- Change the aspect ratio of a film for the playback. Standard aspect ratio are : 1.33 (4:3), 1.66 (1.66:1), 1.77 (16:9) and 2.35 (2.35:1):
mplayer -aspect 2:1 ./video.avi
- Play the video with subtitles:
mplayer -sub ./subtitle_file.txt ./video.avi
- This will extract audio track no. 128, downmix the AC3 sound to PCM and write the results to
file.wav:
mplayer -vo null -hardframedrop -aid 128 -ao pcm -aofile file.wav dvd://1
- This will extract the audio, convert it to PCM and write the resulting wave file to
audio.wav:
mplayer -vo null -hardframedrop -ao pcm:file=audio.wav myvideo.avi
- Extract to
chapter.txt the chapter file of the track n°1 of the DVD:
dvdxchap -t 1 /mnt/cdrom > chapter.txt
- Show all subtitles streams:
mplayer -vo null -ao null -frames 0 -v 2 dvd://1 >&1 | grep sid
- Extract the raw subtitle stream. The
-a 0x21 option correspond to the subtitle stream’s hexadecimal number (= 0×20 + id of the stream):
tccat -i /space/st-tng/dic1/ -T 1 -L | tcextract -x ps1 -t vob -a 0x22 > subs-en
- Create a rotated copy of the
file.avi video (rotate=1 : clockwise ; rotate=2 : anti-clockwise):
mencoder -vop rotate=2 -oac pcm -ovc lavc ./source.avi -o ./dest.avi
- Preview a video composed of all jpeg files from the current folder at 15fps (mplayer only support jpeg, png, tga and sgi formats):
mplayer "mf://*.jpg" -mf fps=15
- Create a 15fps video from all jpeg files of the current folder:
mencoder "mf://*.jpg" -mf fps=15 -ovc lavc -o ./dest.avi
- Encode a SVCD to AVI file:
mencoder -oac lavc -ovc lavc vcd://1 -o ./svcd.avi
- Transcode video to raw format (be carefull: usually the output video got annoying audio delay):
mencoder -oac pcm -ovc raw -ofps 25 -noskip ./video.wmv -o ./video.avi
- Encode a video using the default mpeg4 codec at 400 kbps for video and mp3 codec at constant 32 kbps bitrate for audio:
mencoder -oac mp3lame -lameopts cbr:preset=32 -ovc lavc -lavcopts vbitrate=400 in.avi -o out.avi
- Enhance the sharpness of the video:
mplayer video.avi -vf smartblur=.6:-.5:0,unsharp=l5x5:.8:c5x5:.4
- Merge multiple video into one:
avimerge -i part1.avi part2.avi -o big-file.avi
- Cut a video to keep the first 5.4 seconds:
mencoder big-file.avi -ss 0 -endpos 5.4 -ovc copy -oac copy -o cutted.avi
- Cut a video to keep everything exept the first 5.4 seconds:
mencoder big-file.avi -ss 5.4 -ovc copy -oac copy -o cutted.avi
- Show all
mplayer filter list:
mplayer -vf help
- Get help of a particular filter (
eq2 in this example):
mplayer -vf eq2=help
- Here is the filter I use to light up a video taken in the dark with my cheap camera. Of course it add noise but thanks to this we can distinguish shapes in the dark.
mencoder -vf eq2=1.61:1.95:0.54:2.43 -oac pcm -ovc lavc video.avi -o bright-vid.avi
- And this is the command to preview the result of the filter used above:
mplayer video.avi -vf eq2=1.61:1.95:0.54:2.43
- This is how I convert raw videos taken with my digital camera into ISO standard MPEG-4 (DivX 5, XVID compatible) videos [to encode in grayscale, add
:gray option to -lavcopts]:
mencoder source.avi -ovc lavc -oac lavc -ffourcc DX50 -lavcopts vcodec=mpeg4:vbitrate=400:v4mv:mbd=2:trell:autoaspect:dia=2:acodec=mp3:abitrate=32:vpass=1 -vf hqdn3d -o output.avi
mencoder source.avi -ovc lavc -oac lavc -ffourcc DX50 -lavcopts vcodec=mpeg4:vbitrate=400:v4mv:mbd=2:trell:autoaspect:dia=2:acodec=mp3:abitrate=32:vpass=2 -vf hqdn3d -o output.avi
- Play all videos of the current folder fullscreen at 4x speed with 50% more brightness:
mplayer -speed 4 -brightness 50 -fs ./*.avi
- Extract audio stream from a video:
mplayer -dumpaudio -dumpfile audio.ac3 video_source.mpg
- Here are some commands to get informations about the nature of a video:
mplayer -frames 0 -identify ./video.avi
tcprobe -i ./video.avi
ffmpeg -i ./video.avi
file ./video.avi
- Test XV video driver output via gstreamer v0.10:
gst-launch-0.10 videotestsrc ! xvimagesink
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To extract MP3 audio from an AVI or video file:
I’d like to convert a set of png and a single mp3 file into an movie file (avi, mpeg or other) is there a way to do this?
Could I bother you to email me the response at
menco.20.zdux0012 (at) xoxy.net ?
Thanks for your time!!
Yes you can do it using Adobe Premier (LOL)….
I tried to contact that anonymous guy asking him why he was so secret, but he never answered me…
About his technical question: yes, you can do that and it’s pretty easy thanks to ManDVD, a GUI tool to build slideshows.
I want to change aspect ratio of video in Linux .. How to do so ????
Take screenshots:
s= one shot,S= start taking shotsThanks a lot for your great website !!!
I am working on this for several nights with no answer
I am trying to convert mov(audio+text subtitle) to 3gp (video)
I am using this command ( I compiled the
ffmpeg,libamr-nb,libamr-wb,libfaacpackages):but I cannot see the subtitles , not in the PC and not in the mobile.
Maybe I need to convert the mov to 3gp movie stream ( how do i do it ? )? If you could please help me – i will be more than grateful !!! Thanks u so much !!! I am desperate !!!
Jor
===================================== Input file ===================================== [user@comuter big_samples]$ ffmpeg -i input.mov FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-libamr-nb --enable-libamr-wb --enable-libfaac --enable-decoder=h263 --enable-encoder=h263 --enable-gpl --enable-nonfree libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on May 19 2009 06:11:19, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33) [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8920290]multiple edit list entries, a/v desync might occur, patch welcome Input #0, mov,mp4,m4a,3gp,3g2,mj2, from input.mov': Duration: 00:04:37.07, start: 0.000000, bitrate: 1412 kb/s Stream #0.0(eng): Audio: pcm_s16be, 44100 Hz, stereo, s16, 1411 kb/s Stream #0.1(eng): Subtitle: text / 0x74786574 At least one output file must be specified ===================================== Output file ===================================== [user@comuter big_samples]$ ffmpeg -i output_sub.3gp FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-libamr-nb --enable-libamr-wb --enable-libfaac --enable-decoder=h263 --enable-encoder=h263 --enable-gpl --enable-nonfree libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on May 19 2009 06:11:19, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_sub.3gp': Duration: 00:01:01.66, start: 0.000000, bitrate: 15 kb/s Stream #0.0(eng): Audio: libamr_nb, 8000 Hz, mono, s16 Stream #0.1(eng): Subtitle: tx3g / 0x67337874 At least one output file must be specified ===================================== Other 3gp video example that works on my mobile ===================================== [user@comuter big_samples]$ ffmpeg -i myphone.3gp FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --enable-libamr-nb --enable-libamr-wb --enable-libfaac --enable-decoder=h263 --enable-encoder=h263 --enable-gpl --enable-nonfree libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 built on May 19 2009 06:11:19, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'myphone.3gp': Duration: 00:00:06.80, start: 0.000000, bitrate: 77 kb/s Stream #0.0(eng): Video: h263, yuv420p, 176x144 [PAR 12:11 DAR 4:3], 29.97 tbr, 15750 tbn, 29.97 tbc Stream #0.1(eng): Audio: libamr_nb, 8000 Hz, mono, s16 At least one output file must be specifiedMerge multiple video into one with Mencoder: