[FFmpeg-devel] [PATCH] decklink: support all valid numbers of audio channels

[Timothy Gu]

Hi,

On Sat, Dec 19, 2015 at 11:23 AM Matthias Hunstock <
matthias.hunstock at tu-ilmenau.de> wrote:

> Am 18.12.2015 um 20:25 schrieb Matthias Hunstock:
> > Introduces new option.
>
> PS. I did not find any ressources on how to properly name new FFmpeg
> options, e.g. to be consistent. Using the existing "ac" option did not
> work.
>

In this situation, it is always good to check what others are using :)

In this case, all the input devices seem to use "channels":

https://github.com/FFmpeg/FFmpeg/blob/master/libavdevice/alsa_dec.c#L146
https://github.com/FFmpeg/FFmpeg/blob/master/libavdevice/dshow.c#L1269

Indeed, -ac is actually mapped to "channels" within the ffmpeg program:
https://github.com/FFmpeg/FFmpeg/blob/master/ffmpeg_opt.c#L900


> I would like to add some more features, like selection of video and/or
> audio input jack, to improve the coverage of the DeckLink API.
>
> I also have access to several different BM cards, so I can test things
> with real hardware.
>

Great!

Timothy