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Re: buffer underflow, any fix?: msg#00200

video.ffmpeg.user

Subject: Re: buffer underflow, any fix?

On Sat, 22 Apr 2006 23:05:59 -0400, T wrote:

> What's the reason and is there any fix for the buffer underflow problem?
>
> Ie. when converting video, I get a lot of such errors:
>
> [mpeg @ 0xb7fc9860]buffer underflow

I notice the converted video paused here and there when played back with
VLC. The sound still continuing, but the picture freezes, sometimes 2 or 3
seconds, sometimes even nearly 10 seconds. It happened 3 or 4 times in the
3-minute clip that I tested.

Is the pausing related with the buffer underflow, or it is a separate
issue entirely.

> I'm already using VBR, like the following, why I still get buffer
> underflow?
>
> ffmpeg -i "VTS_06_1.VOB" -acodec ac3 -ab 224 -ar 48000 -ac 2 -vcodec
> mpeg2video -b 3600 -maxrate 4500 -bufsize 224 -sameq -ss 0:6:50 -vframes
> 3000 "VTS_06_1.mpg"

thanks a lot.

tong


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