* Steven M. Schultz on Wednesday, January 16, 2008 at 20:34:09 -0800
> On Wed, 16 Jan 2008, Christian Ebert wrote:
>> But I'd like to decode with lav2yuv, but it segfaults here on dv movs
>
> Works fine here - BUT I have seen the problem you mentioned earlier
> (symptom is that 'twos' audio isn't recognized as valid).
$ qtinfo test.mov
Type: Quicktime
1 audio tracks.
2 channels, 16 bits, sample rate 48000, length 481920 samples, compressor
twos.
Sample format: 16 bit signed.
Channel setup: Not available
Language: eng
supported.
1 video tracks.
720x576, depth 24
rate 25.000000 [25:1] constant
length 251 frames
compressor dvcp.
Native colormodel: YUV 4:2:0 planar
Interlace mode: Bottom field first
Chroma placement: PAL DV
Pixel aspect ratio: 59:54
supported.
0 text tracks.
>> What configure options do give to libquicktime? I'm asking as
>> you're on a Mac as well, even though I still have 10.4.
>
> ./configure --enable-gpl
same here
> (need that to include ffmpeg's libavcodec as I recall)
so dv decoding would actually be done with ffmpeg's libavcodec?
> You may have a corrupt or outdated .libquicktime_codecs in your
> home directory. Try removing it and then running any program
> linked to libquicktime. If .libquicktime_codecs IS recreated then
> things are setup/installed correctly and you shouldn't have any
> problems.
unfortunately they persist.
> If .libquicktime_codecs is NOT recreated
it /is/ created.
> or is empty then libquicktime can't find the *.so files
> (loadable modules/plugins) for the codecs.
>
> ls /usr/local/lib/libquicktime
>
> lqt_audiocodec.la lqt_ffmpeg.so lqt_rtjpeg.la
> lqt_audiocodec.so lqt_lame.la lqt_rtjpeg.so
> lqt_dv.la lqt_lame.so lqt_videocodec.la
> lqt_dv.so lqt_mjpeg.la lqt_videocodec.so
> lqt_faac.la lqt_mjpeg.so lqt_vorbis.la
> lqt_faac.so lqt_opendivx.la lqt_vorbis.so
> lqt_faad2.la lqt_opendivx.so lqt_x264.la
> lqt_faad2.so lqt_png.la lqt_x264.so
> lqt_ffmpeg.la lqt_png.so
same here.
> If you still have problems the libquicktime-devel list is probably
> a better place to carry on the conversation.
will do.
>> There's an Apple compressor for mpeg2?
>
> And 3gpp, H.264, AC3, MPEG-1, AAC, MPEG-4 and a bunch of others I'd
> have to lookup. "Compressor" (I'm only at Compressor2, not having
> upgraded to 3) is Apple's compression engine frontend. It's not
> sold separately but only as part of the Final Cut Studio bundle
> (a bit pricey but a fair value for the amount of software and
> documentation you get).
can't afford that atm.
thanks a lot.
c
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