[MPlayer-users] Cannot record audio from tv tuner.
adf.lists at gmail.com
Tue Aug 12 19:33:42 CEST 2014
Marc MERLIN wrote:
> Let's look at this problem first, it's the more important one for
> time mencoder tv:// -ovc x264 -x264encopts
> -oac mp3lame -lameopts cbr:br=128 -fps 25 -o test.avi -tv
> <=== gives v4l2: ioctl set format failed: Invalid argument
It's many years since I ripped from tape but to get 422 from my card I
used planar outfmt=yuy2.
The only reason I used 422 was that I wanted to use dv50 as an
intermediate format (it was the best my PC at the time could do).
I don't think PAL is 422 to start with - so if you don't have a specific
need it would easier to ask the card for 420 eg, yv12.
There should be a way to query the card/v4l2 for supported formats like
v4linfo - maybe mplayer/mencoder with -v will give extra info (maybe not
- it was years ago).
Using 422 for interlaced content can result in extra scope for errors
when converted to 420.
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