[Ffmpeg-devel] Re: [PATCH] Configure selectable video grab format

[Michel Bardiaux]

Ramiro Polla wrote:
> Ramiro Polla wrote:
>> Michel Bardiaux wrote:
>>> M?ns Rullg?rd wrote:
>>> [snip]
>>>>
>>>> That said, I don't like the design of the grabbing code at all.  
>>>> IMHO it would
>>>> be much cleaner to simply run ffmpeg -f v4l2 -i /dev/video0 or 
>>>> whatever,
>>>> dropping the whole concept of a default grabbing device used if no 
>>>> input is
>>>> specified.
>>>>
>>> FWIW I agree.
>>>
>> Me too =).
>>
>> The code for using a default grabbing device is really buggy (the 
>> grabbing interfaces depend on what has been set for output).
> It seems this would be just removing a bunch of redundant code (like 
> Michael said), and making few adaptations to the existing -i code.
> One problem with -i <grab device> is when you want to use the default 
> grab device. This could be accomplished by (some suggestions):
> a) using the '-' character

Please dont, '-' generally means stdin. AAMOF ffmpeg -i - < /dev/video0 
*should* work as expected.

> b) making -grab mean -i <default device>.

Why do you insist on having a default grab device?

> 
> Ramiro Polla


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Michel Bardiaux
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