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Thread: Recompression

  1. #1
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    Recompression

    For those of you that recompress your video.

    What do you use - and how do you find it?

    And does it then play OK through GBPVR?

    I used to be a TMPEGenc mpeg2 man but I am finding audio out of sync problems with high data rate digital broadcast.
    Core2-E2180, 1G RAM, 1Gb-5450 Silent, 2Tb +300g HDDs.
    Three tuners: Twinhan DVB-T x 1, Hauppauge Nova 500T (dual)

    DTB Digital SD + HD content (PAL-MPEG2-AC3).
    Custom case made very quiet. Zalman CPU cooler.
    Sits in rack with other HiFi.

    ParaLED to show tuner activity.

    Display: 42" 1920x1080p Panasonic Plasma

    1x wired MVP
    1x PC client


  2. #2
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    virtualdub is an excellent free app for avi, if you're not married to mpeg

  3. #3
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    What sort of size (gig) per hour do find gives acceptable quality?
    Core2-E2180, 1G RAM, 1Gb-5450 Silent, 2Tb +300g HDDs.
    Three tuners: Twinhan DVB-T x 1, Hauppauge Nova 500T (dual)

    DTB Digital SD + HD content (PAL-MPEG2-AC3).
    Custom case made very quiet. Zalman CPU cooler.
    Sits in rack with other HiFi.

    ParaLED to show tuner activity.

    Display: 42" 1920x1080p Panasonic Plasma

    1x wired MVP
    1x PC client


  4. #4
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    Not sure what you mean. If I want to keep shows (like stuff for my son), I do xvid, w/ a bitrate of 775

  5. #5
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    I've also had sync problems when compressing large files with TMPEGenc. I found a tutorial at videohelp.com that gets around the problem by using VirtualDub to extract the audio to a Wav file and then using that as your audio source in TMPEGenc.

    TMPEGenc Tutorial

    VirtualDub Tutorial

    widman

  6. #6
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    Virtualdubmod is as fast as any, and allows for filtering and editing much easier than most.
    The original virtualdub won't open mpg files, so make sure you download virtualdubmod, virtualdub-mpg, virtualdub-mp3, virtualdub-ac3.
    Yes, there are at least 5 different virtualdubs.

    @ wannabpvr, read my post in this thread to learn more: http://forums.gbpvr.com/showthread.php?t=10399
    You can never have enough tuners!
    Pentium Quad / 4Gb Dual Channel RAM / XPSP3 / 2 x PVR-500, PVR-250 / GB-PVR

  7. #7
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    Thanks Widman, I quickly tried this but didn't get a menu to separate the audio out. I'll keep trying.

    Really I was hoping for a one step process. I look at how nicely DVDshrink transcodes and I would just love to apply this to broadcast Mpeg2. (As far as I see it DVD shring will only work on VOBs within a DVD structure?)

    3.2Gb per hour is murder on HDD space!
    Last edited by wannabepvr; 2005-11-10 at 02:21 AM.
    Core2-E2180, 1G RAM, 1Gb-5450 Silent, 2Tb +300g HDDs.
    Three tuners: Twinhan DVB-T x 1, Hauppauge Nova 500T (dual)

    DTB Digital SD + HD content (PAL-MPEG2-AC3).
    Custom case made very quiet. Zalman CPU cooler.
    Sits in rack with other HiFi.

    ParaLED to show tuner activity.

    Display: 42" 1920x1080p Panasonic Plasma

    1x wired MVP
    1x PC client


  8. #8
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    Give it another shot and make sure you are using VirtualDub-MPEG2. Like reboot mentioned, the standard Vdub won't process an MPEG2 file.

    widman

  9. #9
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    I've heard good things about AutoGK...think that's free, too.

  10. #10
    Join Date
    Sep 2005
    Location
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    Virtual confusion! I will try again....
    ..... this looks more promising....at least I see an audio menu....yes can export a .wav file...but TMEPGenc can't read the source video.

    hmmm....keep trying....
    Last edited by wannabepvr; 2005-11-10 at 03:25 AM.
    Core2-E2180, 1G RAM, 1Gb-5450 Silent, 2Tb +300g HDDs.
    Three tuners: Twinhan DVB-T x 1, Hauppauge Nova 500T (dual)

    DTB Digital SD + HD content (PAL-MPEG2-AC3).
    Custom case made very quiet. Zalman CPU cooler.
    Sits in rack with other HiFi.

    ParaLED to show tuner activity.

    Display: 42" 1920x1080p Panasonic Plasma

    1x wired MVP
    1x PC client


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