Monthly Archive for November, 2006

Usefull Commands: CVS

Published
by
kev
1 year, 9 months ago
in English
. 0 Comments
  • Download to your machine the kdetoys module from the KDE CVS:

    cvs -d:pserver:anonymous@anoncvs.kde.org:/home/kde checkout kdetoys

  • Get the 22/09/2005 version of the kdetoys module source code:

    cvs -d:pserver:anonymous@anoncvs.kde.org:/home/kde co -D '22 Sep 2005' kdetoys

  • -D option used below is sticky. Use the following command when you no longer want to keep the dated version:

    cvs up -A kdetoys

New CD Jewel Case Template ready to Print !

Published
by
kev
1 year, 9 months ago
in Uncategorized
. 0 Comments

cd-template-jewel-case-back-print-margin.pngI’ve added two new documents to my CD Templates for Jewel Case in SVG. The new versions are a leaflet and a back cover with margin markers only. This version is designed for final printing: thanks to markers it’s easy to cut and fold the paper with high precision.

Published under a Creative Commons Attribution licence, SVG files are available in my document repository.

Diva for Mandriva 2007: latest SVN revision.

Published
by
kev
1 year, 9 months ago
in Uncategorized
. 0 Comments

diva-002-trunk.pngI’ve compiled a new RPM of Diva for Mandriva 2007. This RPM is the cutting-edge version of Diva based on the latest SVN revision of the project (r315). You can find it in my repository.

Diva is based on gstreamer, so please install all gstreamer0.10-* RPMs first. Because this version is still an alpha and a developper version, it is subject of numerous bugs and instability. So please, don’t report me bugs, I’m not a Diva developper !

Wordpress to e107 v0.4: now with Comments Import

Published
by
kev
1 year, 9 months ago
in Uncategorized
. 2 Comments

The 4th alpha version of my script to import e107 data to Wordpress is out ! This version fix lots of bugs, especially due to non-escaped SQL queries, and now import news comments and link them to users.

Usefull Commands: Video

Published
by
kev
1 year, 10 months ago
in English
. 7 Comments
  • 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

  • Test XV video driver output via gstreamer v0.10:

    gst-launch-0.10 videotestsrc ! xvimagesink