Transcoding with VLC - Revision history

Steffen Mikkelsen at 08:31, 28 February 2017

2017-02-28T08:31:15Z

← Older revision		Revision as of 08:31, 28 February 2017
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	vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit		vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit
	Adding vlc://quit will make VLC quit after it has finished the transcoding		Adding vlc://quit will make VLC quit after it has finished the transcoding

			=Other=
			Disable audio on video by setting acodec=none

Steffen Mikkelsen: /* Two-pass encoding with h264 */

2014-02-08T17:33:52Z

Two-pass encoding with h264

← Older revision		Revision as of 17:33, 8 February 2014
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	This will use the default "blend" deinterlace mode. Many favors the Yadif (2x) deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''		This will use the default "blend" deinterlace mode. Many favors the Yadif (2x) deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''
	vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'		vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'
	=Two-pass encoding with h264=		=Two-pass encoding with h264 / x264=
	Unfortunately VLC has not implemented two-pass encoding support for webm. h264 codec has to be used. Two-pass has the advantage of using the bitrate better by using more bits on hard parts and fewer on easy parts. Here is an example of two-pass encoding with h264		Unfortunately VLC has not implemented two-pass encoding support for webm. h264 codec has to be used. Two-pass has the advantage of using the bitrate better by using more bits on hard parts and fewer on easy parts. Here is an example of two-pass encoding with h264

Steffen Mikkelsen: /* Two-pass encoding with h264 */

2014-02-04T12:48:43Z

Two-pass encoding with h264

← Older revision		Revision as of 12:48, 4 February 2014
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	Unfortunately VLC has not implemented two-pass encoding support for webm. h264 codec has to be used. Two-pass has the advantage of using the bitrate better by using more bits on hard parts and fewer on easy parts. Here is an example of two-pass encoding with h264		Unfortunately VLC has not implemented two-pass encoding support for webm. h264 codec has to be used. Two-pass has the advantage of using the bitrate better by using more bits on hard parts and fewer on easy parts. Here is an example of two-pass encoding with h264

	#First pass. Put stats on stats.log file		#First pass. Put stats in stats.log file
	vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=1 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit		vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=1 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit
	#Second pass. Use stats.log file for better encoding and replace original encoded file with new one		#Second pass. Use stats.log file for better encoding and replace original encoded file with new one
	vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit		vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit
	Adding vlc://quit will make VLC quit after it has finished the transcoding		Adding vlc://quit will make VLC quit after it has finished the transcoding

Steffen Mikkelsen: /* Two-pass encoding with h264 */

2014-01-26T21:20:19Z

Two-pass encoding with h264

← Older revision		Revision as of 21:20, 26 January 2014
Line 57:		Line 57:

	#First pass. Put stats on stats.log file		#First pass. Put stats on stats.log file
	vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=1 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}'		vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=1 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit
	#Second pass. Use stats.log file for better encoding and replace original encoded file with new one		#Second pass. Use stats.log file for better encoding and replace original encoded file with new one
	vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}'		vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}' vlc://quit
			Adding vlc://quit will make VLC quit after it has finished the transcoding

Steffen Mikkelsen at 20:16, 26 January 2014

2014-01-26T20:16:14Z

← Older revision		Revision as of 20:16, 26 January 2014
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	This will use the default "blend" deinterlace mode. Many favors the Yadif (2x) deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''		This will use the default "blend" deinterlace mode. Many favors the Yadif (2x) deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''
	vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'		vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'
			=Two-pass encoding with h264=
			Unfortunately VLC has not implemented two-pass encoding support for webm. h264 codec has to be used. Two-pass has the advantage of using the bitrate better by using more bits on hard parts and fewer on easy parts. Here is an example of two-pass encoding with h264

			#First pass. Put stats on stats.log file
			vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=1 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}'
			#Second pass. Use stats.log file for better encoding and replace original encoded file with new one
			vlc test.avi --sout-x264-stats=stats.log --sout-x264-pass=2 --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=h264,vb=5000,deinterlace,acodec=mp3,ab=128,channels=2}:std{access=file,mux=mp4,dst="test-encoded.mp4"}'

Steffen Mikkelsen: /* Deinterlacing */

2013-10-27T12:51:54Z

Deinterlacing

← Older revision		Revision as of 12:51, 27 October 2013
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	VLC comes with filters that can deinterlace the video. The simplest way is to simply add ''deinterlace'' to the video options.		VLC comes with filters that can deinterlace the video. The simplest way is to simply add ''deinterlace'' to the video options.
	vlc "/path/to/input.vob" --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'		vlc "/path/to/input.vob" --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'
	This will use the default "blend" deinterlace mode. Many favors the ~~"yadif2x"~~ deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''		This will use the default "blend" deinterlace mode. Many favors the Yadif (2x) deinterlace mode. To use this you need to also add ''--sout-deinterlace-mode=yadif2x''
	vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'		vlc "/path/to/input.vob" --sout-deinterlace-mode=yadif2x --sout='#transcode{vcodec=VP80,vb=5000,deinterlace,acodec=vorbis,ab=128,channels=2}:std{access=file,mux="ffmpeg{mux=webm}",dst="/path/to/output.webm"}'

Steffen Mikkelsen: /* Find area to be cropped with VLC graphical user interface */

2013-06-22T12:20:30Z

Find area to be cropped with VLC graphical user interface

← Older revision		Revision as of 12:20, 22 June 2013
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	*'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.		*'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.
	If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.<br/>		If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.<br/>
	[[image:VLCExtendedSettings.png]]		[[image:VLCExtendedSettings.png\|150px]]

	==Find area to be cropped with mplayers cropdetect==		==Find area to be cropped with mplayers cropdetect==

Steffen Mikkelsen: /* Find area to be cropped with VLC graphical user interface */

2013-06-22T12:18:45Z

Find area to be cropped with VLC graphical user interface

← Older revision		Revision as of 12:18, 22 June 2013
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	*Play the video you want to encode. Click the "Show extended settings" icon, left to the playlist button. In the popup select "Video Effects" and "Crop". Now you can visually inspect the best values for cropping.		*Play the video you want to encode. Click the "Show extended settings" icon, left to the playlist button. In the popup select "Video Effects" and "Crop". Now you can visually inspect the best values for cropping.
	*'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.		*'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.
	If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.		If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.<br/>
	[[image:VLCExtendedSettings.png]]		[[image:VLCExtendedSettings.png]]

Steffen Mikkelsen: /* Find area to be cropped with VLC graphical user interface */

2013-06-22T12:18:23Z

Find area to be cropped with VLC graphical user interface

← Older revision		Revision as of 12:18, 22 June 2013
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	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		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
	==Find area to be cropped with VLC graphical user interface==		==Find area to be cropped with VLC graphical user interface==
	Play the video you want to encode. Click the "Show extended settings" icon, left to the playlist button. In the popup select "Video Effects" and "Crop". Now you can visually inspect the best values for cropping.		*Play the video you want to encode. Click the "Show extended settings" icon, left to the playlist button. In the popup select "Video Effects" and "Crop". Now you can visually inspect the best values for cropping.
	'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.		*'''Note:''' When encoding a video, the width and height needs to be divisible by 16. So the Left+Right cropped pixels should add up to a number that can be divided by 16. The same for Top+Bottom.
	If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.		If you find that right side should be cropped by 18 and left by 10. 18+10 = 28. So you neeed to either crop by 4 pixels more or 12 pixels less.
			[[image:VLCExtendedSettings.png]]

	==Find area to be cropped with mplayers cropdetect==		==Find area to be cropped with mplayers cropdetect==
	The video player ''mplayer'' has a crop-detect features. Run the video from the commandline with cropdetect:		The video player ''mplayer'' has a crop-detect features. Run the video from the commandline with cropdetect:

Steffen Mikkelsen: /* Transcoding with VLC */

2013-06-22T12:17:04Z

Transcoding with VLC

← Older revision		Revision as of 12:17, 22 June 2013
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	=Transcoding with VLC=		=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 being 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.		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.		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=		=Commands=
	Example command:		Example command: