[FFmpeg-user] mpeg4 bitrate encoding problem too low

dE . de.techno at gmail.com
Sat Dec 31 12:35:45 CET 2011

On 12/29/11 10:41, aris sirajawali wrote:
>   hi,
> I have a problem when I encode the video with mpeg4 code.
> I use this command:
> ffmpeg-y-threads 8-i-croptop INPUT.MOV cropbottom 90-90-s QCIF-aspect 16:9-r
> 24-vcodec mpeg4-pass 1-b 224k-maxrate 704k-bufsize 1408k-g 24-an-deinterlace
> OUTPUT.MP4&  &
> / ffmpeg-y-threads 8-i-croptop INPUT.MOV cropbottom 90-90-s QCIF-aspect 16:9
> -r 24-vcodec mpeg4-pass 2-b 224k-maxrate 704k-bufsize 1408k-g 24-acodec
> libfaac -ac 2-ar 44100-ab 32k-deinterlace OUTPUT.mp4
> by using the command I get an error message like the following:
> Error: bitrate too low for this video with these parameters.
> error while opening codec for output stream # 0.0 - maybe incorrect
> parameters Such as bit_rate, rate, width or height.
> please help
> thanks a lot
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user

I'd suggest you remove -maxrate (and it's argument) and increase the 
number after the -b (to, for e.g. 400k)

More information about the ffmpeg-user mailing list