TMPGEnc bitrate hell...

Discussion in 'Amateur Video Production' started by No Such Luck, Jul 9, 2004.

  1. No Such Luck

    No Such Luck Guest

    Hi All:

    I am trying to convert a 120 minute DVD into a single VCD, but am
    having a major problem. I've checked videohelp.com, various FAQs and
    past Usenet posts for information regarding my problem, but have had
    no luck. Here is the procedure I am using:

    1) Use DVD Decrypter to rip the DVD onto the hard drive in VOB format.
    2) Use DVD2AVI to rip the audio stream in WAV format from the VOB
    files and create a d2v project file.
    3) Use TMPGEnc to read the d2v project file, the WAV audio, and create
    mpeg 1 files with a bitrate allowing 120 minutes to fit on 1 CD-R 74
    min (650 MB)
    4) Use Nero to create the menu and burn the VCD.

    I have calculated that for 120 minutes to fit on 1 CD-R (650 MB), the
    average (or constant) bitrate for the MPEG 1 files needs to be < 740
    kbs. (i.e., I am using bitrates of 128 audio + 600 video)

    The problem I am having is that no matter what audio and video
    bitrates I manually set in TMPGEnc, the resulting MPEG 1 files from
    the VOB files always have the bitrate of 1374 kbs (1150 video
    (default) + 224 audio (default). What's the point of hardcoding
    constant audio and video bitrates if TMPGENc is simply going to ingore
    them?

    I guess my questions are:

    1) I thought that a VCD could be authored with any amount of video
    time on it, as the bitrate was used to dictate how much video could be
    put on. Is it possible to create a VCD on a 650 MB CD-R with more than
    70-74 minutes of video (1374 kbs bitrate)?

    2) What do I need to do in TMPGENc to enable it to encode an aribrary
    d2v project based on my EXACT bitrate specifications?

    Thanks in advance for any help.
     
    No Such Luck, Jul 9, 2004
    #1
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  2. No Such Luck

    Biz Guest

    Yes, but it isnt a VCD since VCD has CBR audio and video and set bitrates.
    You can call it kvcd, or xvcd that tells you its out of spec.
    Why not just let dvd2svcd do it for you in vcd mode?

    It will use Canopus, Tmpegenc, or CCE depnding on your config, and will
    allow for non-standard settings for most anything.
     
    Biz, Jul 9, 2004
    #2
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  3. No Such Luck

    Adam H Guest

    That is probably because you have "Stream Type" set to "MPEG-1 Video CD"
    under the System tab. I think it will automatically pad the video. Use one
    of the 3 other MPEG1 presets. I forget which one would be the correct one,
    but try it on a small sample to find out. I think "MPEG-1 System
    (Automatic)" should do the trick
     
    Adam H, Jul 10, 2004
    #3
  4. No Such Luck

    No Such Luck Guest

    Thanks for this info. Does this mean that I should strictly stick to
    the VCD standard (1150/224), otherwise my xvcd or kvcd will not be
    recognized by most, if not all, stand alone DVD players?
    I tried all afternoon and some of the evening to get dvd2svcd to work
    for me. Even after installing CCE, dvd2svcd didn't recognize it on my
    system. When dvd2svcd used TMPGEnc to do the encoding, no audio was
    present in the result. With all the problems I'm having with TMPGEnc
    on my system anyway, it's not really a surprise to me that dvd2svcd
    didn't have much luck with it either.

    Thanks again for the help...
     
    No Such Luck, Jul 10, 2004
    #4
  5. No Such Luck

    No Such Luck Guest

    Thanks. This did the trick. I was able to create all my MPG-1 files to
    total < 650 MB based on your suggestion. However, when I added them to
    a VCD project in Nero, Nero reprocesses them to a much larger size.
    I've heard that you can burn 740 MB onto a 650 MB VCD but Nero made
    the files much larger than 800 MB. It looks like Nero won't create a
    "xvcd" or "kvcd", only standard VCDs based on the 1150/224
    specification.
     
    No Such Luck, Jul 10, 2004
    #5
  6. No Such Luck

    Adam H Guest

    That is probably because you have "Stream Type" set to "MPEG-1 Video CD"
    Nero is perfectly happy to burn a KVCD without re-encoding. I don't have a
    copy of Nero installed at the moment, so I can't give you the specifics on
    how to do it, but it's definitely possible. Check your optioms. There must
    be some compliance or re-encoding parameters you can disable.

    You can fit about 800mb on a 700mb/80min CD.
     
    Adam H, Jul 10, 2004
    #6
  7. No Such Luck

    Bariloche Guest

    Point 1: ¿how do you know the bitrates attained by the Tmpgenc
    encoding?

    Point 2: there's no reason why Tmpgenc should not obey.

    But first, I would like to know about point 1 before proceeding on to
    point 2.
     
    Bariloche, Jul 10, 2004
    #7
  8. No Such Luck

    Bariloche Guest

    When you add a non-standard mpeg file to the compilation, Nero
    complains. Just tell it is allright, and that it should make a
    non-standard Vcd.

    Wether it is going to work on the desktop DVD player, is another thing
    altogether...
     
    Bariloche, Jul 10, 2004
    #8
  9. In Nero, when you choose "Video CD" and try to add your video, you
    should get a popup that says you have problems, and it asks you "how
    do you want to continue?" Click on "Turn Off Standard Compliance and
    Continue."

    P. K. Kid
    Non-commercial stereoscopic 3D video:
    (All G-Rated) http://www.puppetkites.net
     
    The Puppet Kite Kid, Jul 10, 2004
    #9
  10. No Such Luck

    Adam H Guest

    When you add a non-standard mpeg file to the compilation, Nero
    That's true. Most DVD players should be able to handle it, though. It's
    usually non-standard resolutions and high bitrates that will cause problems.
    Low bitrates are usually not a problem..
     
    Adam H, Jul 10, 2004
    #10
  11. No Such Luck

    John Doe Guest

    I have done about 100 KVCD VCD's and haven't had a single problem with my
    Panasonic DVD player reading. I use TMPGEnc and Nero. I am guessing that
    unless one has an off brand or really cheap DVD player or an old one that
    you shouldn't have any problems with them reading such a disc.

    John
     
    John Doe, Jul 10, 2004
    #11

  12. The new Tmpgenc, 3.0 I think, is pretty amazing, you just tell it what
    output size you want and dump as many files into the mix as you want and
    at the end it's all ready to be burned, I'm not sure how functional the
    demo is but you should download it ad check it out.
     
    Chris Phillipo, Jul 12, 2004
    #12
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