30 Dec 2008
woot! It works! Youtube videos on a $30 media player!
The AMV format was new to me; I found a HowToConvertToAMV recipe, but that lacks support for mp4a, the audio codec used by youtube (at least the videos I tested).
Then I found adding --enable-faad to ffmpeg (don't forget to make distclean) and presto:
$ clive
'http://www.youtube.com/watch?v=3pYN42YyWp0&feature=related'
clive 0.4.19 20080722 [Linux]
http://www.youtube.com/watch?v=3pYN42YyWp0&feature=related&fmt=
100%
BrianReganWalkieTalkie.mp4
2.6MB
=> 1 (2.6MB), failed: 0, skipped: 0.
BrianReganWalkieTalkie.mp4 100% 2.6MB
109.2KB/s 00:00:24
$ ~/src/amv-codec-tools/AMVmuxer/ffmpeg/ffmpeg -i
BrianReganWalkieTalkie.mp4 -f amv -s 128x90 -r 16 -ac 1 -ar
22050 -qmin 3 -qmax 3 BrianReganWalkieTalkie.amv
FFmpeg version SVN-r589, Copyright (c) 2000-2007 Fabrice
Bellard, et al.
configuration: --enable-gpl --enable-libfaad
libavutil version: 49.5.0
libavcodec version: 51.47.1
libavformat version: 51.17.0
built on Dec 30 2008 12:07:41, gcc: 4.3.2
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'BrianReganWalkieTalkie.mp4':
Duration: 00:01:13.7, start: 0.000000, bitrate: 291 kb/s
Stream #0.0(und): Audio: mpeg4aac, 44100 Hz, stereo
Stream #0.1(und): Video: h264, yuv420p, 320x240 [PAR 0:1
DAR 0:1], 30.00 fps(r)
PIX_FMT_YUV420P will be used as an intermediate format for
rescaling
Output #0, amv, to 'BrianReganWalkieTalkie.amv':
Stream #0.0(und): Video: amv, yuvj420p, 128x90 [PAR 0:1
DAR 0:1], q=3-3, 200 kb/s, 16.00 fps(c)
Stream #0.1(und): Audio: adpcm_ima_amv, 22050 Hz, mono,
64 kb/s
Stream mapping:
Stream #0.1 -> #0.0
Stream #0.0 -> #0.1
Press [q] to stop encoding
frame= 1172 fps=343 q=0.0 Lsize= 3878kB time=73.2
bitrate= 433.7kbits/s
video:3062kB audio:802kB global headers:0kB muxing overhead
0.376436%
Merry Christmas, Kyle!
It's not as nicely packaged as the Mac app Justin uses with his ipod, but it's cheaper and more free (I'm not sure if it's quite open source; I don't know the license details of the AMV code.)