Windows Vista Forums

Choppy Playback of Burned DVD

  1. #1


    MSUTech Guest

    Choppy Playback of Burned DVD

    Hello All,

    I have a lot of home movies that, through IEEE 1394, I put on our home
    laptop. PREVIOUSLY I was able to select the setting of 2.1 mbps, for the
    speed of the movie.

    When I burn those 2.1 mbps movies to DVD, from Windows Vista, the dvds look
    great.

    NOW, in Windows Vista, I don't seem to have an option of what speed I want
    to save these movies at, when I am transferring them from my video camera,
    through IEEE 1394 - I think it defaults to 4 mbps.

    MY PROBLEM: If I create a dvd from these new 4 mbps videos, that dvd is very
    choppy and really hard to watch. I tried to use movie maker to drop it to 3
    mbps, then create another dvd, but, the movie is still choppy.

    Can someone help me determine the best way to take my home movies, from my
    camera, and get them to DVD, without being so choppy?

    thanks,

      My System SpecsSystem Spec

  2.   


  3. #2


    Adam Albright Guest

    Re: Choppy Playback of Burned DVD

    On Tue, 24 Jul 2007 07:36:13 -0700, MSUTech
    <MSUTech@discussions.microsoft.com> wrote:

    >Hello All,
    >
    >I have a lot of home movies that, through IEEE 1394, I put on our home
    >laptop. PREVIOUSLY I was able to select the setting of 2.1 mbps, for the
    >speed of the movie.
    >
    >When I burn those 2.1 mbps movies to DVD, from Windows Vista, the dvds look
    >great.
    >
    >NOW, in Windows Vista, I don't seem to have an option of what speed I want
    >to save these movies at, when I am transferring them from my video camera,
    >through IEEE 1394 - I think it defaults to 4 mbps.
    >
    >MY PROBLEM: If I create a dvd from these new 4 mbps videos, that dvd is very
    >choppy and really hard to watch. I tried to use movie maker to drop it to 3
    >mbps, then create another dvd, but, the movie is still choppy.
    >
    >Can someone help me determine the best way to take my home movies, from my
    >camera, and get them to DVD, without being so choppy?
    >
    >thanks,


    Just for your information Mbps has nothing to do with speed, it is the
    overall QUALITY at which the video is encoded at. The higher the
    bitrate the better the quality, however don't get tricked into
    assuming you can take a low bitrate source file and make it "better"
    just by re encoding at a higher bitrate. That don't work.

    Speed for videos is determined by the frame rate which is how many
    frames happen per second of playback. For North America, Japan, a few
    other countries (see map) the expected frame rate for DVD's is 29.970
    frames a second which is based on NTSC specs.

    http://en.wikipedia.org/wiki/NTSC

    For the rest of the world it is PAL specs.

    As far as your question choppy playback can be caused from several
    things. The slower the bitrate the easier it is for the decoder. If
    you try to play back a high bitrate video on a under powered PC your
    computer may have trouble keeping up, thus choppy playback. How does
    the DVD play on a set top DVD player?

    You can also get choppy results if the source file is encoded at a low
    frame rate. For example if you download some video off the web that
    was made on a Web Cam, often they use very low frame rates of 12
    frames or less per second. The trouble here is it doesn't matter what
    the bitrate is, that just sets the quality and has zero impact on
    frame rate. If that's the problem the solution is to increase the
    frame rate.

    Need more information. Brand, model of camera, what frame rate and
    bitrate your source files are, are you using Movie Maker exclusively
    or something else, things like that.


      My System SpecsSystem Spec

  4. #3


    KDE Guest

    Re: Choppy Playback of Burned DVD

    <CLIP>Just for your information Mbps has nothing to do with speed</CLIP>
    But, It has everything to do with the DVD players ability to play back
    smoothly or choppy.

    Lowering the bitrate will decrease the quality, but will increase
    compatibility with standalone DVD players. I burn and distribute 100's of
    homemade DVD's and everytime I burn higher than 4Mbs, I get complaints from
    people about choppy playback.

    you have to determine what tradeoff you are willing to make to get a nice
    quality DVD that most players can play.


    "Adam Albright" <AA@ABC.net> wrote in message
    news:647ca39kibchqn27vmfuopfc75vsudrbpj@4ax.com...
    > On Tue, 24 Jul 2007 07:36:13 -0700, MSUTech
    > <MSUTech@discussions.microsoft.com> wrote:
    >
    >>Hello All,
    >>
    >>I have a lot of home movies that, through IEEE 1394, I put on our home
    >>laptop. PREVIOUSLY I was able to select the setting of 2.1 mbps, for the
    >>speed of the movie.
    >>
    >>When I burn those 2.1 mbps movies to DVD, from Windows Vista, the dvds
    >>look
    >>great.
    >>
    >>NOW, in Windows Vista, I don't seem to have an option of what speed I want
    >>to save these movies at, when I am transferring them from my video camera,
    >>through IEEE 1394 - I think it defaults to 4 mbps.
    >>
    >>MY PROBLEM: If I create a dvd from these new 4 mbps videos, that dvd is
    >>very
    >>choppy and really hard to watch. I tried to use movie maker to drop it to
    >>3
    >>mbps, then create another dvd, but, the movie is still choppy.
    >>
    >>Can someone help me determine the best way to take my home movies, from my
    >>camera, and get them to DVD, without being so choppy?
    >>
    >>thanks,

    >
    > Just for your information Mbps has nothing to do with speed, it is the
    > overall QUALITY at which the video is encoded at. The higher the
    > bitrate the better the quality, however don't get tricked into
    > assuming you can take a low bitrate source file and make it "better"
    > just by re encoding at a higher bitrate. That don't work.
    >
    > Speed for videos is determined by the frame rate which is how many
    > frames happen per second of playback. For North America, Japan, a few
    > other countries (see map) the expected frame rate for DVD's is 29.970
    > frames a second which is based on NTSC specs.
    >
    > http://en.wikipedia.org/wiki/NTSC
    >
    > For the rest of the world it is PAL specs.
    >
    > As far as your question choppy playback can be caused from several
    > things. The slower the bitrate the easier it is for the decoder. If
    > you try to play back a high bitrate video on a under powered PC your
    > computer may have trouble keeping up, thus choppy playback. How does
    > the DVD play on a set top DVD player?
    >
    > You can also get choppy results if the source file is encoded at a low
    > frame rate. For example if you download some video off the web that
    > was made on a Web Cam, often they use very low frame rates of 12
    > frames or less per second. The trouble here is it doesn't matter what
    > the bitrate is, that just sets the quality and has zero impact on
    > frame rate. If that's the problem the solution is to increase the
    > frame rate.
    >
    > Need more information. Brand, model of camera, what frame rate and
    > bitrate your source files are, are you using Movie Maker exclusively
    > or something else, things like that.
    >




      My System SpecsSystem Spec

  5. #4


    Adam Albright Guest

    Re: Choppy Playback of Burned DVD

    On Thu, 26 Jul 2007 16:54:07 -0600, "KDE"
    <knott_me@NOSPAM.hotmail.com> wrote:

    ><CLIP>Just for your information Mbps has nothing to do with speed</CLIP>
    >But, It has everything to do with the DVD players ability to play back
    >smoothly or choppy.
    >
    >Lowering the bitrate will decrease the quality, but will increase
    >compatibility with standalone DVD players. I burn and distribute 100's of
    >homemade DVD's and everytime I burn higher than 4Mbs, I get complaints from
    >people about choppy playback.
    >
    >you have to determine what tradeoff you are willing to make to get a nice
    >quality DVD that most players can play.
    >

    The suggested floor for DVDs is 6000 Mbps for a constant bitrate, can
    be way lower if you use a variable bitrate. If you use 4000 Mbps or
    less the quality isn't close to DVD specs.

    If a DVD player can't handle 6000 Mbps then there is something wrong
    with the DVD player or more likely the player has trouble with the
    brand of DVD media you're using or the format. You're using + or - ?
    Typically the problem most amateurs make is using too a high a
    bitrate, over 8000 Mbps that for sure will freak out a lot of DVD
    players and cause them to play back jerky or choppy.


      My System SpecsSystem Spec

  6. #5


    Leon Guest

    Re: Choppy Playback of Burned DVD

    I have a similar problem!

    see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak" thread.

    Hope we can resolve this before I spend a couple of hundred dollars just to
    get the same prblem on the next software availabel!



    "Adam Albright" wrote:

    > On Thu, 26 Jul 2007 16:54:07 -0600, "KDE"
    > <knott_me@NOSPAM.hotmail.com> wrote:
    >
    > ><CLIP>Just for your information Mbps has nothing to do with speed</CLIP>
    > >But, It has everything to do with the DVD players ability to play back
    > >smoothly or choppy.
    > >
    > >Lowering the bitrate will decrease the quality, but will increase
    > >compatibility with standalone DVD players. I burn and distribute 100's of
    > >homemade DVD's and everytime I burn higher than 4Mbs, I get complaints from
    > >people about choppy playback.
    > >
    > >you have to determine what tradeoff you are willing to make to get a nice
    > >quality DVD that most players can play.
    > >

    > The suggested floor for DVDs is 6000 Mbps for a constant bitrate, can
    > be way lower if you use a variable bitrate. If you use 4000 Mbps or
    > less the quality isn't close to DVD specs.
    >
    > If a DVD player can't handle 6000 Mbps then there is something wrong
    > with the DVD player or more likely the player has trouble with the
    > brand of DVD media you're using or the format. You're using + or - ?
    > Typically the problem most amateurs make is using too a high a
    > bitrate, over 8000 Mbps that for sure will freak out a lot of DVD
    > players and cause them to play back jerky or choppy.
    >
    >


      My System SpecsSystem Spec

  7. #6


    Adam Albright Guest

    Re: Choppy Playback of Burned DVD

    On Sat, 28 Jul 2007 03:22:06 -0700, Leon
    <Leon@discussions.microsoft.com> wrote:

    >I have a similar problem!
    >
    >see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak" thread.
    >
    >Hope we can resolve this before I spend a couple of hundred dollars just to
    >get the same prblem on the next software availabel!


    Editing videos on a computer and making DVDs can be a complex task and
    there are many pitfalls. I've got plenty of bumps and bruises to prove
    it ;-)

    As I've said before I'm using Vista Business which Microsoft didn't
    see fit to include DVD Maker in. So I'm in the dark how good or bad it
    performs. What I can tell you is at the heart of making good videos
    that play as expected when making DVDs is the encoder. MPEG-2 encoders
    which is the source file type DVDs MUST be encoded to prior to doing
    the final DVD burning phase aren't free. They are licensed software.
    Which one Microsoft includes if you have the Home Premium or Ultimate
    version that include DVD Maker I have no idea. Some MPEG-2 encoders
    are simply better, some WAY BETTER than others. I doubt Microsoft
    includes a really good one.

    Lets look deeper. An explanation of a few terms; GOP (Group of
    Pictures) and the three types of frames that make up a video,
    respectively called "I", "P" and "B" frames.

    As most people already know a video is nothing more than a long series
    of still images (frames) played back at a fast enough rate that tricks
    the human eye into seeing motion. Under NTSC specs, a compliant MPEG-2
    video has a frame rate of 29.970 frames per second. That's fast enough
    to get smooth motion.

    A GOP starts with an "I" frame, sometimes referred to as a key frame
    usually followed by a number of "P" and "B" frames. Each GOP is
    analyzed separately. GOPs can be just a single "I" frame or many
    frames combined.

    In "I" frames Spatial Compression removes redundancies within a single
    frame of video. The encoder or the compressor a more accurate term
    looks at each "I" frame separately regardless of the frames preceding
    or following it. The frame is divided into blocks, which are then
    transformed using discrete cosine transformation and get compressed at
    about a 7:1 ratio.

    With "P" frames which stands for Predicted Frames, these follow
    I-Frames. A "P" frame's content and/or color has changed from the
    preceding I-Frame. However since "P" frames only contains data that
    has changed, they can't be displayed on their own needing a preceding
    "I" frame to fill in the sequence's original content.

    Trying to avoid getting too technical, "B" frames are bi-directional
    predicted frames that remove more redundancies by looking at changes
    in frame content or color based on both previous and subsequent frames
    which require "I" frames surrounding by "P" frames. So a typical one
    second of MPEG-2 video would like something like this:

    A GOP: I BB P BB P BB P BB P BB I BB P BB P BB P BB P BB

    Ok, why should you care? How well the MPEG-2 encoder does this dance
    the better the quality of the resulting video.

    Another factor is bitrate. If you encode at a constant bitrate you
    don't get efficient compression and in effect only increase file bloat
    with no increase in video quality.

    Generally "I" frames get compressed about 7:1, while "P" and "B"
    frames can often get easily compressed at 20:1, even higher without
    objectionable loss of quality.

    So, (finally) we answer the question. Why do videos play choppy? If
    the more common reasons already offered in another reply earlier
    aren't to blame, then suspect the encoder.

    Here's why: If nothing much is changing frame to frame then little if
    any prediction is happening, so the encoder isn't guessing what it can
    safely drop as redundancies in preceding frames. However if the action
    in the video starts to get fast and heavy then the bitrate better be
    high enough to handle it. If it isn't then the encoder is forced to
    make more predictions and the quality of "P" and "B" frames will go
    way down since the encoder isn't making good decisions and may drops
    needed detail, hence choppy playback can be the result because your
    eyes are starting to detect noticeable changes frame to frame.

    So the bottom line is better encoders do a better job of encoding and
    not only can you control the dance better, but you control what
    bitrate and even can use two pass encoding and other things. Again, I
    don't have Microsoft's DVD Maker so I don't know if it is capable of
    offering good control or changes in what bitrate you get to use or
    not.


      My System SpecsSystem Spec

  8. #7


    Leon Guest

    Re: Choppy Playback of Burned DVD

    That all sounds OK.... but, why is the quality all 100% if I do not edit the
    video and encode the complete 1hr and burn to DVD?

    The problem only occurs when I use Windows Moviemaker to edit. The project
    is saved as a .MSWMM file.

    So I think the frame rate is lost between the Moviemaker and the DVD Maker,
    and that the DVD Maker is OK, as it does encode good quality unedited videos.

    Any ideas?


    "Adam Albright" wrote:

    > On Sat, 28 Jul 2007 03:22:06 -0700, Leon
    > <Leon@discussions.microsoft.com> wrote:
    >
    > >I have a similar problem!
    > >
    > >see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak" thread.
    > >
    > >Hope we can resolve this before I spend a couple of hundred dollars just to
    > >get the same prblem on the next software availabel!

    >
    > Editing videos on a computer and making DVDs can be a complex task and
    > there are many pitfalls. I've got plenty of bumps and bruises to prove
    > it ;-)
    >
    > As I've said before I'm using Vista Business which Microsoft didn't
    > see fit to include DVD Maker in. So I'm in the dark how good or bad it
    > performs. What I can tell you is at the heart of making good videos
    > that play as expected when making DVDs is the encoder. MPEG-2 encoders
    > which is the source file type DVDs MUST be encoded to prior to doing
    > the final DVD burning phase aren't free. They are licensed software.
    > Which one Microsoft includes if you have the Home Premium or Ultimate
    > version that include DVD Maker I have no idea. Some MPEG-2 encoders
    > are simply better, some WAY BETTER than others. I doubt Microsoft
    > includes a really good one.
    >
    > Lets look deeper. An explanation of a few terms; GOP (Group of
    > Pictures) and the three types of frames that make up a video,
    > respectively called "I", "P" and "B" frames.
    >
    > As most people already know a video is nothing more than a long series
    > of still images (frames) played back at a fast enough rate that tricks
    > the human eye into seeing motion. Under NTSC specs, a compliant MPEG-2
    > video has a frame rate of 29.970 frames per second. That's fast enough
    > to get smooth motion.
    >
    > A GOP starts with an "I" frame, sometimes referred to as a key frame
    > usually followed by a number of "P" and "B" frames. Each GOP is
    > analyzed separately. GOPs can be just a single "I" frame or many
    > frames combined.
    >
    > In "I" frames Spatial Compression removes redundancies within a single
    > frame of video. The encoder or the compressor a more accurate term
    > looks at each "I" frame separately regardless of the frames preceding
    > or following it. The frame is divided into blocks, which are then
    > transformed using discrete cosine transformation and get compressed at
    > about a 7:1 ratio.
    >
    > With "P" frames which stands for Predicted Frames, these follow
    > I-Frames. A "P" frame's content and/or color has changed from the
    > preceding I-Frame. However since "P" frames only contains data that
    > has changed, they can't be displayed on their own needing a preceding
    > "I" frame to fill in the sequence's original content.
    >
    > Trying to avoid getting too technical, "B" frames are bi-directional
    > predicted frames that remove more redundancies by looking at changes
    > in frame content or color based on both previous and subsequent frames
    > which require "I" frames surrounding by "P" frames. So a typical one
    > second of MPEG-2 video would like something like this:
    >
    > A GOP: I BB P BB P BB P BB P BB I BB P BB P BB P BB P BB
    >
    > Ok, why should you care? How well the MPEG-2 encoder does this dance
    > the better the quality of the resulting video.
    >
    > Another factor is bitrate. If you encode at a constant bitrate you
    > don't get efficient compression and in effect only increase file bloat
    > with no increase in video quality.
    >
    > Generally "I" frames get compressed about 7:1, while "P" and "B"
    > frames can often get easily compressed at 20:1, even higher without
    > objectionable loss of quality.
    >
    > So, (finally) we answer the question. Why do videos play choppy? If
    > the more common reasons already offered in another reply earlier
    > aren't to blame, then suspect the encoder.
    >
    > Here's why: If nothing much is changing frame to frame then little if
    > any prediction is happening, so the encoder isn't guessing what it can
    > safely drop as redundancies in preceding frames. However if the action
    > in the video starts to get fast and heavy then the bitrate better be
    > high enough to handle it. If it isn't then the encoder is forced to
    > make more predictions and the quality of "P" and "B" frames will go
    > way down since the encoder isn't making good decisions and may drops
    > needed detail, hence choppy playback can be the result because your
    > eyes are starting to detect noticeable changes frame to frame.
    >
    > So the bottom line is better encoders do a better job of encoding and
    > not only can you control the dance better, but you control what
    > bitrate and even can use two pass encoding and other things. Again, I
    > don't have Microsoft's DVD Maker so I don't know if it is capable of
    > offering good control or changes in what bitrate you get to use or
    > not.
    >
    >


      My System SpecsSystem Spec

  9. #8


    John Lee Brown Guest

    Re: Choppy Playback of Burned DVD

    What antivirus software are you running. I have discovered that it can
    easily interfere with video editing so I shut it off during editing, also
    while the computer is doing the edit you cannot do anything else.

    "Leon" <Leon@discussions.microsoft.com> wrote in message
    news:99A0CE20-C53E-4220-913C-AA935FC1C858@microsoft.com...
    > That all sounds OK.... but, why is the quality all 100% if I do not edit
    > the
    > video and encode the complete 1hr and burn to DVD?
    >
    > The problem only occurs when I use Windows Moviemaker to edit. The project
    > is saved as a .MSWMM file.
    >
    > So I think the frame rate is lost between the Moviemaker and the DVD
    > Maker,
    > and that the DVD Maker is OK, as it does encode good quality unedited
    > videos.
    >
    > Any ideas?
    >
    >
    > "Adam Albright" wrote:
    >
    >> On Sat, 28 Jul 2007 03:22:06 -0700, Leon
    >> <Leon@discussions.microsoft.com> wrote:
    >>
    >> >I have a similar problem!
    >> >
    >> >see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak"
    >> >thread.
    >> >
    >> >Hope we can resolve this before I spend a couple of hundred dollars just
    >> >to
    >> >get the same prblem on the next software availabel!

    >>
    >> Editing videos on a computer and making DVDs can be a complex task and
    >> there are many pitfalls. I've got plenty of bumps and bruises to prove
    >> it ;-)
    >>
    >> As I've said before I'm using Vista Business which Microsoft didn't
    >> see fit to include DVD Maker in. So I'm in the dark how good or bad it
    >> performs. What I can tell you is at the heart of making good videos
    >> that play as expected when making DVDs is the encoder. MPEG-2 encoders
    >> which is the source file type DVDs MUST be encoded to prior to doing
    >> the final DVD burning phase aren't free. They are licensed software.
    >> Which one Microsoft includes if you have the Home Premium or Ultimate
    >> version that include DVD Maker I have no idea. Some MPEG-2 encoders
    >> are simply better, some WAY BETTER than others. I doubt Microsoft
    >> includes a really good one.
    >>
    >> Lets look deeper. An explanation of a few terms; GOP (Group of
    >> Pictures) and the three types of frames that make up a video,
    >> respectively called "I", "P" and "B" frames.
    >>
    >> As most people already know a video is nothing more than a long series
    >> of still images (frames) played back at a fast enough rate that tricks
    >> the human eye into seeing motion. Under NTSC specs, a compliant MPEG-2
    >> video has a frame rate of 29.970 frames per second. That's fast enough
    >> to get smooth motion.
    >>
    >> A GOP starts with an "I" frame, sometimes referred to as a key frame
    >> usually followed by a number of "P" and "B" frames. Each GOP is
    >> analyzed separately. GOPs can be just a single "I" frame or many
    >> frames combined.
    >>
    >> In "I" frames Spatial Compression removes redundancies within a single
    >> frame of video. The encoder or the compressor a more accurate term
    >> looks at each "I" frame separately regardless of the frames preceding
    >> or following it. The frame is divided into blocks, which are then
    >> transformed using discrete cosine transformation and get compressed at
    >> about a 7:1 ratio.
    >>
    >> With "P" frames which stands for Predicted Frames, these follow
    >> I-Frames. A "P" frame's content and/or color has changed from the
    >> preceding I-Frame. However since "P" frames only contains data that
    >> has changed, they can't be displayed on their own needing a preceding
    >> "I" frame to fill in the sequence's original content.
    >>
    >> Trying to avoid getting too technical, "B" frames are bi-directional
    >> predicted frames that remove more redundancies by looking at changes
    >> in frame content or color based on both previous and subsequent frames
    >> which require "I" frames surrounding by "P" frames. So a typical one
    >> second of MPEG-2 video would like something like this:
    >>
    >> A GOP: I BB P BB P BB P BB P BB I BB P BB P BB P BB P BB
    >>
    >> Ok, why should you care? How well the MPEG-2 encoder does this dance
    >> the better the quality of the resulting video.
    >>
    >> Another factor is bitrate. If you encode at a constant bitrate you
    >> don't get efficient compression and in effect only increase file bloat
    >> with no increase in video quality.
    >>
    >> Generally "I" frames get compressed about 7:1, while "P" and "B"
    >> frames can often get easily compressed at 20:1, even higher without
    >> objectionable loss of quality.
    >>
    >> So, (finally) we answer the question. Why do videos play choppy? If
    >> the more common reasons already offered in another reply earlier
    >> aren't to blame, then suspect the encoder.
    >>
    >> Here's why: If nothing much is changing frame to frame then little if
    >> any prediction is happening, so the encoder isn't guessing what it can
    >> safely drop as redundancies in preceding frames. However if the action
    >> in the video starts to get fast and heavy then the bitrate better be
    >> high enough to handle it. If it isn't then the encoder is forced to
    >> make more predictions and the quality of "P" and "B" frames will go
    >> way down since the encoder isn't making good decisions and may drops
    >> needed detail, hence choppy playback can be the result because your
    >> eyes are starting to detect noticeable changes frame to frame.
    >>
    >> So the bottom line is better encoders do a better job of encoding and
    >> not only can you control the dance better, but you control what
    >> bitrate and even can use two pass encoding and other things. Again, I
    >> don't have Microsoft's DVD Maker so I don't know if it is capable of
    >> offering good control or changes in what bitrate you get to use or
    >> not.
    >>
    >>



      My System SpecsSystem Spec

  10. #9


    Leon Guest

    Re: Choppy Playback of Burned DVD

    Hi,

    I use McAfee.

    I do not run any other applications while the DVD is encoded. I have a Intel
    Dual Core 6600 (2x2.4GHz) pc with 2GB RAM. So I think that should be enough

    What I do not understand that in one instance it is working great, but not
    if I edited the movie.


    "John Lee Brown" wrote:

    > What antivirus software are you running. I have discovered that it can
    > easily interfere with video editing so I shut it off during editing, also
    > while the computer is doing the edit you cannot do anything else.
    >
    > "Leon" <Leon@discussions.microsoft.com> wrote in message
    > news:99A0CE20-C53E-4220-913C-AA935FC1C858@microsoft.com...
    > > That all sounds OK.... but, why is the quality all 100% if I do not edit
    > > the
    > > video and encode the complete 1hr and burn to DVD?
    > >
    > > The problem only occurs when I use Windows Moviemaker to edit. The project
    > > is saved as a .MSWMM file.
    > >
    > > So I think the frame rate is lost between the Moviemaker and the DVD
    > > Maker,
    > > and that the DVD Maker is OK, as it does encode good quality unedited
    > > videos.
    > >
    > > Any ideas?
    > >
    > >
    > > "Adam Albright" wrote:
    > >
    > >> On Sat, 28 Jul 2007 03:22:06 -0700, Leon
    > >> <Leon@discussions.microsoft.com> wrote:
    > >>
    > >> >I have a similar problem!
    > >> >
    > >> >see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak"
    > >> >thread.
    > >> >
    > >> >Hope we can resolve this before I spend a couple of hundred dollars just
    > >> >to
    > >> >get the same prblem on the next software availabel!
    > >>
    > >> Editing videos on a computer and making DVDs can be a complex task and
    > >> there are many pitfalls. I've got plenty of bumps and bruises to prove
    > >> it ;-)
    > >>
    > >> As I've said before I'm using Vista Business which Microsoft didn't
    > >> see fit to include DVD Maker in. So I'm in the dark how good or bad it
    > >> performs. What I can tell you is at the heart of making good videos
    > >> that play as expected when making DVDs is the encoder. MPEG-2 encoders
    > >> which is the source file type DVDs MUST be encoded to prior to doing
    > >> the final DVD burning phase aren't free. They are licensed software.
    > >> Which one Microsoft includes if you have the Home Premium or Ultimate
    > >> version that include DVD Maker I have no idea. Some MPEG-2 encoders
    > >> are simply better, some WAY BETTER than others. I doubt Microsoft
    > >> includes a really good one.
    > >>
    > >> Lets look deeper. An explanation of a few terms; GOP (Group of
    > >> Pictures) and the three types of frames that make up a video,
    > >> respectively called "I", "P" and "B" frames.
    > >>
    > >> As most people already know a video is nothing more than a long series
    > >> of still images (frames) played back at a fast enough rate that tricks
    > >> the human eye into seeing motion. Under NTSC specs, a compliant MPEG-2
    > >> video has a frame rate of 29.970 frames per second. That's fast enough
    > >> to get smooth motion.
    > >>
    > >> A GOP starts with an "I" frame, sometimes referred to as a key frame
    > >> usually followed by a number of "P" and "B" frames. Each GOP is
    > >> analyzed separately. GOPs can be just a single "I" frame or many
    > >> frames combined.
    > >>
    > >> In "I" frames Spatial Compression removes redundancies within a single
    > >> frame of video. The encoder or the compressor a more accurate term
    > >> looks at each "I" frame separately regardless of the frames preceding
    > >> or following it. The frame is divided into blocks, which are then
    > >> transformed using discrete cosine transformation and get compressed at
    > >> about a 7:1 ratio.
    > >>
    > >> With "P" frames which stands for Predicted Frames, these follow
    > >> I-Frames. A "P" frame's content and/or color has changed from the
    > >> preceding I-Frame. However since "P" frames only contains data that
    > >> has changed, they can't be displayed on their own needing a preceding
    > >> "I" frame to fill in the sequence's original content.
    > >>
    > >> Trying to avoid getting too technical, "B" frames are bi-directional
    > >> predicted frames that remove more redundancies by looking at changes
    > >> in frame content or color based on both previous and subsequent frames
    > >> which require "I" frames surrounding by "P" frames. So a typical one
    > >> second of MPEG-2 video would like something like this:
    > >>
    > >> A GOP: I BB P BB P BB P BB P BB I BB P BB P BB P BB P BB
    > >>
    > >> Ok, why should you care? How well the MPEG-2 encoder does this dance
    > >> the better the quality of the resulting video.
    > >>
    > >> Another factor is bitrate. If you encode at a constant bitrate you
    > >> don't get efficient compression and in effect only increase file bloat
    > >> with no increase in video quality.
    > >>
    > >> Generally "I" frames get compressed about 7:1, while "P" and "B"
    > >> frames can often get easily compressed at 20:1, even higher without
    > >> objectionable loss of quality.
    > >>
    > >> So, (finally) we answer the question. Why do videos play choppy? If
    > >> the more common reasons already offered in another reply earlier
    > >> aren't to blame, then suspect the encoder.
    > >>
    > >> Here's why: If nothing much is changing frame to frame then little if
    > >> any prediction is happening, so the encoder isn't guessing what it can
    > >> safely drop as redundancies in preceding frames. However if the action
    > >> in the video starts to get fast and heavy then the bitrate better be
    > >> high enough to handle it. If it isn't then the encoder is forced to
    > >> make more predictions and the quality of "P" and "B" frames will go
    > >> way down since the encoder isn't making good decisions and may drops
    > >> needed detail, hence choppy playback can be the result because your
    > >> eyes are starting to detect noticeable changes frame to frame.
    > >>
    > >> So the bottom line is better encoders do a better job of encoding and
    > >> not only can you control the dance better, but you control what
    > >> bitrate and even can use two pass encoding and other things. Again, I
    > >> don't have Microsoft's DVD Maker so I don't know if it is capable of
    > >> offering good control or changes in what bitrate you get to use or
    > >> not.
    > >>
    > >>

    >
    >


      My System SpecsSystem Spec

  11. #10


    John Lee Brown Guest

    Re: Choppy Playback of Burned DVD

    When you edit you are converting the video but when you are going straight
    to DVD you are not always converting the video. It is during that conversion
    that choppiness and video/voice out of sync happen.
    "Leon" <Leon@discussions.microsoft.com> wrote in message
    news:4A8C8645-0674-4345-899B-CEEDAAD0557C@microsoft.com...
    > Hi,
    >
    > I use McAfee.
    >
    > I do not run any other applications while the DVD is encoded. I have a
    > Intel
    > Dual Core 6600 (2x2.4GHz) pc with 2GB RAM. So I think that should be
    > enough
    >
    > What I do not understand that in one instance it is working great, but not
    > if I edited the movie.
    >
    >
    > "John Lee Brown" wrote:
    >
    >> What antivirus software are you running. I have discovered that it can
    >> easily interfere with video editing so I shut it off during editing, also
    >> while the computer is doing the edit you cannot do anything else.
    >>
    >> "Leon" <Leon@discussions.microsoft.com> wrote in message
    >> news:99A0CE20-C53E-4220-913C-AA935FC1C858@microsoft.com...
    >> > That all sounds OK.... but, why is the quality all 100% if I do not
    >> > edit
    >> > the
    >> > video and encode the complete 1hr and burn to DVD?
    >> >
    >> > The problem only occurs when I use Windows Moviemaker to edit. The
    >> > project
    >> > is saved as a .MSWMM file.
    >> >
    >> > So I think the frame rate is lost between the Moviemaker and the DVD
    >> > Maker,
    >> > and that the DVD Maker is OK, as it does encode good quality unedited
    >> > videos.
    >> >
    >> > Any ideas?
    >> >
    >> >
    >> > "Adam Albright" wrote:
    >> >
    >> >> On Sat, 28 Jul 2007 03:22:06 -0700, Leon
    >> >> <Leon@discussions.microsoft.com> wrote:
    >> >>
    >> >> >I have a similar problem!
    >> >> >
    >> >> >see "Frame rate quality loss using Windows Vista Ulitmate Movie Mak"
    >> >> >thread.
    >> >> >
    >> >> >Hope we can resolve this before I spend a couple of hundred dollars
    >> >> >just
    >> >> >to
    >> >> >get the same prblem on the next software availabel!
    >> >>
    >> >> Editing videos on a computer and making DVDs can be a complex task and
    >> >> there are many pitfalls. I've got plenty of bumps and bruises to prove
    >> >> it ;-)
    >> >>
    >> >> As I've said before I'm using Vista Business which Microsoft didn't
    >> >> see fit to include DVD Maker in. So I'm in the dark how good or bad it
    >> >> performs. What I can tell you is at the heart of making good videos
    >> >> that play as expected when making DVDs is the encoder. MPEG-2 encoders
    >> >> which is the source file type DVDs MUST be encoded to prior to doing
    >> >> the final DVD burning phase aren't free. They are licensed software.
    >> >> Which one Microsoft includes if you have the Home Premium or Ultimate
    >> >> version that include DVD Maker I have no idea. Some MPEG-2 encoders
    >> >> are simply better, some WAY BETTER than others. I doubt Microsoft
    >> >> includes a really good one.
    >> >>
    >> >> Lets look deeper. An explanation of a few terms; GOP (Group of
    >> >> Pictures) and the three types of frames that make up a video,
    >> >> respectively called "I", "P" and "B" frames.
    >> >>
    >> >> As most people already know a video is nothing more than a long series
    >> >> of still images (frames) played back at a fast enough rate that tricks
    >> >> the human eye into seeing motion. Under NTSC specs, a compliant MPEG-2
    >> >> video has a frame rate of 29.970 frames per second. That's fast enough
    >> >> to get smooth motion.
    >> >>
    >> >> A GOP starts with an "I" frame, sometimes referred to as a key frame
    >> >> usually followed by a number of "P" and "B" frames. Each GOP is
    >> >> analyzed separately. GOPs can be just a single "I" frame or many
    >> >> frames combined.
    >> >>
    >> >> In "I" frames Spatial Compression removes redundancies within a single
    >> >> frame of video. The encoder or the compressor a more accurate term
    >> >> looks at each "I" frame separately regardless of the frames preceding
    >> >> or following it. The frame is divided into blocks, which are then
    >> >> transformed using discrete cosine transformation and get compressed at
    >> >> about a 7:1 ratio.
    >> >>
    >> >> With "P" frames which stands for Predicted Frames, these follow
    >> >> I-Frames. A "P" frame's content and/or color has changed from the
    >> >> preceding I-Frame. However since "P" frames only contains data that
    >> >> has changed, they can't be displayed on their own needing a preceding
    >> >> "I" frame to fill in the sequence's original content.
    >> >>
    >> >> Trying to avoid getting too technical, "B" frames are bi-directional
    >> >> predicted frames that remove more redundancies by looking at changes
    >> >> in frame content or color based on both previous and subsequent frames
    >> >> which require "I" frames surrounding by "P" frames. So a typical one
    >> >> second of MPEG-2 video would like something like this:
    >> >>
    >> >> A GOP: I BB P BB P BB P BB P BB I BB P BB P BB P BB P BB
    >> >>
    >> >> Ok, why should you care? How well the MPEG-2 encoder does this dance
    >> >> the better the quality of the resulting video.
    >> >>
    >> >> Another factor is bitrate. If you encode at a constant bitrate you
    >> >> don't get efficient compression and in effect only increase file bloat
    >> >> with no increase in video quality.
    >> >>
    >> >> Generally "I" frames get compressed about 7:1, while "P" and "B"
    >> >> frames can often get easily compressed at 20:1, even higher without
    >> >> objectionable loss of quality.
    >> >>
    >> >> So, (finally) we answer the question. Why do videos play choppy? If
    >> >> the more common reasons already offered in another reply earlier
    >> >> aren't to blame, then suspect the encoder.
    >> >>
    >> >> Here's why: If nothing much is changing frame to frame then little if
    >> >> any prediction is happening, so the encoder isn't guessing what it can
    >> >> safely drop as redundancies in preceding frames. However if the action
    >> >> in the video starts to get fast and heavy then the bitrate better be
    >> >> high enough to handle it. If it isn't then the encoder is forced to
    >> >> make more predictions and the quality of "P" and "B" frames will go
    >> >> way down since the encoder isn't making good decisions and may drops
    >> >> needed detail, hence choppy playback can be the result because your
    >> >> eyes are starting to detect noticeable changes frame to frame.
    >> >>
    >> >> So the bottom line is better encoders do a better job of encoding and
    >> >> not only can you control the dance better, but you control what
    >> >> bitrate and even can use two pass encoding and other things. Again, I
    >> >> don't have Microsoft's DVD Maker so I don't know if it is capable of
    >> >> offering good control or changes in what bitrate you get to use or
    >> >> not.
    >> >>
    >> >>

    >>
    >>



      My System SpecsSystem Spec

Page 1 of 2 12 LastLast

Choppy Playback of Burned DVD
Similar Threads
Thread Forum
dvd playback choppy in media center Software
Trouble with playback of Burned DVD Vista music pictures video
playback burned videos Vista music pictures video
Choppy DVD Playback Vista music pictures video
MiniDV to DVD: Choppy video playback? Vista music pictures video