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FFmpeg recommended GPU transcoding command sets
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| #!/bin/bash | |
| # hevc_nvenc AVOptions (See https://gist.github.com/nico-lab/c2d192cbb793dfd241c1eafeb52a21c3 ) | |
| " | |
| -preset <int> E..V...... Set the encoding preset (from 0 to 18) (default p4) | |
| default 0 E..V...... | |
| slow 1 E..V...... hq 2 passes | |
| medium 2 E..V...... hq 1 pass | |
| fast 3 E..V...... hp 1 pass | |
| hp 4 E..V...... | |
| hq 5 E..V...... | |
| bd 6 E..V...... | |
| ll 7 E..V...... low latency | |
| llhq 8 E..V...... low latency hq | |
| llhp 9 E..V...... low latency hp | |
| lossless 10 E..V...... lossless | |
| losslesshp 11 E..V...... lossless hp | |
| p1 12 E..V...... fastest (lowest quality) | |
| p2 13 E..V...... faster (lower quality) | |
| p3 14 E..V...... fast (low quality) | |
| p4 15 E..V...... medium (default) | |
| p5 16 E..V...... slow (good quality) | |
| p6 17 E..V...... slower (better quality) | |
| p7 18 E..V...... slowest (best quality) | |
| " | |
| # Original Script | |
| ffmpeg -hwaccel cuda -hwaccel_output_format cuda -t 02:00:00 -i "input.mkv" -vcodec hevc_nvenc -profile:v main -preset p1 -rc vbr -cq 24 -qmin 24 -qmax 24 -b:v 0K -acodec libfdk_aac "output.mp4" | |
| # Partial script documentation | |
| ffmpeg \ | |
| -hwaccel cuda \ # HWAccel on Device (see https://developer.nvidia.com/blog/nvidia-ffmpeg-transcoding-guide/ ) | |
| -hwaccel_output_format cuda \ # See upper | |
| -t 02:00:00 \ # Crop first 2 hour! | |
| -i "input.mkv" \ # input is Matroska extension | |
| -vcodec hevc_nvenc \ # uses HEVC encoding along with HWAccel | |
| -profile:v main \ | |
| -preset p1 \ # p1's equivalent is fastest preset | |
| -rc vbr -cq 24 -qmin 24 -qmax 24 -b:v 0K \ # VBR and CQ=24 | |
| -acodec libfdk_aac \ # just for testing | |
| "output.mp4" |
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