[FFmpeg-devel] Up to Date DeckLink Support broken in FFMPEG

[Marton Balint]

On Wed, 5 Feb 2025, Leo Izen wrote:

> On 2/5/25 4:44 PM, ffmpeg at gallery.co.uk wrote:
>>  Hi Folks
>>
>>  It seems like the current decklink code in FFMPEG is no longer fully
>>  compatible with the latest Decklink drivers
>>  The behaviour seen is that output via DeckLink starts OK but very quickly
>>  stalls. Apparently its related to the callbacks.
>>  I believe this broken with BMD drivers 13.3 and later
>>
>>  Has anyone here already fixed the FFMPEG code to work again ?
>>
>>  If no-one has attempted this fix, I will give it a go, but if someone is
>>  ahead of me please let me know
>>
>>  Thanks !!!
>>
>>  Mark.
>> 
>
> Feel free to take a look. The last change to the decklink code in FFmpeg was 
> authored last april (not counting minor one-line bugfixes and the like) and 
> as far as I am aware nobody is currently working on that so you wouldn't be 
> redoing someone else's work.

There is a patch linked in the blackmagic forums:

https://forum.blackmagicdesign.com/viewtopic.php?f=12&t=213592

Regards,
Marton