Hi All
I read this about webcap capture with ffmpeg -
https://trac.ffmpeg.org/wiki/Capture/Webcam
I get this error when I list device capabilities:
tps@t420:~/AMC/test$ ffmpeg -f v4l2 -list_formats all -i /dev/video1
ffmpeg version N-69238-g2699a37 Copyright (c) 2000-2015 the FFmpeg
developers
built on Jan 24 2015 11:51:09 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --enable-gpl --enable-libmp3lame --enable-libvpx --enable-
libx264 --enable-version3 --enable-libvorbis --enable-x11grab --enable-
libfreetype --enable-libv4l2 --enable-libfdk-aac --enable-nonfree
libavutil 54. 17.100 / 54. 17.100
libavcodec 56. 20.100 / 56. 20.100
libavformat 56. 19.100 / 56. 19.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 8.101 / 5. 8.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[video4linux2,v4l2 @ 0x232d3c0] The device does not support the streaming
I/O method.
/dev/video1: Function not implemented
tps@t420:~/AMC/test$
If I supply input format then I get this error message
tps@t420:~/AMC/test$ ffmpeg -f v4l2 -list_formats all -f mpegts -i
/dev/video1
ffmpeg version N-69238-g2699a37 Copyright (c) 2000-2015 the FFmpeg
developers
built on Jan 24 2015 11:51:09 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --enable-gpl --enable-libmp3lame --enable-libvpx --enable-
libx264 --enable-version3 --enable-libvorbis --enable-x11grab --enable-
libfreetype --enable-libv4l2 --enable-libfdk-aac --enable-nonfree
libavutil 54. 17.100 / 54. 17.100
libavcodec 56. 20.100 / 56. 20.100
libavformat 56. 19.100 / 56. 19.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 8.101 / 5. 8.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Option list_formats not found.
tps@t420:~/AMC/test$
Here is what I get if use v4l2-ctl to list device capabilities
tps@t420:~/AMC/test$ v4l2-ctl --device=/dev/video1 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: 'MPEG' (compressed)
Name : MPEG2-TS with AVC/AAC streams
tps@t420:~/AMC/test$
I can capture video if I use mplayer
mplayer /dev/video1
Video comes from a Panasonic cameara and through a HD PVR box and into my
Ubuntu Linux. The hdpvr module is version "hdpvr 2-1.1:1.0" (version comes
from dmesg)
Any help would be very much appreciated
Thanks
Thomas S
--
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Thomas Seilund
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