[ogg-dev] ffmpeg2theora bug

Frank Barchard fbarchard at google.com
Mon Apr 26 11:07:00 PDT 2010

On Mon, Apr 26, 2010 at 2:47 AM, <j at v2v.cc> wrote:

> Hi,
> On 04/24/2010 01:26 PM, Silvia Pfeiffer wrote:
> > Did anybody ever reply to this, I wonder?
> in case nodbody did,

no.  Thanks for the followup

> > On Tue, Aug 11, 2009 at 7:30 AM, Frank Barchard <fbarchard at google.com>
> wrote:
> >> I've got a video that causes ffmpeg2theora (nightly) to crash.  How/who
> do I
> >> go about getting you guys the source video.
> >> At times in the past this video encoded, but I had wanted about 2 mbit/s
> and
> >> it came out 200 kbit/s, and very low quality.
> >> It encodes okay with ffmpeg, but the reason I'm wanting to try
> ffmpeg2theora
> >> is that we see AV sync issues, and I want to know if its in the tool
> side or
> >> the runtime.
> please file a bug at https://launchpad.net/ffmpeg2theora and provide a
> link to a sample if possible. can you also check again that the crash is
> still happening. What command line options did you use?
> j
The crash appears to be fixed in 0.26.. but the full recompress takes ~12
hours, so I wont know for awhile.

example command line
ffmpeg -y -r 25.000 -s 1280x720 -i wembly.1280x720_25Hz_P420.yuv
ffmpeg2theora --optimize -v 9 -o wembly2.ogv wembly_tmp.mov

I normally use ffmpeg to encode theora due to AV sync issues.  See Also
chromium bugs
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