How to get out manipulated frames lossless?

C++
4

Thanks for your reply :slight_smile:
Still…

  1. There is no way to adjust bitrate level. Just the quality level. And setting this has NO effect at all. The default value (which?) produces bad and wrong result filtes. Did you checked it by yourself? I did.
  2. As I wrote opencv only offers only FFV1 and HFYU for lossless encoding. And VideoWrite always writes them as RGB(A) (as mentioned which doesn’t exist by specification).
  3. What do you mean by “use ffmepeg’s libraries directly”? Write my own VideoWriter?
  4. Again: Does v.4.8. works correctly (not in theory but in practise)?