[FFmpeg-devel] libavdevice/decklink trivial patch for SDI input/output

Marton Balint cus at passwd.hu
Sun Sep 23 22:33:05 EEST 2018

On Thu, 6 Sep 2018, Baldur Gislason wrote:

> Sending this again as the mime type was wrong for the patch on the last message.
> I have prepared a patch that adds two things.
> On the Decklink input side, it adds a parameter called 'passthrough'
> which makes it possible to change from the default behaviour on cards
> that can handle both inputs and outputs. The default behaviour on such
> cards depends on the model but many of them will pass through the
> input signal if the application generating the output stops. This is
> not always desirable so the Decklink API provides a method of changing
> it.
> On the output side, it adds a parameter called 'sdi_link' which is
> crucial when working with SDI output cards that support 3G SDI or
> faster. The default behaviour for 1080p60 for example is to use two
> HD-SDI links and the default for 2160p29.97 is to use four HD-SDI
> links. This option makes it possible to specify how many SDI links are
> to be used to make use of 3G, 6G or 12G SDI capabilities of newer
> cards which can output those configurations over a single cable.

Thanks, could you please update docs/indevs.texi and docs/outdevs.texi 
with the new options?

Also please check the indentation inside the switch() {} sections.


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