jakemsr at jakemsr.com
Sat Apr 15 05:10:18 UTC 2006
On Fri, Apr 14, 2006 at 11:54:18PM -0400, Joe Auty wrote:
> Doing a:
> cat /dev/cxm0 > myvideo.mpg
> produces great mpeg2 video... However:
> ffmpeg -i /dev/cxm0 -t 10 test_ffmpeg.mpg
> produces 10 seconds of mpeg1 video that doesn't look as good.
> I've tried adding -f <format> and -vcodec options with -s 640x480,
> but I just can't seem to find something that will reproduce my raw
> feed without errors, loss of picture, the size being off, or
> reverting back to mpeg1.
> To save me a little further time in just random trial and error, can
> anybody hook me up with the combination I need?
sorry, but what exactly are you trying to do? what is lacking with
the cat command?
most likely, if you are running a transcoder (like ffmpeg, mencoder
or transcode), it is decoding the input into raw YUV or RGB and then
back to MPEG. this is a lossy and time/cpu consuming process.
<jakemsr at jakemsr.com>
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