[vlc] Bad quality after transcoding
Christian Cikryt
christian.cikryt at fu-berlin.de
Fri Dec 4 11:31:25 CET 2009
Hi,
I've encoded an avi-file, which was originally encoded with xvid and
mpga, with several codecs and saved in a file. In fact, I tried a few
diffent input files. However, the result is always terrible.
For example: http://img189.imageshack.us/img189/7049/shotv.jpg
This example was transcoded using the following command:
vlc -I dummy test.avi --sout
"#transcode{vcodec=h264,vb=1200,acodec=mp3,ab=128,channels=6}:standard{mux=ts,dst=\"test.ts\",access=file}"--stop-time=30
This is some of the output in my terminal:
[0x9b8e6c8] main input error:
ES_OUT_RESET_PCR called [0x9b8e6c8] main input error:
ES_OUT_SET_(GROUP_)PCR is called too late, increasing pts_delay to 651
ms [0x9b8e6c8] main input error: ES_OUT_RESET_PCR called [0x9b8e6c8]
main input error: ES_OUT_SET_(GROUP_)PCR is called too late,
increasing pts_delay to 657 ms [0x9b8e6c8] main input error:
ES_OUT_RESET_PCR called [0x9b8e6c8] main input error:
ES_OUT_SET_(GROUP_)PCR is called too late, increasing pts_delay to 706
ms [0x9b8e6c8] main input error: ES_OUT_RESET_PCR called header damaged
I also tried several default profiles from the gui, such as "video
-h264 +acc(ts)", "video - mpeg4 + aac(mp4)", "video -theora + vorbis
(ogg)", but the quality is still very bad.
I'm running vlc 1.0.3 (FFmpeg version 0.5) on Arch Linux and the config
should be in its default state. A friend of mine, who has the same
linux and vlc version, can encode the file without any problems.
I myself can encode the same video with good results using, for example:
ffmpeg -i test.avi -b 800k -vcodec libx264 -ab 128k -acodec libmp3lame
test.mkv
Any hints are very appreciated. If you need
more information or log files, just ask.
Thanks in advance,
Christian Cikryt
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