[FFmpeg-devel] libavformat and video4linux2 acquire problems

[Limin Wang]

Hi,

> > In my local copy, I have changed default tvstd to NULL.
> What does a NULL tvstd mean? Does it leave the tv standard as it is, 
> without trying to set it? If yes, I think we need this patch.

Yes, it'll leave the tv standard as system is if it's NULL. I'll submit
it tonight for review.

 
> > and -vc to string(S-video, composite0,...)
> I do not think this one is useful. I have seen cards in which the first 
> composite input is "composite0", and other cards in which the first 
> composite input is "composite1"... So, I think that using the input name 
> is not too reliable.

With int value, you had to try with 0, 1, 2, 3 even you know it's S-video
input. If you're preferable to use int, I'll not submit this change. So 
how about to use -1 to leave default system config as tvstd use NULL?


Thanks,
Limin