Difference between revisions of "Mencoder"
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| + | '''Hint:''' all video filters (-vf option) can be previewed using mplayer before starting the actual encoding procedure. | ||
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== DV to MPEG4 with deinterlacing == | == DV to MPEG4 with deinterlacing == | ||
Encode a raw DV file from a digital video camera to MPEG4 video with mp3 audio. | Encode a raw DV file from a digital video camera to MPEG4 video with mp3 audio. | ||
<nowiki>mencoder input.dv -vf pp=lb -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=2000 -oac mp3lame -lameopts vbr=3 -o output.avi</nowiki> | <nowiki>mencoder input.dv -vf pp=lb -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=2000 -oac mp3lame -lameopts vbr=3 -o output.avi</nowiki> | ||
Adjust ''vbitrate'' to your needs. ''vbitrate=2000'' produces a quite good quality at a small filesize for videos in TV resolution. | Adjust ''vbitrate'' to your needs. ''vbitrate=2000'' produces a quite good quality at a small filesize for videos in TV resolution. | ||
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== Scaling and MPEG4 encoding == | == Scaling and MPEG4 encoding == | ||
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This scales any video that ''mencoder'' is able to read to a 480p video (480 pixels high). | This scales any video that ''mencoder'' is able to read to a 480p video (480 pixels high). | ||
<nowiki>mencoder input.mov -vf scale=-3:480 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=3000 -oac mp3lame -lameopts vbr=3 -o output.avi</nowiki> | <nowiki>mencoder input.mov -vf scale=-3:480 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=3000 -oac mp3lame -lameopts vbr=3 -o output.avi</nowiki> | ||
| − | '-vf scale=-3:' calculates the with of the video using the original aspect ratio and the desired height. | + | '''-vf scale=-3:''' calculates the with of the video using the original aspect ratio and the desired height. |
Revision as of 10:01, 14 May 2012
Hint: all video filters (-vf option) can be previewed using mplayer before starting the actual encoding procedure.
DV to MPEG4 with deinterlacing
Encode a raw DV file from a digital video camera to MPEG4 video with mp3 audio.
mencoder input.dv -vf pp=lb -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=2000 -oac mp3lame -lameopts vbr=3 -o output.avi
Adjust vbitrate to your needs. vbitrate=2000 produces a quite good quality at a small filesize for videos in TV resolution.
Scaling and MPEG4 encoding
Scale a high resolution video down to a lower resolution, preserving the aspect ratio. MPEG4 encoding options as usual. This scales any video that mencoder is able to read to a 480p video (480 pixels high).
mencoder input.mov -vf scale=-3:480 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=3000 -oac mp3lame -lameopts vbr=3 -o output.avi
-vf scale=-3: calculates the with of the video using the original aspect ratio and the desired height.
