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

• https://superuser.com/questions/329349/how-do-i-convert-iso-to-mp4-without-mounting-with-ffmpeg

  HandBrakeCLI -Z "High Profile" -i a_movie.iso -o a_movie.mp4

• HandBrakeCLI -Z "H.265 MF 1080p" -i GENESIS\ INVISIBLE\ TOUCH\(1\).ISO -o Genesis-InvisibleTouch.mp4

• HandBrakeCLI -Z "Super HQ 1080p30 Surround"  -audio-lang-list "eng" -i GENESIS\ INVISIBLE\ TOUCH\(1\).ISO -o Genesis-InvisibleTouch.mp4

• ffmpeg -ss 00:00:30.0 -i GENESIS\ INVISIBLE\ TOUCH.mkv -c copy -t 00:07:10.0 Genesis-InvisibleTouchCutted.mp4

• https://mediaarea.net/en/MediaInfo
• https://pcundvideo.de/videoqualitat-verbessern/?cn-reloaded=1
• https://qastack.com.de/superuser/138331/using-ffmpeg-to-cut-up-video

• https://superuser.com/questions/1671831/parallel-transcoding-with-ffmpeg-on-m1-mac/1671915
• 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