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+--- Thread: HD source input is slowed down (/thread-3824.html)
HD source input is slowed down - lostsnowboardvideos - 19.08.2024
Input a progressive HD source to encode and my conversion rate drops to around 3 fps when I get around 12 fps on SD input sources. I ran 2 different tests, one with nnedi3 resize enabled and one without since the input is already 1920x1080. Both around 3 fps speed. Source linked below. Debug included. Any recommendations?
Input source
RE: HD source input is slowed down - Selur - 19.08.2024
Since HD has 4 times the pixels, SD content has, an according speed drop to that the processing speed seems correct.
Especially filters like TemproalDegrain2, which are 'slow' to begin with.
You can try tweaking the settings. Like the block size for MAnalyse. Smaller block sizes give better results at the cost of speed.
Also, using num_streams=3 is probably a bottleneck, since you are probably running out of vram on HD content with it. (at least my system with 16GB VRAM would)
num_streams=3 on SD content is probably fine, but on HD and higher this will slow stuff down.
Increasing the fftThreads might help too.
Cu Selur
RE: HD source input is slowed down - lostsnowboardvideos - 20.08.2024
Ah yeah that makes sense now about the larger input source file. I was able to get pretty good results with SMDegrain settings that also sped it up a bit but to around 7 fps. I can live with that. Don't need to clean up the HD sources that much either since they look visually pretty clean.