[FFmpeg-user] ffmpeg doesn't accept named pipes?

[Ritu choudhary]

>Is your problem also reproducible with current git head?

yes i have tested with version 1.1.2 also, the problem still exists.

Following is the terminal output of ffmpeg which waits for the named pipe
to be closed at other application before resuming recording.

cdac at rituchoudhary:~/Documents/gps_exp_pipe$ sudo ffmpeg -f video4linux2 -i
/dev/video0 -i gpp.ssa -scodec ass -y output.mkv
ffmpeg version 0.11.2 Copyright (c) 2000-2012 the FFmpeg developers
  built on Dec 19 2012 11:15:06 with gcc 4.6.3
  configuration: --enable-libx264 --enable-gpl --enable-libfreetype
  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[video4linux2,v4l2 @ 0x9cfa440] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 15971.908148, bitrate: 147456 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480,
147456 kb/s, 30 tbr, 1000k tbn, 30 tbc





This application named output continuously writes to the named
pipe(gpp.ssa, made using mkfifo gpp.ssa)
cdac at rituchoudhary:~/Documents/gps_exp_pipe$ sudo ./output > gpp.ssa


Please provide the suitable solution for the above problem.


Thanks

Ritu

On Mon, Mar 4, 2013 at 1:42 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Ritu choudhary <ritu.itzme <at> gmail.com> writes:
>
> > ffmpeg -f video4linux2 -i /dev/video0 -i record.ssa -scodec ass foo.mkv
>
> Please add the complete, uncut console output.
> Is your problem also reproducible with current git head?
>
> Carl Eugen
>
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