[FFmpeg-trac] #2367(undetermined:new): input_format / -pixel_format => libv4l2: error dequeuing buf: Resource temporarily unavailable
FFmpeg
trac at avcodec.org
Sat Mar 16 08:44:10 CET 2013
#2367: input_format / -pixel_format => libv4l2: error dequeuing buf: Resource
temporarily unavailable
-------------------------------------+-------------------------------------
Reporter: MrNice | Type: defect
Status: new | Priority: normal
Component: | Version: 1.1.3
undetermined | Blocked By:
Keywords: dequeuing | Reproduced by developer: 0
buf, input_format |
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: I am trying to capture S-VHS with a Dazzle DVC100
device.
This device is able to output 422 format
{{{
$ ffmpeg -f v4l2 -list_formats all -i /dev/video0
ffmpeg version 1.1.3 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 11 2013 17:14:27 with gcc 4.4.6 (GCC) 20120305 (Red Hat
4.4.6-4)
configuration: --prefix=/opt/ffmpeg-opt/usr --enable-shared
--bindir=/opt/ffmpeg-opt/usr/bin --datadir=/opt/ffmpeg-opt/usr/share
/ffmpeg-opt --incdir=/opt/ffmpeg-opt/usr/include/ffmpeg-opt --libdir=/opt
/ffmpeg-opt/usr/lib64 --mandir=/opt/ffmpeg-opt/usr/share/man
--shlibdir=/opt/ffmpeg-opt/usr/lib64 --arch=x86_64 --optflags='-O2 -g'
--enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
--enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-
libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-
libopus --enable-libpulse --enable-libschroedinger --enable-libspeex
--enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264
--enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-
debug --disable-stripping --build-suffix=1 --disable-doc --enable-runtime-
cpudetect
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[video4linux2,v4l2 @ 0x1957280] R : yuyv422 : 16 bpp YUY2, 4:2:2, packed
:
[video4linux2,v4l2 @ 0x1957280] R : rgb565le : 16 bpp RGB 565, LE :
[video4linux2,v4l2 @ 0x1957280] R : Unsupported : 8 bpp Bayer BGBG..GRGR :
[video4linux2,v4l2 @ 0x1957280] R : Unsupported : 8 bpp Bayer GRGR..BGBG :
[video4linux2,v4l2 @ 0x1957280] R : Unsupported : 8 bpp Bayer GBGB..RGRG :
[video4linux2,v4l2 @ 0x1957280] R : yuv411p : 12 bpp YUV411 :
/dev/video0: Immediate exit requested
}}}
I get the error :
libv4l2: error dequeuing buf: Resource temporarily unavailable
when I run the command.
Note that when I remove the input_format option this is working well.
I tried with the option
-input_format yuyv422
-pixel_format yuyv422
-pix_fmt yuyv422
the 3 lead to the same error.
Please find the output with the -debug 1 option.
{{{
$ ffmpeg -debug 1 -f alsa -ac 2 -channel_layout stereo -i hw:0,0 -f v4l2
-channel 1 -input_format yuyv422 -i /dev/video0 -map 0:a -map 1:v -c:a
pcm_s16le -c:v ffv1 /Store3/Test/T`date +%Y%m%d_%H%M`.avi
ffmpeg version 1.1.3 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 11 2013 17:14:27 with gcc 4.4.6 (GCC) 20120305 (Red Hat
4.4.6-4)
configuration: --prefix=/opt/ffmpeg-opt/usr --enable-shared
--bindir=/opt/ffmpeg-opt/usr/bin --datadir=/opt/ffmpeg-opt/usr/share
/ffmpeg-opt --incdir=/opt/ffmpeg-opt/usr/include/ffmpeg-opt --libdir=/opt
/ffmpeg-opt/usr/lib64 --mandir=/opt/ffmpeg-opt/usr/share/man
--shlibdir=/opt/ffmpeg-opt/usr/lib64 --arch=x86_64 --optflags='-O2 -g'
--enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
--enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-
libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-
libopus --enable-libpulse --enable-libschroedinger --enable-libspeex
--enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264
--enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-
debug --disable-stripping --build-suffix=1 --disable-doc --enable-runtime-
cpudetect
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
matched as AVOption 'debug' with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'alsa'.
Reading option '-ac' ... matched as option 'ac' (set number of audio
channels) with argument '2'.
Reading option '-channel_layout' ... matched as option 'channel_layout'
(set channel layout) with argument 'stereo'.
Reading option '-i' ... matched as input file with argument 'hw:0,0'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-channel' ... matched as AVOption 'channel' with argument
'1'.
Reading option '-input_format' ... matched as AVOption 'input_format' with
argument 'yuyv422'.
Reading option '-i' ... matched as input file with argument '/dev/video0'.
Reading option '-map' ... matched as option 'map' (set input stream
mapping) with argument '0:a'.
Reading option '-map' ... matched as option 'map' (set input stream
mapping) with argument '1:v'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument
'pcm_s16le'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument
'ffv1'.
Reading option '/Store3/Test/T20130316_0730.avi' ... matched as output
file.
Finished splitting the commandline.
Parsing a group of options: global .
Successfully parsed a group of options.
Parsing a group of options: input file hw:0,0.
Applying option f (force format) with argument alsa.
Applying option ac (set number of audio channels) with argument 2.
Applying option channel_layout (set channel layout) with argument stereo.
Successfully parsed a group of options.
Opening an input file: hw:0,0.
[alsa @ 0x1306c20] All info found
[alsa @ 0x1306c20] Estimating duration from bitrate, this may be
inaccurate
Input #0, alsa, from 'hw:0,0':
Duration: N/A, start: 1363419044.643556, bitrate: 1536 kb/s
Stream #0:0, 1, 1/1000000: Audio: pcm_s16le, 48000 Hz, stereo, s16,
1536 kb/s
Successfully openened the file.
Parsing a group of options: input file /dev/video0.
Applying option f (force format) with argument v4l2.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x131c500] [4]Capabilities: 5020041
[video4linux2,v4l2 @ 0x131c500] Querying the device for the current frame
size
[video4linux2,v4l2 @ 0x131c500] Setting frame size to 720x576
[video4linux2,v4l2 @ 0x131c500] The V4L2 driver using the interlaced
modeThe V4L2 driver set input_id: 1, input: S-Video
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
.....(cut as many error lines).....
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
[video4linux2,v4l2 @ 0x131c500] All info found
[video4linux2,v4l2 @ 0x131c500] Estimating duration from bitrate, this may
be inaccurate
Input #1, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1363419045.175310, bitrate: 165888 kb/s
Stream #1:0, 1, 1/1000000: Video: rawvideo (YUY2 / 0x32595559),
yuyv422, 720x576, 1/25, 165888 kb/s, 25 tbr, 1000k tbn, 25 tbc
Successfully openened the file.
Parsing a group of options: output file /Store3/Test/T20130316_0730.avi.
Applying option map (set input stream mapping) with argument 0:a.
Applying option map (set input stream mapping) with argument 1:v.
Applying option c:a (codec name) with argument pcm_s16le.
Applying option c:v (codec name) with argument ffv1.
Successfully parsed a group of options.
Opening an output file: /Store3/Test/T20130316_0730.avi.
Successfully openened the file.
[abuffer @ 0x131f940] Setting entry with key 'time_base' to value
'1/48000'
[abuffer @ 0x131f940] Setting entry with key 'sample_rate' to value
'48000'
[abuffer @ 0x131f940] Setting entry with key 'sample_fmt' to value 's16'
[abuffer @ 0x131f940] Setting entry with key 'channel_layout' to value
'0x3'
[graph 0 input from stream 0:0 @ 0x131d820] tb:1/48000 samplefmt:s16
samplerate:48000 chlayout:0x3
[aformat @ 0x12f91a0] Setting entry with key 'sample_fmts' to value 's16'
[buffer @ 0x13200e0] Setting entry with key 'video_size' to value
'720x576'
[buffer @ 0x13200e0] Setting entry with key 'pix_fmt' to value '1'
[buffer @ 0x13200e0] Setting entry with key 'time_base' to value
'1/1000000'
[buffer @ 0x13200e0] Setting entry with key 'pixel_aspect' to value '0/1'
[buffer @ 0x13200e0] Setting entry with key 'sws_param' to value 'flags=2'
[buffer @ 0x13200e0] Setting entry with key 'frame_rate' to value '25/1'
[graph 1 input from stream 1:0 @ 0x131f440] w:720 h:576 pixfmt:yuyv422
tb:1/1000000 fr:25/1 sar:0/1 sws_param:flags=2
[scale @ 0x1320340] Setting 'w' to value '0'
[scale @ 0x1320340] Setting 'h' to value '0'
[scale @ 0x1320340] Setting 'flags' to value '0x4'
[auto-inserted scaler 0 @ 0x1320220] w:0 h:0 flags:'0x4' interl:0
[format @ 0x131f6e0] auto-inserting filter 'auto-inserted scaler 0'
between the filter 'Parsed_null_0' and the filter 'format'
[auto-inserted scaler 0 @ 0x1320220] picking yuv422p out of 22 ref:yuyv422
alpha:0
[auto-inserted scaler 0 @ 0x1320220] w:720 h:576 fmt:yuyv422 sar:0/1 ->
w:720 h:576 fmt:yuv422p sar:0/1 flags:0x4
[ffv1 @ 0x131ea40] detected 8 logical cores
Output #0, avi, to '/Store3/Test/T20130316_0730.avi':
Metadata:
ISFT : Lavf54.59.106
Stream #0:0, 0, 1/48000: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
48000 Hz, stereo, s16, 1536 kb/s
Stream #0:1, 0, 1/25: Video: ffv1 (FFV1 / 0x31564646), yuv422p,
720x576, 1/25, q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
Stream #1:0 -> #0:1 (rawvideo -> ffv1)
Press [q] to stop, [?] for help
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily unavailable
.....(cut as many error lines).....
libv4l2: error dequeuing buf: Resource temporarily unavailable
libv4l2: error dequeuing buf: Resource temporarily
unavailablerate=10737.1kbits/s
libv4l2: error dequeuing buf: Resource temporarily unavailable
frame= 14 fps=0.0 q=0.0 Lsize= 1475kB time=00:00:01.07
bitrate=11199.9kbits/s
video:1260kB audio:202kB subtitle:0 global headers:0kB muxing overhead
0.856143%
}}}
Let me know if you want more test or info.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2367>
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