Encoding Discussion Megathread (ffmpeg, Handbrake, AV1, etc...)

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I missed that you had some new posts since my last one. I'm still semi-automated since I'm altering based on what type of media as well as age. The easier media are seasons or shows where you expect a level of consistency.

Code:

                -adaptive_i 1 \  # new
                -adaptive_b 1 \  #new
                -b_strategy 1 \  #new
                -bf 39 \  #new

I don't know what these do so I haven't played with them. I also don't see the -bf parameter in the av1_qsv encoder help. I guess -bf is to set the number of b-frames? I don't really understand what that means.

-extra_hw_frames 40 \  # new to me.  the same as -filter:v:0 "hwupload=extra_hw_frames=64 in your command???

I don't think so. On the decode side (i.e., option comes before before the file), this would throw extra frames on the device on the front-end. What the advantage is I'm not sure. Possibly faster decoding? The video filter portion (i.e., option after the input file) is for encoding. Based on what you have there, I wonder if look_ahead_depth should match the number of extra frames uploaded to the hw device in my own code...