Difference between revisions of "Mplayer"
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== Flash Video (FLV) to wav or mp3 == | == Flash Video (FLV) to wav or mp3 == | ||
| − | + | It can be done in two easy steps. First extract the audio track using mplayer, then encode the wav-file to an mp3 using lame. The ''-novideo'' option makes this operation faster. | |
<nowiki>mplayer -ao pcm:file=sound.wav -novideo flashvideo.flv | <nowiki>mplayer -ao pcm:file=sound.wav -novideo flashvideo.flv | ||
lame sound.wav sound.mp3</nowiki> | lame sound.wav sound.mp3</nowiki> | ||
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This takes a 80x80px area, starting from (x,y)=(100,10), scales it to 50x50px and writes a PNG file for each frame. The result is a directory full of PNGs - a PNG sequence. | This takes a 80x80px area, starting from (x,y)=(100,10), scales it to 50x50px and writes a PNG file for each frame. The result is a directory full of PNGs - a PNG sequence. | ||
| + | Or using FFmpeg: | ||
| + | <nowiki>ffmpeg -i video-file.avi -vcodec png %05d.png</nowiki> | ||
| + | Super fast! | ||
== Play PNG sequence == | == Play PNG sequence == | ||
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Add a scaling video filter for very small images. ''Software scaler 4'' is useful to observe each pixel without blurring. | Add a scaling video filter for very small images. ''Software scaler 4'' is useful to observe each pixel without blurring. | ||
<nowiki>mplayer mf:// -mf type=png -vf scale=320:240 -fps 25 | <nowiki>mplayer mf:// -mf type=png -vf scale=320:240 -fps 25 | ||
| − | mplayer mf:// -mf type=png -vf scale=320:240 -sws 4 -fps 25 | + | mplayer mf:// -mf type=png -vf scale=320:240 -sws 4 -fps 25</nowiki> |
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| + | |||
| + | == Deinterlacing Filter == | ||
| + | Here is a great overview with examples of mplayer´s deinterlacing filters: [http://guru.multimedia.cx/deinterlacing-filters/ link] | ||
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| + | == Play raw video data (RGB24 format)== | ||
| + | Play real raw data - binary files with RGB values for each pixel, 3 bytes per pixel, no header. At least the videos width and height must be entered - for example: | ||
| + | <nowiki>mplayer -demuxer rawvideo -rawvideo w=85:h=48:format=rgb24 test.raw</nowiki> | ||
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| + | |||
| + | == Play a Tuxbox stream == | ||
| + | <nowiki>mplayer http://dbox:31339/$(printf '%04x,' $(GET http://dbox/control/zapto?getpids) ) | ||
| + | |||
| + | Fullscreen, de-interlaced and with cache: | ||
| + | mplayer -cache 1024 -vf pp=lb -fs http://dbox:31339/$(printf '%04x,' $(GET http://dbox/control/zapto?getpids) ) | ||
| + | </nowiki> | ||
Latest revision as of 19:32, 29 August 2013
Contents
Flash Video (FLV) to wav or mp3
It can be done in two easy steps. First extract the audio track using mplayer, then encode the wav-file to an mp3 using lame. The -novideo option makes this operation faster.
mplayer -ao pcm:file=sound.wav -novideo flashvideo.flv lame sound.wav sound.mp3
This can be used to get playable mp3 files from downloaded Youtube videos. Possibly there is a better way with mencoder?
Video to PNG files
Writing a PNG file for each frame in the Video file. PNG files will be written to the current directory.
mplayer -nosound -benchmark -vo png:z=0 /path/to/video.avi
Output files are named 00000001.png, 00000002.png, 00000003.png, ...
It might be useful to crop and/or scale the video before writing PNGs:
mplayer -nosound -benchmark /path/to/video.avi -vf crop=100:10:80:80,scale=50:50 -vo png:z=0
This takes a 80x80px area, starting from (x,y)=(100,10), scales it to 50x50px and writes a PNG file for each frame. The result is a directory full of PNGs - a PNG sequence.
Or using FFmpeg:
ffmpeg -i video-file.avi -vcodec png %05d.png
Super fast!
Play PNG sequence
Mplayer is able to play PNG sequences. All PNGs must have the same geometry. The framerate ist defined by the -fps option. The command must be executed in the directory of the PNG files.
mplayer mf:// type=png -fps 25
Add a scaling video filter for very small images. Software scaler 4 is useful to observe each pixel without blurring.
mplayer mf:// -mf type=png -vf scale=320:240 -fps 25 mplayer mf:// -mf type=png -vf scale=320:240 -sws 4 -fps 25
Deinterlacing Filter
Here is a great overview with examples of mplayer´s deinterlacing filters: link
Play raw video data (RGB24 format)
Play real raw data - binary files with RGB values for each pixel, 3 bytes per pixel, no header. At least the videos width and height must be entered - for example:
mplayer -demuxer rawvideo -rawvideo w=85:h=48:format=rgb24 test.raw
Play a Tuxbox stream
mplayer http://dbox:31339/$(printf '%04x,' $(GET http://dbox/control/zapto?getpids) ) Fullscreen, de-interlaced and with cache: mplayer -cache 1024 -vf pp=lb -fs http://dbox:31339/$(printf '%04x,' $(GET http://dbox/control/zapto?getpids) )
