You can run VLC from the command prompt, in some extent VLC is an alternative of a part of ffmpeg faculties.
Upon installing VLC Media Player (by default vlc.exe is located in C:\Program Files\VideoLAN\VLC), i recommend adding “C:\Program Files\VideoLAN\VLC” to the path environment variable to run vlc.exe from any place.
Running VLC in Quiet mode
Each time you apply vlc.exe a corresponding VLC Media Player GUI window is opened. However, you can run vlc.exe in the quiet mode (i.e. without opening any GUI windows) by adding '-I dummy --dummy-quiet' . In such case you need check Task Manager whether vlc.exe completed or not (awkwardly):
Selected Operations with VLC
1) Convert from mp4 format to mpegts without re-encoding
vlc test.mp4 --play-and-exit --sout=#standard{access=file,mux=ts,dst=C:\Examples\test.ts}
--play-and-exit instruct VLC Media Player GUI to close itself at the end of the processing, otherwise we have to close GUI explicitly or tons of VLC Media Player windows are accumulated.
2) Transcoding
Example: change resolution to 720×576, encoding in h264, output bitrate 5Mbps
vlc test1080p.mp4 --play-and-exit --sout=#transcode{height=576,width=720,vcodec=x264,vb=5000}:std{access=file,mux=mp4,dst=test720p.mp4}
you can choose downscaling method, e.g. swscale-mode=2 (bicubic)
vlc test1080p.mp4 --play-and-exit --sout=#transcode{swscale-mode=2,height=576,width=720,vcodec=x264,vb=5000,acodec=aac,samplerate=44100}:std{access=file,mux=mp4,dst=test720p.mp4}
Example: change resolution to 720×576, encoding in hevc, output bitrate 5Mbps, output format mpegts:
vlc test1080p.mp4 --play-and-exit --sout=#transcode{height=576,width=720,vcodec=hevc,vb=5000}:std{access=file,mux=ts,dst=test720p.ts}
Example: change video frame rate to 10fps, encoding in hevc, output bitrate 5Mbps, output format mpegts
vlc test1080p.mp4 --play-and-exit --sout=#transcode{height=576,width=720,vcodec=hevc,vb=5000,fps=10}:std{access=file,mux=ts,dst=test10fps.ts}
Example: downmix audio to stereo (two channels), audio codec AAC (by default Low Complexity), the sample rate 44100, bitrate 192 kbps
vlc test_audio5_1.mp4 --play-and-exit --sout=#transcode{acodec=aac,samplerate=44100,channels=2,ab=192}:std{access=file,mux=ts,dst=test_stereo.ts}
note: for mp3 set ‘acodec=mp3’
23+ years’ programming and theoretical experience in the computer science fields such as video compression, media streaming and artificial intelligence (co-author of several papers and patents).
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