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fils.giovannini
fils.giovannini
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Audio out of sync when exporting in h.264

Sep 11, 2011 4:52 AM

Hello everyone,

 

I've just created a slideshow of still images (photos) in PrPro 5.5. I put a rythmic song as soundtrack and I had the pictures synchronized with the main beats of the song. Especially in the last part, the rythm is very fast and consequentely the images' speed increase.

 

When I watch the sequence in PrPro, everything works fine, but if I export it in h.264 (no matter what resolution or bitrate) the last part goes out of syncs. It's a matter of a couple of frames, but of course it's very annoying and anyone can see there's something wrong with it.

 

I tried to export the sequence in MPEG2, and it was fine, so it's just a problem with the h.264.

 

Any ideas about what is happening here?

 

Many thanks

268 Views   2 Replies   Latest reply: fils.giovannini, Sep 11, 2011 1:00 PM
 
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  • UlfLaursen
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    1. UlfLaursen,
    Sep 11, 2011 10:21 AM   in reply to fils.giovannini
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    hi

     

    i think you need to give up some more info to get help. are you on pc or mac, what are your settings and footage etc.

     

    i had some problems like that when i exported h264 from avchd on pc and it turned out to be windows mediaplayer only, qt player was fine and vimeo upload was fine too

     

    Ulf

     
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  • fils.giovannini
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    2. fils.giovannini,
    Sep 11, 2011 1:00 PM   in reply to UlfLaursen
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    Hi, you're right:

     

    I'm on a Mac pro, 8 core, nvidia quadro 4000, 18 gb RAM. The footage are still jpegs (but i also tried converting the whole sequence in .MOV and put it back on the same music, but with the same result of outsyncing).

     

    Actually I tried to watch the exported clip on VLC instead of Quicktime, and it worked well.

     

    I also tried to export the sequence in XML, reimport it in Final Cut Pro 7 and then export in h.264. With Final Cut it worked fine also playing in Quicktime.

     

    So is it just PrPro' h.264 export which doesn't get on with Quicktime? A part from this work, however, I never noticed anyhting wrong, but maybe I didn't because there weren't all those cuts on the rythm..

     

    fils

     
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