[FFmpeg-user] correct syntax for using the pan filter

[jacob s]

ffmpeg started on 2012-03-19 at 21:36:53
Report written to "ffmpeg-20120319-213653.log"
Command line:
ffmpeg.exe -rtbufsize 100000000 -f dshow -i
"video=screen-capture-recorder:audio=Stereo Mix (IDT High Definition"
-vcodec libx264 -preset ultrafast -tune zerolatency -r 10 -async 1 -ab 32k
-ar 22050 -bsf:v h264_mp4toannexb -b 614400 -vf "pan=stereo:c1=c1" -f
mpegts udp://192.168.5.215:48551 -report
ffmpeg version N-38292-ga4c22e3 Copyright (c) 2000-2012 the FFmpeg
developers
  built on Feb 27 2012 14:50:39 with gcc 4.6.2
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype
--enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp
--enable-libschroedinger --enable-libspeex --enable-libtheora
--enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
  libavutil      51. 41.100 / 51. 41.100
  libavcodec     54.  4.100 / 54.  4.100
  libavformat    54.  1.100 / 54.  1.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 62.101 /  2. 62.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0.  7.100 /  0.  7.100
  libpostproc    52.  0.100 / 52.  0.100
[dshow @ 01F4E4E0] Probe buffer size limit 5000000 reached
[dshow @ 01F4E4E0] Estimating duration from bitrate, this may be inaccurate
Input #0, dshow, from 'video=screen-capture-recorder:audio=Stereo Mix (IDT
High Definition':
  Duration: N/A, start: 560775.791000, bitrate: 1411 kb/s
    Stream #0:0, 1, 1/10000000: Video: rawvideo, bgr24, 1600x900, 10 tbr,
10000k tbn, 10 tbc
    Stream #0:1, 0, 1/10000000: Audio: pcm_s16le, 44100 Hz, 2 channels,
s16, 1411 kb/s
Please use -b:a or -b:v, -b is ambiguous
Incompatible pixel format 'bgr24' for codec 'libx264', auto-selecting
format 'yuv420p'
[buffer @ 03581300] w:1600 h:900 pixfmt:bgr24 tb:1/1000000 sar:0/1
sws_param:
[buffer @ 03581300] Media type mismatch between the 'src' filter output pad
0 and the 'Parsed_pan_0' filter input pad 0
Cannot create the link buffer:0 -> pan:0
Error opening filters!


2012/3/19 Carl Eugen Hoyos <cehoyos at ag.or.at>

> jacob s <jacobhameiri <at> gmail.com> writes:
>
> > According to the manual this is possible ( "If the input is a stereo
> audio
> > stream, you can mute the front left channel (and still keep the stereo
> > channel layout) with:  pan="stereo:c1=c1" ")
> > I tried this but it didn't work, I guess I am not using the correct cli
> > syntax.
>
> Command line (with -vf pan) and complete, uncut console output missing.
>
> Carl Eugen
>
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