[theora] ffmpeg2theora 0.25 synchronization issues when converting from .mov

Andrew Chew andrew at okashistudios.com
Thu Oct 1 17:05:02 PDT 2009

On Sep 30, 2009, at 10:49 PM, Michael A. Peters wrote:

> Andrew Chew wrote:
>> Has anyone noticed this?  I have a video made with Final Cut Pro,   
>> which I convert to .mov via Compressor.  This .mov file plays back   
>> fine in Quicktime.  But when I then use ffmpeg2theora to convert  
>> to  ogv, the video seems to play back too fast compared to the  
>> audio (I'm  using VLC 1.0.2, the latest I believe, to play back the  
>> ogv file, and  I also have an app that uses the recently released  
>> libtheora 1.1, and  I see the same sped-up video as with VLC).
>> I'm wondering if it's a known problem, or if I'm the first to see  
>> this.
> I've not seen that and I just re-encoded all my stuff to take  
> advantage of 2 pass (using static x86_64 linux bin) - but I have  
> seen audio/video issue going from mjpeg to ogv. I solved that issue  
> by importing the mjpeg avi into kino and saving as dv and then using  
> ffmpeg2theora.
> I assume by .mov you mean h.264 w/ AAC ??
My quicktime movies are uncompressed video (using Compressor's  
Animation NTSC setting), with I assume AAC for audio.

> What happens when you export from FCP to mpeg2 and then run  
> ffmpeg2theora on that?
> For the record, I've not had any problems using older libtheora  
> based players on ogv made with latest ffmpeg2theora.

More information about the theora mailing list