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PPro CS5: MPEG-2 Export causes asynchronous A/V

May 19, 2010 8:59 AM

Hi all,

 

i think i just found a bug in PPro CS5. I've tested it on two PCs. Exporting an MPEG-2 through PPro CS5-Export or Media Encoder CS5 causes asynchronous Audio/Video - exactly 3 Frames the Video is before the Audio. I tested it with all MPEG-2-Export-Options, all kinds of Source-Material and all Export-Formats. The problem appears only with MPEG-2.

 

Maybe there's a problem with the MainConcept MPEG Exporter built in PPro CS5. The same procedures with PPro CS4 and Media Encoder CS4 work fine. There's one interesting exception. Changing the Audio-Settings in MPEG-2 Audio-Export-Configuration from MPEG to Dolby Digital, exports a video with asynchronous A/V of app. 0,5 Frames.

 

So i think it's a bug in the new built-in PPro MPEG-2 Exporter (MainConcept,CS5, 64 -Bit), focusing on the Audio-Export-Feature of an MPEG-Stream.

 

Anyone can reproduce this bug?

Where can i report such a bug to Adobe?

 

Thanks.

2145 Views   10 Replies   Latest reply: Todd_Kopriva, Sep 20, 2010 8:52 PM
 
Replies
  • John T Smith
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    1. John T Smith,
    May 19, 2010 9:25 AM   in reply to pvpcom20
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    Bug Report

    https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform
     
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  • pvpcom20
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    2. pvpcom20,
    Sep 2, 2010 6:03 PM   in reply to John T Smith
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    After upgrading to 5.0.2 i noticed that MPEG-2 Exports are still asynchronous.

     

    Look here, a Video i exported one time to DV PAL (1) and the other time to MPEG-2 (2). There are 3 Frames offset in the MPEG-2-File. My workaround now is to offset every MPEG-2 Output before rendering 3 Frames inverse.

     

    screen-mpeg-offset.jpg

     
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  • eddiem100
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    3. eddiem100,
    Sep 3, 2010 12:24 AM   in reply to pvpcom20
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    I've never had this problem and I export MPEG-2s all the time.  The only time I've had any issue like this is when i made some change to MPE or something and I didn't then restart premiere pro afterwards.  I'm not saying your not having an issue, but the mpeg-2s have been the most reliable for me so hopefully you can find the problem. Also check to see if you have any Anti virus software running at the same time.  Can do crazy things.

     
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  • Jim Simon
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    4. Jim Simon,
    Sep 3, 2010 12:25 AM   in reply to pvpcom20
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    Personally, the only time I would be using the antiquated MPEG2 export is for DVD, in which case I'd be exporting the audio as a separate WAV file, not a muxed MPEG.  For all other purposes, I use the much better H.264 codec.

     

    Is that not a suitable work flow for you as well?

     
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  • pvpcom20
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    5. pvpcom20,
    Sep 3, 2010 2:12 AM   in reply to pvpcom20
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    I need special configurated MPEG2-Files for upstreaming to a satellite. Can't use H264. I tested exporting on a fresh, virgin system - same problem. This error is happening on all our workstations in our office. I don't know what this should be??

     
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  • Bill Hunt
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    6. Bill Hunt,
    Sep 3, 2010 10:34 AM   in reply to pvpcom20
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    Many users sing the praises of Grass Valley's ProCoder 3. Might be worth a look?

     

    Good luck,

     

    Hunt

     
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  • Jim Simon
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    7. Jim Simon,
    Sep 3, 2010 11:01 AM   in reply to pvpcom20
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    There are free alternatives out there.  I use the excellent HC Encoder to create the MPEGs.  It does a noticeably better job of it than the included MainConcept encoder.

     
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  • Bill Hunt
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    8. Bill Hunt,
    Sep 3, 2010 11:04 AM   in reply to Jim Simon
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    Good rec. Jim.

     

    Thanks,

     

    Hunt

     
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  • pvpcom20
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    9. pvpcom20,
    Sep 3, 2010 11:43 AM   in reply to Bill Hunt
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    At our TV-Station we're outputting many Videos every day and they have to go right on satellite. We got no time to render an Ouptut and render again a MPEG2-File with another Software. Is there a solution to output right out of the Premiere Timeline?

     

    Thaks, Phil

     
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  • Todd_Kopriva
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    10. Todd_Kopriva,
    Sep 20, 2010 8:52 PM   in reply to pvpcom20
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    Sorry to come to this thread so late. The fixes that I know of for audio synch with MPEG-2 in the Premiere Pro CS5 (5.0.2) update required a deleting of files from the media cache to force re-indexing of the media for the fix to work---since the problem was with bad MPEG indexing.

     
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