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H.264 BD vs. MPEG2 BD CBR multiplexed issue ?

Dec 25, 2012 9:43 PM

Let me know if you need more information here.  I have a ~12 minute long video made from predominantly 720p source along with some audio tracks, a few stills, etc.  Long story for a different day, but for now I need to export using CBR.    If I export using the H.264 Blu-ray 720p 59.94 CBR multiplexed with the bit rate set to 25to produce a .m2t file the audio is craked up and the playback is laggy, slower than real time.  This occurs on an i7, 32GB, GTX 670, RAID 0 PC as well as natively off a USB flash drive on a Sony BD player.   If I use the same settings / .m2t with the MPEG2 Blu-ray format I have no issue.   Or if I drop the bit rate to 15 (default) on the H.264 it works.   Anyway, is this result to be expected?   Thanks

 
Replies
  • Currently Being Moderated
    Dec 26, 2012 6:09 PM   in reply to joneisele

    How are you playing on the PC?

     
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    Dec 27, 2012 9:23 AM   in reply to joneisele

    I'd start by:

     

    1. Cleaning the Media Cache Database

    2. Trashing your Preferences.  Read here: Adobe - Blog: Having weird

        behavior with an Adobe video product? Consider tossing your

        preferences away

        <http://blogs.adobe.com/genesisproject/2009/11/having_weird_behavior_wi th_an.html>

     

    Jeff

     
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    Dec 27, 2012 12:01 PM   in reply to joneisele

    Try uploading a file that you're having trouble with.  I want to test it out on my system.

     

    http://www.depositfiles.com/en/

     
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    Dec 27, 2012 5:23 PM   in reply to joneisele

    I assume you're not having any trouble with the source media, only the exports, right?

     
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    Jan 4, 2013 8:25 AM   in reply to joneisele

    Does the H264 file choke when exported with no audio, with multiplexer off?

     
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    Jan 4, 2013 11:08 AM   in reply to joneisele

    Do I just upload a file and then email you the resultant link?   Are ~2GB files ok?

     

    Yes to both questions.

     
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    Jan 8, 2013 4:04 PM   in reply to joneisele

    The file seems to be playing back just fine for me.  Tested on three different media players in an i7 2500 with 8GB of RAM.  It also played fine from a USB plugged into a Sony Blu-ray.

     

    AVC is more processor intensive, so if a lack of horsepower is the issue, it's no surprise that MPEG2 files work fine, as they require less power.

     
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    Jan 8, 2013 4:06 PM   in reply to joneisele

    Yeah, that CPU is more than powerful enough, so something else is going on.

     

    I tried KM Player (my default), VLC and Windows Media Player.  All worked fine.

     
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    Jan 8, 2013 4:36 PM   in reply to joneisele

    Windows 8, also with WMP 12.  I don't know why the issues, though.  The file itself seems to be fine.

     
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    Jan 8, 2013 5:02 PM   in reply to joneisele

    AAC audio?

     
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    Jan 8, 2013 5:51 PM   in reply to Stephen_Spider

    AC3.

     
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