*short version:*
*
*
I want to disable probing for streams which arent video or audio.
is there a way to do it?
*long version:*
*
*
I'm using libav to demux TS from UDP. sometimes the TS source has streams
that are not understood by libav.
the problem is that libav probes these streams, and that might take a long
time [we're reading from UDP, data flows in real-time] sometimes 10-20
seconds!
all this for a stream I don't really care about and would rather just skip.
here's an example
avprobe version v0.7-749-g2214191, Copyright (c) 2007-2011 the Libav
developers
built on Aug 30 2011 12:37:07 with gcc 4.5.2
configuration: --enable-runtime-cpudetect --enable-cross-compile
--enable-w32threads --prefix=/usr --cross-prefix=mingw32- --arch=i686
--targe
hared --enable-avisynth --enable-libvpx
libavutil51. 9. 0 / 51. 9. 0
libavcodec 53. 9. 0 / 53. 9. 0
libavformat 53. 5. 0 / 53. 5. 0
libavdevice 53. 0. 0 / 53. 0. 0
libavfilter 2. 4. 0 / 2. 4. 0
libswscale2. 0. 0 / 2. 0. 0
libpostproc 52. 0. 0 / 52. 0. 0
Input #0, mpegts, from 'udp://239.5.5.5:10201':
Duration: 00:07:39.42, start: 42291.915289, bitrate: 4095 kb/s
Program 725
Stream #0.0[0x1005]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR
64:45 DAR 16:9], 9000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0.1[0x1006](ger): Audio: mp2, 48000 Hz, stereo, s16, 256 kb/s
(clean effects)
Stream #0.2[0x1008](deu): Subtitle: [6][0][0][0] / 0x0006
Stream #0.3[0x1009]: Data: [6][0][0][0] / 0x0006
Unsupported codec with id 94215 for input stream 2
Unsupported codec with id 102400 for input stream 3
in this case, the unwanted stream is #3.
to see that libav is mostly busy with probing the stream I have no use for,
I ran avprobe with with -loglevel debug
avprobe version v0.7-749-g2214191, Copyright (c) 2007-2011 the Libav
developers
built on Aug 30 2011 12:37:07 with gcc 4.5.2
configuration: --enable-runtime-cpudetect --enable-cross-compile
--enable-w32threads --prefix=/usr --cross-prefix=mingw32- --arch=i686
--target-os=mingw32 --sysroot=/usr/mingw32/ --enable-gpl --enable-librtmp
--enable-libx264 --enable-libmp3lame --enable-libvorbis
--enable-memalign-hack --enable-shared --enable-avisynth --enable-libvpx
libavutil51. 9. 0 / 51. 9. 0
libavcodec 53. 9. 0 / 53. 9. 0
libavformat 53. 5. 0 / 53. 5. 0
libavdevice 53. 0. 0 / 53. 0. 0
libavfilter 2. 4. 0 / 2. 4. 0
libswscale2. 0. 0 / 2. 0. 0
libpostproc 52. 0. 0 / 52. 0. 0
[mpegts @ 007ff420] Probed with size=2048 and score=100
[mpegts @ 007ff420] stream=0 stream_type=2 pid=1005 prog_reg_desc=
[mpegts @ 007ff420] stream=1 stream_type=4 pid=1006 prog_reg_desc=
[mpegts @ 007ff420] stream=2 stream_type=6 pid=1008 prog_reg_desc=
[mpegts @ 007ff420] stream=3 stream_type=6 pid=1009 prog_reg_desc=
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420] probing stream 3
[mpegts @ 007ff420]
