Re: [gentoo-user] transcode convertion

[Zac Medico]

Luigi Pinna wrote:
> Hello!
> I have a problem to convert a video.
> I need to use it in a DVD.
> I create an animation with GIMP and exported as .fli file and after with
> mencoder as a mpeg file but it was no right for dvdauthor.
> Now I tried to convert it with transcode (that has a DVD option -F 8)
> but it doesn't find the plug-in.
> This is the output:
>
> transcode -F 8 -y mpeg -i intro.mpeg -o prova
> transcode v0.6.14 (C) 2001-2003 Thomas Oestreich, 2003-2004 T.
> Bitterberg
> [transcode] (probe) suggested AV correction -D 0 (0 ms) | AV 0 ms | 0 ms
> [transcode] auto-probing source intro.mpeg (ok)
> [transcode] V: import format    | MPEG-2  (V=vob|A=vob)
> [transcode] V: AV demux/sync    | (1) sync AV at initial MPEG sequence
> [transcode] V: import frame     | 720x576  1.25:1  encoded @ 4:3
> [transcode] V: bits/pixel       | 0.174
> [transcode] V: decoding fps,frc | 25.000,3
> [transcode] V: Y'CbCr           | YV12/I420
> [transcode] A: import format    | 0x50    MPEG layer-2 [44100,16,2]  128
> kbps
> [transcode] A: export format    | 0x50    MPEG layer-2 [44100,16,2]  128
> kbps
> [transcode] V: encoding fps,frc | 25.000,3
> [transcode] A: bytes per frame  | 7056 (7056.000000)
> [transcode] A: adjustment       | 0@1000
> tc_memcpy: using libc for memcpy
> [transcode] V: video buffer     | 10 @ 720x576
> [import_vob.so] v0.6.0 (2003-10-02) (video) MPEG-2 | (audio)
> MPEG/AC3/PCM | (subtitle)
> [transcode] warning : /usr/lib64/transcode/export_mpeg.so: cannot open
> shared object file: No such file or directory
> [transcode] warning : (dl_loader.c) loading
> "/usr/lib64/transcode/export_mpeg.so" failed
> [transcode] warning : (encoder.c) loading audio export module failed
> [transcode] warning : failed to init export modules
> [transcode] critical: plug-in initialization failed
>
> This is the transcode's FLAGS:
> [ebuild   R   ] media-video/transcode-0.6.14-r2  (-3dnow) +X +a52
> (-altivec) +avi (-divx4linux) +dv +dvdread +encode +fame +gtk
> +imagemagick +jpeg +lzo +mjpeg (-mmx) +mpeg -network +ogg (-pvm)
> +quicktime +sdl (-sse) (-sse2) +theora +truetype +v4l +vorbis +xml2
> +xvid
> What can I do?
> Or what can I do to export from GIMP in the format?
> Thanks,
> Luigi
>

I'm not sure about that specific library problem you're having but I may have a solution for you.  I've noticed that dvdauthor is quite picky about the format of the mpeg files that you give it.  In my case, I used ffmpeg to convert an avi to mpg but then dvdauthor did not like it.  I found a workaround though.  I used tccat and tcextract to demux the mpg into separate audio/video files and then I remuxed them with mplex.

Here is the relevant section from my script:

set -x -e
ffmpeg -i "${INPUT_AVI_FILE}" -vcodec mpeg2video -b 1500 -r ntsc -s 352x240 -aspect 4:3 -acodec mp2 -ar 48000 -ac 1 "${TEMP_VOB_FILE}"
tccat -i "${TEMP_VOB_FILE}" | tcextract -x mpeg2 -t vob -a video_track > "${TEMP_M2V_FILE}"
tccat -i "${TEMP_VOB_FILE}" | tcextract -x mp2 -t vob -a audio_track > "${TEMP_MPA_FILE}"
rm -f "${TEMP_VOB_FILE}"
mplex -f 8 -o "${OUTPUT_MPG_FILE}" "${TEMP_M2V_FILE}" "${TEM	ffmpeg -i "${INPUT_AVI_FILE}" -vcodec mpeg2video -b 1500 -r ntsc -s 352x240 -aspect 4:3 -acodec mp2 -ar 48000 -ac 1 "${TEMP_VOB_FILE}"
tccat -i "${TEMP_VOB_FILE}" | tcextract -x mpeg2 -t vob -a video_track > "${TEMP_M2V_FILE}"
tccat -i "${TEMP_VOB_FILE}" | tcextract -x mp2 -t vob -a audio_track > "${TEMP_MPA_FILE}"
rm "${TEMP_VOB_FILE}"
mplex -f 8 -o "${OUTPUT_MPG_FILE}" "${TEMP_M2V_FILE}" "${TEMP_MPA_FILE}"

It's not really elegant but it worked.  Note that I used mp2 because I ran into some troubles with some avi files and the ac3 encoder.  However, ac3 worked fine with most files.

Zac
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