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=Transcoding with VLC= | |||
VLC while mainly known for being a good video player, can also be used as a tool for transcoding. Since it has good support for most formats, it is a good choice when wanting a powerful and yet relatively simple transcoder. | VLC while mainly known for being a good video player, can also be used as a tool for transcoding. Since it has good support for most formats, it is a good choice when wanting a powerful and yet relatively simple transcoder. | ||
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VLC comes with 2 executables, ''vlc'' and ''cvlc''. both accept the same options, but when using cvlc the GUI will not be launched. This is very useful when transcoding on a remote machine without access to a desktop. | VLC comes with 2 executables, ''vlc'' and ''cvlc''. both accept the same options, but when using cvlc the GUI will not be launched. This is very useful when transcoding on a remote machine without access to a desktop. | ||
=Commands= | |||
Example command: | |||
vlc "/path/to/input.vob" --sout='#transcode{vcodec=VP80,vb=5000},acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}' | |||
Codec options: | |||
''vcodec'' is the video codec used, in this case VP80 (webm). ''vb'' is the ''video bitrate'' set to 5000 bit/sec | |||
''acodec'' is the audio codec used, in this case vorbis. ''ab'' is the ''audio bitrate'' set to 128 bit/sec. 2 channels for stereo sound | |||
''mux'' is set to webm (webm required VB80 as video codec and vorbis as audio codec) | |||
No video filters are used in this example | |||
=Cropping= | |||
When encoding a video that contains a black frame around it, it is very useful to peel away the black frame and only leave the actual image-part behind. This can be done by cropping the video. First it is however necessary to know what part to crop away | |||
==Cropping with VLC graphical user interface== | |||
Revision as of 11:24, 22 June 2013
Transcoding with VLC
VLC while mainly known for being a good video player, can also be used as a tool for transcoding. Since it has good support for most formats, it is a good choice when wanting a powerful and yet relatively simple transcoder.
It is possible to both do transcoding from commandline and from the graphical user interface. However the graphical user interface lacks many options (ie. cropping), and the commanline options are not build in a standardized way. This guide will give some very useful commands for transcoding with VLC through commandline.
VLC comes with 2 executables, vlc and cvlc. both accept the same options, but when using cvlc the GUI will not be launched. This is very useful when transcoding on a remote machine without access to a desktop.
Commands
Example command:
vlc "/path/to/input.vob" --sout='#transcode{vcodec=VP80,vb=5000},acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'
Codec options: vcodec is the video codec used, in this case VP80 (webm). vb is the video bitrate set to 5000 bit/sec acodec is the audio codec used, in this case vorbis. ab is the audio bitrate set to 128 bit/sec. 2 channels for stereo sound mux is set to webm (webm required VB80 as video codec and vorbis as audio codec) No video filters are used in this example
Cropping
When encoding a video that contains a black frame around it, it is very useful to peel away the black frame and only leave the actual image-part behind. This can be done by cropping the video. First it is however necessary to know what part to crop away
