[FFmpeg-user] Decklink input extra filter inserted

[Carl Zwanzig]

On 1/18/2021 9:57 AM, Bartosz Ziemski wrote:
> Do you have any idea how to omit this scaling and get frames uploaded to
> cuda device? 

hwupload_cuda,
scale_npp=format=yuv444p,  (why is that there?)
yadif_cuda,
scale_npp=w=1280:h=720:interp_algo=lanczos:format=yuv420p

I'm certainly not well-versed in cuda (and I'm sure someone will correct 
me...) but...

That's multiple pixfmt changes, which may not be necessary.

The input is progressive* why run it through a deinterlacer?
*(Stream #0:1, 2, 1/1000000: Video: rawvideo, uyvy422(progressive), 1920x1080)

It just seems to me that the entire filter graph doesn't make sense. What's 
the goal?

Later,

z!