On Sun, Dec 28, 2003 at 06:51:25AM +0100, Bernhard Praschinger wrote:
> Hallo
>
> > While transcoding an AVI file into SVCD using transcode, toolame,
> > mpeg2enc and mplex, I expected two output files from the
> > multiplexer, but have got just one:
> What mjpegtools version do you use ?
mjpegtools 1.6.1.92
> > $ transcode -i rudolph.avi -y mpeg2enc,null \
> > -j -4,0,-4,0 -Z 480x480,fast -V --export_asr 2 \
> > -F '5,-s -B 284 -V 230 -S 800 -4 2 -2 1 -q 5 -K hi-res -R 0' \
> > -w 2800 -o rudolph.cd
[...]
> If you have some output like that:
> ....
> INFO: [yuvscaler] Frame number 5998
> INFO: [mpeg2enc] Frame end 1875 P quant=7.42 total act=363607.13333
> ....
[...]
> Could you also check if you get something like that when mpeg2enc
> starts:
> INFO: [mpeg2enc] New Sequence every 30 Mbytes
Unfortunatly transcode added the option "-v 0" to the call of mpeg2enc,
keeping it from being verbose. No messages from it.
> > $ mplex -f 5 -r 3084 -V -o rudolph.cd.%d.mpg rudolph.cd.m2v rudolph.cd.mp2
> > [...]
> As far as I can tell the commands you have used are correct, and should
> work.
>
> > Notice that I have specified the option "-S 800" to mpeg2enc,
> > hoping that a sequence split is inserted into the output video
> > stream and the multiplexer recognises this split and starts a
> > new multiplexed output file when encountering it.
> If you have a mjpeg encoded AVI please try to encode it using lav2yuv |
> ... | mpeg2enc.
> If that works I'd think that trancode is messing up some options,
I do not have.
> You could also try to use mplayer (-vo yuv4mpeg and a fifo file) to
> decode the stream to a yuv format mpeg2enc understands. And try to
> encode it than.
I have repeated the encoding process, with the same results.
The movie is a 544x400 75 min anime. First I tried to fit it
into an unique SVCD with good quality. I have tried many
combinations of -q (6,7,8) and encoding matrixes (default,
tmpgenc,kvcd,customized), but without getting a result that
was suitable for me. Then I decided to go for 2 SVCDs and
tried the above transcoding. As I could not understand and
solve the described problem, and there was still room for
better quality in the 2 SVCDs set, I rencoded with the
command
$ transcode -i rudolph.avi -y mpeg2enc,null \
-j -4,0,-4,0 -Z 480x480,fast -V --export_asr 2 \
-F '5,-s -B 288 -V 230 -S 800 -4 2 -2 1 -q 4 -K hi-res -R 0' \
-w 3000 -o rudolph.cd \
-a 0 -b 224,0,5 --a52_dolby_off -J astat=rudolph.cd.scl
This time there was no problem, and I could complete the whole
process, finishing with the 2 SVCDs.
Unfortunatly I do not have the log file of the previous erroneous
run, so that it could be further investigate.
Thanks.
Romildo
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