[FFmpeg-user] MPEG1/2 does not support 3/1 fps

db123 at bergqvist.se db123 at bergqvist.se
Tue Jan 12 00:37:36 CET 2016

Do you have a suggestion on what I should do instead? I simply want to 
stream my web cam to another computer and I have no clue on which 
encoder I should use.

Kind regards,

2016-01-12 00:31 skrev Moritz Barsnick:
> On Mon, Jan 11, 2016 at 21:12:05 +0100, db123 at bergqvist.se wrote:
>> Then I start ffmpeg with:
>> ffmpeg -f v4l2 -s 320x240 -r 25 -i /dev/video0 -f alsa -ac 2 -i hw:1,0
>> http://localhost:8090/feed1.ffm
>> But I get the errors:
>> MPEG1/2 does not support 3/1 fps
>> Error while opening encoder for output stream #0:1 - maybe incorrect
>> parameters such as bit_rate, rate, width or height
> I have come to the conclusion that
> http://ffmpeg.org/sample.html
> is a really bad example. Indeed, it tries to encode to mpeg1video with
> a frame rate of 3, which ffmpeg only supports if it is forced to so.
> Moritz
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