ffmpeg

ffmpeg

https://ntown.at/de/knowledgebase/cuda-gpu-accelerated-h264-h265-hevc-video-encoding-with-ffmpeg/

ffmpeg.exe -hwaccel cuvid -i inmovie.mov -pix_fmt p010le -c:v hevc_nvenc -preset slow -rc vbr_hq -b:v 6M -maxrate:v 10M -c:a aac -b:a 240k outmovie.mp4

https://trac.ffmpeg.org/wiki/Encode/H.265 https://github.com/Wlanfr3ak/mixed-scripts

  • ffmpeg -i input4kvid.mp4 -vf scale=1920:1080 -c:a copy output1080vid.mp4 Convert 4k to 1080 (no change in codec)
  • ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -c:a copy output.mp4 Convert h.264 to h.265 (no change in resolution)
  • ffmpeg -i input.mkv -c:v hevc_videotoolbox -vtag hvc1 -c:a copy output.mp4 MacOS HWaccel
  • ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -vf scale=1920:1080 -crf 20 -c:a copy output.mp4 Convert 4k(h.264) to 1080(h.265) Downscaling + Change in compression codec

Film zu 1080p konvertieren: ffmpeg -i .mkv -c:v libx265 -vtag hvc1 -vf scale=1920:1080 -crf 20 -c:a copy .mp4

ffmpeg -i IMG_4483.MOV -vf fps=1/0.3 -s 2160x3840 "imageX_%05d.jpg"
Options Explained
-i input file name or file path

-c:v libx265 -vtag hvc1 selecting compression. Default is libx264

-vf scale=1920:1080 specifying output resolution

-c:a copy copy audio as it is without any compression

-preset slow ask compression algorithm to take more time & look for more areas for compression. Default is medium. Other options are faster, fast, medium, slow, slower

-crf 20 Compression quality

-crf 0 high-quality, low compression, large file

-crf 23 default

-crf 51 low-quality, high compression, small file
  • ffmpeg.txt
  • Zuletzt geändert: 2022/05/19 19:49
  • von Fabian Horst