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Gmane
From: Roger Pack <rogerdpack2 <at> gmail.com>
Subject: Re: Encoding to mpeg2video results in buffer underflows
Newsgroups: gmane.comp.video.ffmpeg.user
Date: Sunday 30th December 2012 22:04:15 UTC (over 3 years ago)
On 12/30/12, Carl Eugen Hoyos  wrote:
> Jonathan Isom  gmail.com> writes:
>
>> ffmpeg -i mpeg2video_underrun.mp4 -b:v 8000000 -qmin 1 -qmax 5
>> -c:v mpeg2video -c:a ac3 -f mpeg mpeg2video_underrun.mpg
>
> This command line shows the following warning:
> VBV buffer size not set, muxing may fail

I think I've seen this before.
http://ffmpeg.org/pipermail/ffmpeg-user/2012-January/004329.html
may
also be related.  Does some default need to be set here?
 
CD: 4ms