Video Capture

FLASH .swf are simpler than .flv.

Possible tools
    recordmydesktop:  Great man page.  Only does format .ogv.
      Get screen id with:
          xwininfo | awk '/Window id:/ {print $4}'
          then click on the target window with mouse (See recordmydesktop man).
      Window capture includes borders and scroll bar, but not title bar.
          recordmydesktop -windowid 0x1200008 -o squat.ogv -fps 10 -channels 1 [--no-sound] [--overwrite]
           (consider -v_bitrate 430000, but may just be bigggger than default
           of 45k).
          Might as well work with stereo even though mixer records mono,
          since .ogv will deliver output in stereo.
    xvidcap:  Does .avi format, but won't work for me, and can't target a
     Window.
    ucview:  SUCKS!!!
    .ogv = Ogg-Theora-Vorbis (aka Theora)
    ffmpeg -i file.ogv file.avi
      (See http://howto-pages.org/ffmpeg )

    pyvnc2swf (Phython port of vnc2swf)

    Kdenlive

    mjpegtools can generate mpegs from series of jpegs (jpeg2yuv)

    Try Google Video instead of Youtube.
    See http://www.tizag.com/htmlT/htmlvideocodes.php
    Goolg FlashVars:  http://muzso.hu/node/3169

Can't figure out how to "replace" an audio track with ffmpeg.
Can do it with mencoder, but mencoder doesn't support .ogv (or .mp3 directly):
 mencoder cap.avi -o captst.avi -ovc copy -oac copy -audiofile /tmp/audacity.mp3

ffmpeg:  Really need to know the streams in files.  Specify input streams like
 -map inFileNum:inFileTracl.
IMPORTANT!!!  To prevent video quality from degrading, use first switch of:
    -sameq
(*.ogv have a useless stream 0).
Run:  "ffmpeg -i input.file" to list streams in the file.
MAPPINGS are used to alway specify the source of the Vid then the source of
 the Audio.  (Probably depends on output format, but this is true for my
 output formats).
List available encoders with "ffmpeg -formats".  It shows which are
 available for encoding and which for decoding.  I guess D = Decode, E = encode.

ffmpeg -i cap.ogv -acodec pcm_s16le cap.wav  # Extract audio track
normalize cap.wav   # In-place normalize ampiltude
ffmpeg -i cap.ogv -i cap.wav -map 0:1 -map 1:0 -vcodec mpeg4 -acodec mp2 capbad.avi

# FROM .ogv -> .ogg
ffmpeg -i cap.ogv -acodec pcm_s16le cap.wav  # Extract audio track
ffmpeg -i term3b.ogv -acodec vorbis -ab 128k -vn term3b_raw.ogg

(mencoder /tmp/FILE0001.MOV -ovc lavc -vf scale=640:480 -oac lavc -o morgpract.avi)  Better to crop than screw up aspect ratio.  Top trim right 80 pixels:
mencoder /tmp/FILE0001.MOV -ovc lavc -vf crop=640:480:0:0 -oac lavc -o morgpract.avi
(Crop specifies w:h:x:y of rectangle to KEEP).
# This works much much better for Aiptek .MOVs.
Do not know how to get non-AVI Mpeg4s from mencoder!!!!!


DOWNSIZING
ffmpeg -i squat.avi -s qvga squat-downsized.avi



Konsole
kde-backport:
    Change font to the size-10 variant (from 11).
    Then reset size again to vt100.
    This makes video output of 592x384.
kde3-base:
    Change font to the size-9 variant (from 10).
    Then reset size again to vt100.
    This makes video output of 594x433
      (xwininfo -geometry + 2*Abs.-upper-left-X + Abs.-upper-left-X+-Y).
Convert .ogv to .swf and stagger the a/v.  (itsoffset in other position with
+ offset does not work as documented...  this here is actually not working
as documented, since it should effect all remaining input files).

    ffmpeg -itsoffset -00:00:0.8 -i sc1.ogv -i tmp.ogv -map 0:1 -map 0:2  sc1.swf
Need to use Kdenlive to add titles and transition, so final output will be
640x480 (Square NTSC).

For Kivio, set Page format to Screen.  When do export, set DPI to 96.
This makes for 549 x 469 output.



TO DETERMINE REQUIRED STAGGERING, run "mplayer testoutput.x" and use
+/- to move the audio start time.  http://howto-pages.org/ffmpeg/

(Tried exporting to med. qual 320x240 .flv.  See how that goes...


ffmpeg mp3 encoder:  libmp3lame

moviemk.exe
    640x480 30 fps Export formats
        HQ L 30 fps (var. rate)
        Local playback 2.1 Mbps
        ... 1.5 Mbps
        LAN 1.0 Mbps
        *LAN 768 Kbps

To pull Vorbis audio out of an .ogv file, use
   -i infile.ogv -acodec vorbis -vn outfile.ogg


CONVERTING AFRICA ACTION'S .mpg FILES TO .flv.  Adds a little blur.  Reduce 50%.
ffmpeg -y -sameq -i m2u00064.mpg -pass 1 -an m2-nomd.flv
ffmpeg -y -sameq -i m2u00064.mpg -b 1000k -ac 2 -ar 22050 -pass 2 m2-nomd.flv
yamdi -i m2-nomd.flv -o m2.flv