[FFmpeg-trac] #1570(avdevice:open): libv4l2: error dequeuing buf: Resource temporarily unavailable
FFmpeg
trac at avcodec.org
Fri Feb 1 19:11:43 CET 2013
#1570: libv4l2: error dequeuing buf: Resource temporarily unavailable
-------------------------------------+-------------------------------------
Reporter: llarevo | Owner:
Type: defect | Status: open
Priority: important | Component: avdevice
Version: git-master | Resolution:
Keywords: v4l2 | Blocked By:
regression | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by llarevo):
ffplay -loglevel debug -f video4linux2 -probesize 32 /dev/video0 works
very good. Its playing the channel previously tuned on the device with a
perfec image.
{{{
ffplay -loglevel debug -f video4linux2 -probesize 32 /dev/video0
ffplay version N-49520-gb868275 Copyright (c) 2003-2013 the FFmpeg
developers
built on Feb 1 2013 18:50:36 with gcc 4.7.2 (GCC) 20120921 (Red Hat
4.7.2-2)
configuration: --prefix=/usr/local/
libavutil 52. 17.100 / 52. 17.100
libavcodec 54. 91.100 / 54. 91.100
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.100 / 3. 35.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
[video4linux2,v4l2 @ 0x7fcce00008c0] fd:5 capabilities:5010015
[video4linux2,v4l2 @ 0x7fcce00008c0] Selecting input_channel: 0
[video4linux2,v4l2 @ 0x7fcce00008c0] input_channel: 0, input_name:
Television
[video4linux2,v4l2 @ 0x7fcce00008c0] Querying the device for the current
frame size
[video4linux2,v4l2 @ 0x7fcce00008c0] Setting frame size to 720x576
[video4linux2,v4l2 @ 0x7fcce00008c0] The V4L2 driver is using the
interlaced mode
[video4linux2,v4l2 @ 0x7fcce00008c0] Current standard: PAL-BG, id: 7,
frameperiod: 1/25
[video4linux2,v4l2 @ 0x7fcce00008c0] Probe buffer size limit of 32 bytes
reached
[video4linux2,v4l2 @ 0x7fcce00008c0] Stream #0: not enough frames to
estimate rate; consider increasing probesize
[video4linux2,v4l2 @ 0x7fcce00008c0] Estimating duration from bitrate,
this may be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1359741406.842020, bitrate: 124416 kb/s
Stream #0:0, 1, 1/1000000: Video: rawvideo (I420 / 0x30323449),
yuv420p, 720x576, 1/1000000, 124416 kb/s, 25 fps, 1000k tbr, 1000k tbn,
1000k tbc
Frame changed from size:0x0 to size:720x576
[buffer @ 0x7fccd8000e40] Setting entry with key 'video_size' to value
'720x576'
[buffer @ 0x7fccd8000e40] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 0x7fccd8000e40] Setting entry with key 'time_base' to value
'1/1000000'
[buffer @ 0x7fccd8000e40] Setting entry with key 'pixel_aspect' to value
'0/1'
[ffplay_buffer @ 0x7fccd8000d20] w:720 h:576 pixfmt:yuv420p tb:1/1000000
fr:0/1 sar:0/1 sws_param:
[crop @ 0x7fccd8002000] Setting 'w' to value 'floor(in_w/2)*2'
[crop @ 0x7fccd8002000] Setting 'h' to value 'floor(in_h/2)*2'
[ffplay_crop @ 0x7fccd8001ee0] w:720 h:576 sar:0/1 -> w:720 h:576 sar:0/1
1359741423.22 A-V: 0.000 fd= 0 aq= 0KB vq= 2430KB sq= 0B f=0/0
B f=0/0
}}}
ffmpeg -loglevel debug -t 300 -f v4l2 -s vga -r 25 -i /dev/video0 out-vga-
2M-5min.mpg gives now different errors than reported previously:
{{{
ffmpeg -loglevel debug -t 300 -f v4l2 -s vga -r 25 -i /dev/video0 out-vga-
2M-5min.mpg
ffmpeg version N-49520-gb868275 Copyright (c) 2000-2013 the FFmpeg
developers
built on Feb 1 2013 18:50:36 with gcc 4.7.2 (GCC) 20120921 (Red Hat
4.7.2-2)
configuration: --prefix=/usr/local/
libavutil 52. 17.100 / 52. 17.100
libavcodec 54. 91.100 / 54. 91.100
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.100 / 3. 35.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav*
logging level) with argument 'debug'.
Reading option '-t' ... matched as option 't' (record or transcode
"duration" seconds of audio/video) with argument '300'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-s' ... matched as option 's' (set frame size (WxH or
abbreviation)) with argument 'vga'.
Reading option '-r' ... matched as option 'r' (set frame rate (Hz value,
fraction or abbreviation)) with argument '25'.
Reading option '-i' ... matched as input file with argument '/dev/video0'.
Reading option 'out-vga-2M-5min.mpg' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set libav* logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file /dev/video0.
Applying option t (record or transcode "duration" seconds of audio/video)
with argument 300.
Applying option f (force format) with argument v4l2.
Applying option s (set frame size (WxH or abbreviation)) with argument
vga.
Applying option r (set frame rate (Hz value, fraction or abbreviation))
with argument 25.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x29031e0] fd:3 capabilities:5010015
[video4linux2,v4l2 @ 0x29031e0] Selecting input_channel: 0
[video4linux2,v4l2 @ 0x29031e0] input_channel: 0, input_name: Television
[video4linux2,v4l2 @ 0x29031e0] The V4L2 driver is using the interlaced
mode
[video4linux2,v4l2 @ 0x29031e0] Current standard: PAL-BG, id: 7,
frameperiod: 1/25
[video4linux2,v4l2 @ 0x29031e0] The driver does not allow to change time
per frame
}}}
here nothing more happens. On Strg+C (twice) ffmpeg reports
{{{
^Cinterrupted
rfps: 1.000000 0.006400
rfps: 1.083333 0.007511
Last message repeated 1 times
rfps: 1.166667 0.008711
Last message repeated 1 times
rfps: 1.250000 0.010000
rfps: 1.333333 0.011378
rfps: 1.416667 0.012844
Last message repeated 1 times
rfps: 1.500000 0.014400
rfps: 1.583333 0.016044
rfps: 1.666667 0.017778
rfps: 1.750000 0.019600
Last message repeated 1 times
rfps: 23.250000 0.019602
Last message repeated 1 times
rfps: 23.333333 0.017780
rfps: 23.416667 0.016046
rfps: 23.500000 0.014402
rfps: 23.583333 0.012846
Last message repeated 1 times
rfps: 23.666667 0.011379
rfps: 23.750000 0.010001
rfps: 23.833333 0.008712
Last message repeated 1 times
rfps: 23.916667 0.007512
Last message repeated 1 times
rfps: 24.000000 0.006401
rfps: 24.083333 0.005379
rfps: 24.166667 0.004445
Last message repeated 1 times
rfps: 24.250000 0.003601
Last message repeated 1 times
rfps: 24.333333 0.002845
rfps: 24.416667 0.002178
Last message repeated 1 times
rfps: 24.500000 0.001601
Last message repeated 1 times
rfps: 24.583333 0.001112
Last message repeated 1 times
rfps: 24.666667 0.000712
rfps: 24.750000 0.000400
Last message repeated 1 times
rfps: 24.833333 0.000178
Last message repeated 1 times
rfps: 24.916667 0.000045
Last message repeated 1 times
rfps: 25.000000 0.000000
Last message repeated 1 times
rfps: 25.083333 0.000044
Last message repeated 1 times
rfps: 25.166667 0.000178
Last message repeated 1 times
rfps: 25.250000 0.000400
Last message repeated 1 times
rfps: 25.333333 0.000711
rfps: 25.416667 0.001111
Last message repeated 1 times
rfps: 25.500000 0.001599
Last message repeated 1 times
rfps: 25.583333 0.002177
Last message repeated 1 times
rfps: 25.666667 0.002844
rfps: 25.750000 0.003599
Last message repeated 1 times
rfps: 25.833333 0.004443
Last message repeated 1 times
rfps: 25.916667 0.005376
rfps: 26.000000 0.006399
rfps: 26.083333 0.007510
Last message repeated 1 times
rfps: 26.166667 0.008710
Last message repeated 1 times
rfps: 26.250000 0.009998
rfps: 26.333333 0.011376
rfps: 26.416667 0.012843
Last message repeated 1 times
rfps: 26.500000 0.014398
rfps: 26.583333 0.016042
rfps: 26.666667 0.017776
rfps: 26.750000 0.019598
Last message repeated 1 times
rfps: 48.250000 0.019604
Last message repeated 1 times
rfps: 48.333333 0.017782
rfps: 48.416667 0.016048
rfps: 48.500000 0.014404
rfps: 48.583333 0.012848
Last message repeated 1 times
rfps: 48.666667 0.011381
rfps: 48.750000 0.010003
rfps: 48.833333 0.008714
Last message repeated 1 times
rfps: 48.916667 0.007514
Last message repeated 1 times
rfps: 49.000000 0.006403
rfps: 49.083333 0.005380
rfps: 49.166667 0.004446
Last message repeated 1 times
rfps: 49.250000 0.003602
Last message repeated 1 times
rfps: 49.333333 0.002846
rfps: 49.416667 0.002179
rfps: 49.500000 0.001601
Last message repeated 1 times
rfps: 49.583333 0.001112
Last message repeated 1 times
rfps: 49.666667 0.000712
Last message repeated 1 times
rfps: 49.750000 0.000401
Last message repeated 1 times
rfps: 49.833333 0.000178
Last message repeated 1 times
rfps: 49.916667 0.000045
Last message repeated 1 times
rfps: 50.000000 0.000000
Last message repeated 1 times
rfps: 50.083333 0.000044
Last message repeated 1 times
rfps: 50.166667 0.000177
Last message repeated 1 times
rfps: 50.250000 0.000400
Last message repeated 1 times
rfps: 50.333333 0.000710
rfps: 50.416667 0.001110
Last message repeated 1 times
rfps: 50.500000 0.001599
Last message repeated 1 times
rfps: 50.583333 0.002176
Last message repeated 1 times
rfps: 50.666667 0.002843
rfps: 50.750000 0.003598
Last message repeated 1 times
rfps: 50.833333 0.004442
Last message repeated 1 times
rfps: 50.916667 0.005376
rfps: 51.000000 0.006397
rfps: 51.083333 0.007508
Last message repeated 1 times
rfps: 51.166667 0.008708
Last message repeated 1 times
rfps: 51.250000 0.009997
rfps: 51.333333 0.011374
rfps: 51.416667 0.012840
Last message repeated 1 times
rfps: 51.500000 0.014396
Last message repeated 1 times
rfps: 51.583333 0.016041
rfps: 51.666667 0.017773
rfps: 51.750000 0.019596
rfps: 23.976024 0.006712
Last message repeated 1 times
[video4linux2,v4l2 @ 0x29031e0] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1359741727.399337, bitrate: 92160 kb/s
Stream #0:0, 8, 1/1000000: Video: rawvideo (I420 / 0x30323449),
yuv420p, 640x480, 1/1000000, 92160 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k
tbc
Successfully opened the file.
-t is not an input option, keeping it for the next output; consider fixing
your command line.
Parsing a group of options: output file out-vga-2M-5min.mpg.
Successfully parsed a group of options.
Opening an output file: out-vga-2M-5min.mpg.
File 'out-vga-2M-5min.mpg' already exists. Overwrite ? [y/N]
}}}
after choosing "y" ffmpeg reports the following
{{{
Successfully opened the file.
[buffer @ 0x2908f60] Setting entry with key 'video_size' to value
'640x480'
[buffer @ 0x2908f60] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 0x2908f60] Setting entry with key 'time_base' to value '1/25'
[buffer @ 0x2908f60] Setting entry with key 'pixel_aspect' to value '0/1'
[buffer @ 0x2908f60] Setting entry with key 'sws_param' to value 'flags=2'
[buffer @ 0x2908f60] Setting entry with key 'frame_rate' to value '25/1'
[graph 0 input from stream 0:0 @ 0x29085c0] w:640 h:480 pixfmt:yuv420p
tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2
[graph 0 input from stream 0:0 @ 0x29085c0] TB:0.040000
FRAME_RATE:25.000000 SAMPLE_RATE:nan
[mpeg1video @ 0x2904ac0] detected 8 logical cores
[mpeg1video @ 0x2904ac0] intra_quant_bias = 96 inter_quant_bias = 0
[mpeg @ 0x2904340] VBV buffer size not set, muxing may fail
Output #0, mpeg, to 'out-vga-2M-5min.mpg':
Metadata:
encoder : Lavf54.61.104
Stream #0:0, 0, 1/90000: Video: mpeg1video, yuv420p, 640x480, 1/25,
q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mpeg1video)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead -nan%
Output file is empty, nothing was encoded (check -ss / -t / -frames
parameters if used)
Received signal 2: terminating.
}}}
The TV Card is tuned to a strong signal.
Version 1.1.1 shows a slightly different behaviour:
{{{
ffmpeg -loglevel debug -t 300 -f v4l2 -s vga -r 25 -i /dev/video0 out-vga-
2M-5min.mpg
ffmpeg version 1.1.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 1 2013 18:35:12 with gcc 4.7.2 (GCC) 20120921 (Red Hat
4.7.2-2)
configuration: --prefix=/usr/local
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
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav*
logging level) with argument 'debug'.
Reading option '-t' ... matched as option 't' (record or transcode
"duration" seconds of audio/video) with argument '300'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-s' ... matched as option 's' (set frame size (WxH or
abbreviation)) with argument 'vga'.
Reading option '-r' ... matched as option 'r' (set frame rate (Hz value,
fraction or abbreviation)) with argument '25'.
Reading option '-i' ... matched as input file with argument '/dev/video0'.
Reading option 'out-vga-2M-5min.mpg' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set libav* logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file /dev/video0.
Applying option t (record or transcode "duration" seconds of audio/video)
with argument 300.
Applying option f (force format) with argument v4l2.
Applying option s (set frame size (WxH or abbreviation)) with argument
vga.
Applying option r (set frame rate (Hz value, fraction or abbreviation))
with argument 25.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x1cf4960] [3]Capabilities: 5010015
[video4linux2,v4l2 @ 0x1cf4960] The V4L2 driver using the interlaced
modeThe V4L2 driver set input_id: 0, input: Television
[video4linux2,v4l2 @ 0x1cf4960] Setting time per frame to 1/25
[video4linux2,v4l2 @ 0x1cf4960] ioctl set time per frame(1/25) failed
/dev/video0: Input/output error
}}}
Without the switch -r the behavior of 1.1.1 is similar to the latest GIT-
Version:
{{{
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav*
logging level) with argument 'debug'.
Reading option '-t' ... matched as option 't' (record or transcode
"duration" seconds of audio/video) with argument '300'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-s' ... matched as option 's' (set frame size (WxH or
abbreviation)) with argument 'vga'.
Reading option '-i' ... matched as input file with argument '/dev/video0'.
Reading option 'out-vga-2M-5min.mpg' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set libav* logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file /dev/video0.
Applying option t (record or transcode "duration" seconds of audio/video)
with argument 300.
Applying option f (force format) with argument v4l2.
Applying option s (set frame size (WxH or abbreviation)) with argument
vga.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x159e860] [3]Capabilities: 5010015
[video4linux2,v4l2 @ 0x159e860] The V4L2 driver using the interlaced
modeThe V4L2 driver set input_id: 0, input: Television
^Cinterrupted
rfps: 1.000000 0.006400
rfps: 1.083333 0.007511
rfps: 1.166667 0.008711
Last message repeated 1 times
rfps: 1.250000 0.010000
rfps: 1.333333 0.011378
rfps: 1.416667 0.012844
Last message repeated 1 times
rfps: 1.500000 0.014400
rfps: 1.583333 0.016044
rfps: 1.666667 0.017778
Last message repeated 1 times
rfps: 1.750000 0.019600
rfps: 23.250000 0.019601
Last message repeated 1 times
rfps: 23.333333 0.017779
rfps: 23.416667 0.016045
rfps: 23.500000 0.014401
Last message repeated 1 times
rfps: 23.583333 0.012845
rfps: 23.666667 0.011379
rfps: 23.750000 0.010001
Last message repeated 1 times
rfps: 23.833333 0.008712
Last message repeated 1 times
rfps: 23.916667 0.007512
rfps: 24.000000 0.006401
Last message repeated 1 times
rfps: 24.083333 0.005378
Last message repeated 1 times
rfps: 24.166667 0.004445
rfps: 24.250000 0.003600
Last message repeated 1 times
rfps: 24.333333 0.002845
Last message repeated 1 times
rfps: 24.416667 0.002178
rfps: 24.500000 0.001600
Last message repeated 1 times
rfps: 24.583333 0.001111
Last message repeated 1 times
rfps: 24.666667 0.000711
Last message repeated 1 times
rfps: 24.750000 0.000400
Last message repeated 1 times
rfps: 24.833333 0.000178
Last message repeated 1 times
rfps: 24.916667 0.000044
Last message repeated 1 times
rfps: 25.000000 0.000000
Last message repeated 1 times
rfps: 25.083333 0.000044
Last message repeated 1 times
rfps: 25.166667 0.000178
Last message repeated 1 times
rfps: 25.250000 0.000400
Last message repeated 1 times
rfps: 25.333333 0.000711
Last message repeated 1 times
rfps: 25.416667 0.001111
Last message repeated 1 times
rfps: 25.500000 0.001600
rfps: 25.583333 0.002177
Last message repeated 1 times
rfps: 25.666667 0.002844
Last message repeated 1 times
rfps: 25.750000 0.003599
rfps: 25.833333 0.004444
Last message repeated 1 times
rfps: 25.916667 0.005378
Last message repeated 1 times
rfps: 26.000000 0.006399
rfps: 26.083333 0.007510
Last message repeated 1 times
rfps: 26.166667 0.008710
Last message repeated 1 times
rfps: 26.250000 0.009999
rfps: 26.333333 0.011376
rfps: 26.416667 0.012844
Last message repeated 1 times
rfps: 26.500000 0.014399
rfps: 26.583333 0.016044
rfps: 26.666667 0.017776
Last message repeated 1 times
rfps: 26.750000 0.019599
rfps: 48.250000 0.019602
rfps: 48.333333 0.017780
rfps: 48.416667 0.016047
rfps: 48.500000 0.014402
Last message repeated 1 times
rfps: 48.583333 0.012846
rfps: 48.666667 0.011380
rfps: 48.750000 0.010002
Last message repeated 1 times
rfps: 48.833333 0.008713
rfps: 48.916667 0.007513
rfps: 49.000000 0.006402
Last message repeated 1 times
rfps: 49.083333 0.005379
rfps: 49.166667 0.004446
rfps: 49.250000 0.003601
Last message repeated 1 times
rfps: 49.333333 0.002845
Last message repeated 1 times
rfps: 49.416667 0.002179
rfps: 49.500000 0.001601
Last message repeated 1 times
rfps: 49.583333 0.001112
Last message repeated 1 times
rfps: 49.666667 0.000712
rfps: 49.750000 0.000400
Last message repeated 1 times
rfps: 49.833333 0.000178
Last message repeated 1 times
rfps: 49.916667 0.000045
Last message repeated 1 times
rfps: 50.000000 0.000000
Last message repeated 1 times
rfps: 50.083333 0.000044
Last message repeated 1 times
rfps: 50.166667 0.000178
rfps: 50.250000 0.000400
Last message repeated 1 times
rfps: 50.333333 0.000711
Last message repeated 1 times
rfps: 50.416667 0.001111
rfps: 50.500000 0.001599
Last message repeated 1 times
rfps: 50.583333 0.002177
Last message repeated 1 times
rfps: 50.666667 0.002843
rfps: 50.750000 0.003599
Last message repeated 1 times
rfps: 50.833333 0.004443
Last message repeated 1 times
rfps: 50.916667 0.005376
rfps: 51.000000 0.006398
rfps: 51.083333 0.007510
Last message repeated 1 times
rfps: 51.166667 0.008710
rfps: 51.250000 0.009999
rfps: 51.333333 0.011376
Last message repeated 1 times
rfps: 51.416667 0.012843
rfps: 51.500000 0.014398
rfps: 51.583333 0.016043
Last message repeated 1 times
rfps: 51.666667 0.017776
rfps: 51.750000 0.019598
rfps: 23.976024 0.006711
Last message repeated 1 times
[video4linux2,v4l2 @ 0x159e860] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1359742077.916414, bitrate: N/A
Stream #0:0, 8, 1/1000000: Video: rawvideo (I420 / 0x30323449),
yuv420p, 640x480, 1/1000000, -2147483 kb/s, 25 tbr, 1000k tbn, 1000k tbc
Successfully openened the file.
-t is not an input option, keeping it for the next output; consider fixing
your command line.
Parsing a group of options: output file out-vga-2M-5min.mpg.
Successfully parsed a group of options.
Opening an output file: out-vga-2M-5min.mpg.
File 'out-vga-2M-5min.mpg' already exists. Overwrite ? [y/N] y
Successfully openened the file.
[buffer @ 0x15a4c80] Setting entry with key 'video_size' to value
'640x480'
[buffer @ 0x15a4c80] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 0x15a4c80] Setting entry with key 'time_base' to value
'1/1000000'
[buffer @ 0x15a4c80] Setting entry with key 'pixel_aspect' to value '0/1'
[buffer @ 0x15a4c80] Setting entry with key 'sws_param' to value 'flags=2'
[buffer @ 0x15a4c80] Setting entry with key 'frame_rate' to value '25/1'
[graph 0 input from stream 0:0 @ 0x15a4b80] w:640 h:480 pixfmt:yuv420p
tb:1/1000000 fr:25/1 sar:0/1 sws_param:flags=2
[mpeg1video @ 0x159ff20] detected 8 logical cores
[mpeg1video @ 0x159ff20] intra_quant_bias = 96 inter_quant_bias = 0
[mpeg @ 0x159f7a0] VBV buffer size not set, muxing may fail
Output #0, mpeg, to 'out-vga-2M-5min.mpg':
Metadata:
encoder : Lavf54.59.106
Stream #0:0, 0, 1/90000: Video: mpeg1video, yuv420p, 640x480, 1/25,
q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mpeg1video)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A
video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead -nan%
Output file is empty, nothing was encoded (check -ss / -t / -frames
parameters if used)
Received signal 2: terminating.
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1570#comment:13>
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