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  1. yeah i do not need to make it for dvd. Tivo accepts anything as long as it is mpeg2 format
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  2. Member FulciLives's Avatar
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    Originally Posted by jagabo
    Originally Posted by FulciLives
    Since MPEG-4 uses square pixels (and you are encoding it that way if you use autoGK) then you can't use the exact same square pixel MPEG-4 resolution when you go back to MPEG-2 for TV viewing as that will give you an aspect ratio error!

    So if the MPEG-4 is 640x380 then you need to encode it as 704x380 (with black padding around that to make it 720x480 total) and if you don't do that then you will not get a proper aspect ratio.
    Maybe he's not converting to MPEG2 for DVD. In his first post he said he was using his Tivo to play the MPEG2 files.
    Well yes he said TIVO but wouldn't TIVO use the same DAR as DVD MPEG-2 which is not 1:1 square pixels?

    - John "FulciLives" Coleman
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  3. I believe the Tivo can use a wide variety of MPEG frame sizes and DARs. I know my DVD player, which can play MPEG files on ISO data disks, can.
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  4. Member FulciLives's Avatar
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    Well now I am really confused LOL

    How can TIVO know how to properly display the MPEG-2 file? Like how does it determine the DAR and therefore how to display with the correct aspect ratio?

    How does your DVD player do it as well?

    I'm confused LOL

    - John "FulciLives" Coleman
    "The eyes are the first thing that you have to destroy ... because they have seen too many bad things" - Lucio Fulci
    EXPLORE THE FILMS OF LUCIO FULCI - THE MAESTRO OF GORE
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  5. i checked the mpeg files and they keep whatever res the xvid format is.

    Since i can do any resolution, does anyone have any suggestions on what to use. As i said in my earlier posts.
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    You have DVDs and you are converting them to Xvid to store on your computer, then when you want to watch them you convert them back to MPEG2.

    Why not store them on the original DVDs and when you want to watch them just play the disk??? Isn't that the whole idea with DVDs...
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  7. Since i can do any resolution, does anyone have any suggestions on what to use. As i said in my earlier posts.

    Same as the original DVD, 720x480 (if for NTSC, 720x576 if PAL). That way, neither converting to AVI nor converting back to MPEG requires a resize. This assumes the DAR is honored upon playback of the MPEG later on. It builds on FulciLives' befuddlement.
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  8. Originally Posted by chris98007
    Since i can do any resolution, does anyone have any suggestions on what to use.
    This is a very subjective area. It will depend on what you find acceptable, the size and quality of the TV you're watching on, even how well the Tivo handles different resolutions. I would say that image clarity on an analog TV isn't effected too badly down to about 480xwhatever.
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    Originally Posted by FulciLives
    Well now I am really confused LOL
    How can TIVO know how to properly display the MPEG-2 file? Like how does it determine the DAR and therefore how to display with the correct aspect ratio?
    ---------
    - John "FulciLives" Coleman
    My TiVo records 480x480, 352x480 and 352x240 with mp2 audio, but it will play back 720x480 with AC3 audio transfered over the network from my PC just fine, and the aspect ratio stays what it always was (4:3). There is a setting for 4:3 or 16:9 on the Tivo. Now if the source for the 720x480 was 16:9 .... ???
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  10. The MPEG file contains the display aspect ratio information.
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    Personally I think much of the difficulties in getting compressed video to work on Stand alone DVD players, like the two Philips and one Lite-on I have is doing anything with Xvid instead of going to the source and just staying with Divx. It makes life so much easier.
    • *First think is converting a DVD formatted video, one can use the open source Dr. Divx from DivxLabs and it is done in one step. It will work perfectly on all stand alone Divx compliant DVD players.
    • *In getting a xvid that is using a VBR audio format, Vdub is great. Just like it has been said, just take the audio, put on Full, then Save Wav on the menu.
    • * With the .wav file, that opens the door to lots of conversion. But in the case of wanting the xvid to play, the most compatible audio format is MP3 CBR. I have the free LAME encoder and I will
      compress the .wav to a MP3 CBR format of my choice.
    • * When inputting the video to Vdub, I will select File Information or look at the video in GSPOT
      first. I look at what the original VBR audio was before and select a LAME MP3 CBR choice
      that is the closest to the original. If the original was at 4800, then I select a 4800 MP3 CBR.
      If I see that the average VBR was something like 158 etc, I would select MP3 CBR 164.
    • * The part in the instructions that I do not understand is the purpose of AutoGK at all ?? It appears to
      me that it is only adding potential complexity. Why not just input the video into Vdub in the
      first place and stay there for the entire encoding change ?
    • * What also is great about Vdub is that if the Xvid video is a non-compliant VBR audio format
      you are told that immediately and don't have to waste some time, in AutoGK to find out that the
      new audio does not synch to the video.
    • * I just go into Vdub and select the Fast Compress, then Divx 6.4, then go from there. I try to have the video part be as close to the original resolution and then go for it in Divx. I find Divx 6.4
      greatly improved for quality and core options. Sometimes I do the 2 pass thing and there is a
      new option in Divs to make the first pass very fast, or do a one pass if I feel like it. It depends
      on the video itself. I will use the File Information or Gspot information to help guide me
      in what I put down as the bitrate of the new Divx video.
    • * The usual rule is that the more encoding you do, the more that is lost. In the case of converting Xvid to Divx 6.4, the result is always superior in Divx when I compare on my PC. Also, there isn't concern about having a incompatible compressed video file with any stand alone DVD Player that supports the compressed MPEG4 formats.
    • * For those who might have given up. Make life easier for yourself and stay out of AutoGK and
      use Vdub and Divx.
    • * If there is some faster, easier way, please let me know.
    • * Another option, that has been available, although increases the size by about double is
      a original Xvid is that I have taken the file into my MPEG encoder, Main Concept.
      Main Concept will handle the situation if the audio coming in a VBR or about whatever type
      it is. Then I can make a MPEG II file or really whatever Main Central thinks. The output takes only
      about an hour and the output is very good. That also is a way to make a Xvid file
      compatible for playing on ANY stand alone DVD Player.
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  12. Originally Posted by jolo
    Personally I think much of the difficulties in getting compressed video to work on Stand alone DVD players, like the two Philips and one Lite-on I have is doing anything with Xvid instead of going to the source and just staying with Divx.
    Divx and Xvid are pretty much the same. Both have settings that can screw up set-top players: GMC, QPEL, too high a bitrate, too large a frames size, b frames, etc. Using Divx is no guarantee of compatability.
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