[FFmpeg-user] Screencast produces only gray output

[look at ebookring.net]

On 2012-11-19 06:48, Carl Eugen Hoyos wrote:
> <look <at> ebookring.net> writes:
>
>> Here's the original code I used that produces the
>> gray screen;
>>
>> $ ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 10
>> -s 1280x800 -i :0.0 -acodec pcm_s16le -vcodec libx264
>> -preset ultrafast -crf 0 -threads 0 output.mkv
>
>> Output #0, matroska, to 'output.mkv':
>>    Metadata:
>>      encoder         : Lavf54.36.100
>>      Stream #0:0: Video: h264, yuv444p, 1280x800
>
> Can you confirm that the output file plays fine with ffplay
> (that your playback software is the culprit)?

Yes, with ffplay it does "play" but all motion is very fast like a 
silent movie. Still, I get audio and video.


>
> Is the playback speed problem reproducible no matter if
> you encode with audio or without?

Yes, that is correct.



>
> Carl Eugen


>
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