Hi to everybody,
I am trying to capture a video from a point grey bumblebee BB2
firewire camera which is a IIDC 1394 v1.31 camera, when I try to save
the video on a file, ffmpeg freezes when trying to open the input file.
On this pc I can connect succesfully to the camera using libdc1394 directly.
Here is my trial:
1.
ffmpeg-t2-logleveldebug-r15-flibdc1394-i/dev/fw1-ywebcam.mpg
2.
ffmpegversion2.6Copyright(c)2000-2015the FFmpeg developers
3.
built withgcc4.4.7(GCC)20120313(Red Hat 4.4.7-11)
4.
configuration:--prefix=/root/ffmpeg_build--extra-cflags=-I/root/ffmpeg_build/include--extra-ldflags=-L/root/ffmpeg_build/lib--bindir=/root/bin--enable-libvorbis--enable-libvpx--enable-libdc1394
5.
libavutil 54.20.100/54.20.100
6.
libavcodec 56.26.100/56.26.100
7.
libavformat 56.25.101/56.25.101
8.
libavdevice 56. 4.100/56. 4.100
9.
libavfilter 5.11.102/5.11.102
10.
libswscale 3. 1.101/3. 1.101
11.
libswresample 1. 1.100/1. 1.100
12.
Splitting the commandline.
13.
Reading option'-t'... matchedasoption't'(record or
transcode"duration"seconds of audio/video)with argument'2'.
14.
Reading option'-loglevel'... matchedasoption'loglevel'(setlogging
level)with argument'debug'.
15.
Reading option'-r'... matchedasoption'r'(setframe rate(Hz value,
fraction or abbreviation))with argument'15'.
16.
Reading option'-f'... matchedasoption'f'(force format)with
argument'libdc1394'.
17.
Reading option'-i'... matchedasinputfilewith argument'/dev/fw1'.
18.
Reading option'-y'... matchedasoption'y'(overwrite output files)with
argument'1'.
19.
Reading option'webcam.mpg'... matchedasoutput file.
20.
Finished splitting the commandline.
21.
Parsing a group of options: global .
22.
Applying option loglevel(setlogging level)with argument debug.
23.
Applying option y(overwrite output files)with argument1.
24.
Successfully parsed a group of options.
25.
Parsing a group of options: inputfile/dev/fw1.
26.
Applying option t(record or transcode"duration"seconds of
audio/video)with argument2.
27.
Applying option r(setframe rate(Hz value, fraction or
abbreviation))with argument15.
28.
Applying option f(force format)with argument libdc1394.
29.
Successfully parsed a group of options.
30.
Opening an input file:/dev/fw1.
31.
^C
I tried changing the -i file but looks like ffmpeg tries to capture
always from the same device whatever I write in the -i option. Executing
in a separate shell a
1.
watchlsof/dev/fw*
I get
1.
Every 2.0s: lsof/dev/fw0/dev/fw1 /dev/fw2
Tue Mar1004:48:412015
2.
3.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
4.
ffmpeg2892root mem CHR 248,17387/dev/fw1
5.
ffmpeg2892root 6u CHR 248,1 0t07387/dev/fw1
6.
ffmpeg2892root 7u CHR 248,1 0t07387/dev/fw1
Anyone has a clue about what it is happening? What am I doing wrong?
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