LosslessCut aims to be the ultimate cross platform ffmpeg GUI for extremely fast and lossless operations on video, audio, subtitle and other related media files. The main feature is lossless trimming and cutting of video and audio files, which is great for saving space by rough-cutting your large video files.
https://github.com/mifi/lossless-cut
https://github.com/mifi/lossless-cut/releases
To remove audio or subtitle tracks from mkv files, the mkvmerge command can be used.
First, identify the track ids contained in the mkv file:
mkvmerge -i videofile.mkv
The output will look something like this:
kax i am at 6718 File 'videofile.mkv': container: Matroska Track ID 0: audio (AC3/EAC3) Track ID 1: subtitles (SubRip/SRT) Track ID 2: subtitles (SubRip/SRT) Track ID 3: video (MPEG-4p10/AVC/h.264) Track ID 4: audio (DTS) Chapters: 17 entries Tags for track ID 0: 7 entries Tags for track ID 1: 7 entries Tags for track ID 2: 7 entries Tags for track ID 3: 7 entries Tags for track ID 4: 7 entries
For more detailed information the mkvinfo command can be used:
mkvinfo videofile.mkv
To create a new mkv file with the subtitles removed and only keeping the second audio stream, use the following command:
mkvmerge -o newvideofile.mkv -a 4 -s 0 videofile.mkv
To extract tracks from an mkv file, use the mkvextract command using the IDs obtained from mkvinfo:
mkvextract tracks videofile.mkv 2:subtitletrack2.srt 3:subtitletrack3.srt
ffmpeg -i 'input' -map 0 -c copy 'output.mkv'
To Flip Video Vertically (upside down):
ffmpeg -i INPUT.mp4 -vf vflip -c:a copy OUTPUT.mp4
To Flip Video Horizontally (left/right):
ffmpeg -i INPUT.mp4 -vf hflip -c:a copy OUTPUT.mp4
ffmpeg -i "concat:VTS_01_1.VOB|VTS_01_2.VOB|VTS_01_3.VOB|VTS_01_4.VOB|VTS_01_5.VOB|VTS_01_6.VOB|VTS_01_7.VOB" -filter_complex "scale=ceil(iw*min(1\,min('1080'/iw\,'720'/ih))/2)*2:-2" -c:v libx264 -crf 28 -c:a aac -b:v '4M' -maxrate '4M' -bufsize '4M' -f mp4 output.mp4
or
cat ./VIDEO_TS/VTS_01_*.VOB | ffmpeg -i - -filter_complex "scale=ceil(iw*min(1\,min('1080'/iw\,'720'/ih))/2)*2:-2" -c:v libx264 -crf 28 -c:a aac -b:v '4M' -maxrate '4M' -bufsize '4M' -f mp4 output.mp4