[FFmpeg-user] Decklink input extra filter inserted

Carl Zwanzig cpz at tuunq.com
Tue Jan 19 00:51:02 EET 2021

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? 

scale_npp=format=yuv444p,  (why is that there?)

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?



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