[FFmpeg-trac] #2311(avformat:new): unexpected tee muxer behaviour
FFmpeg
trac at avcodec.org
Thu Feb 28 02:51:31 CET 2013
#2311: unexpected tee muxer behaviour
-----------------------------------+--------------------------------------
Reporter: elkq | Type: defect
Status: new | Priority: normal
Component: avformat | Version: git-master
Keywords: tee muxer | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+--------------------------------------
Summary of the bug:
Attempts to stream a webcam to two outputs fails unexpectedly, with the
message Output file #0 does not contain any stream.
The included example uses '[f=flv]alpha.flv|[f=flv]beta.flv]'
Other attempts include:
- '[f=mpegts]alpha.ts|[f=mpegts]beta.ts'
- '[f=mp4]alpha.mp4|[f=mp4]beta.mp4'
- 'alpha.mkv|[f=mp4]/dev/null'
How to reproduce:
{{{
$ ffmpeg -report -v 9 -loglevel 99 -f v4l2 -i /dev/video1 -c:v libx264 -f
tee "[f=flv]alpha.flv|[f=flv]beta.flv]"
ffmpeg started on 2013-02-27 at 17:38:18
Report written to "ffmpeg-20130227-173818.log"
ffmpeg version N-50368-ge54a1bd Copyright (c) 2000-2013 the FFmpeg
developers
built on Feb 27 2013 16:56:11 with gcc 4.7 (Ubuntu/Linaro
4.7.2-2ubuntu1)
configuration: --enable-gpl --enable-nonfree --enable-shared --enable-
libx264 --enable-libfaac --enable-libmp3lame --enable-libpulse --enable-
librtmp
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.101 / 54. 63.101
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Splitting the commandline.
Reading option '-report' ... matched as option 'report' (generate a
report) with argument '1'.
Reading option '-v' ... matched as option 'v' (set libav* logging level)
with argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav*
logging level) with argument '99'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-i' ... matched as input file with argument '/dev/video1'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument
'libx264'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'tee'.
Reading option '[f=flv]alpha.flv|[f=flv]beta.flv]' ... matched as output
file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Applying option v (set libav* logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input file /dev/video1.
Applying option f (force format) with argument v4l2.
Successfully parsed a group of options.
Opening an input file: /dev/video1.
[video4linux2,v4l2 @ 0x1dcc9c0] fd:4 capabilities:85000001
[video4linux2,v4l2 @ 0x1dcc9c0] Selecting input_channel: 0
[video4linux2,v4l2 @ 0x1dcc9c0] input_channel: 0, input_name: kinect
[video4linux2,v4l2 @ 0x1dcc9c0] Querying the device for the current frame
size
[video4linux2,v4l2 @ 0x1dcc9c0] Setting frame size to 640x480
[video4linux2,v4l2 @ 0x1dcc9c0] The V4L2 driver changed the pixel format
from 0x32315559 to 0x59565955
[video4linux2,v4l2 @ 0x1dcc9c0] Trying to set codec:rawvideo
pix_fmt:yuv420p
[video4linux2,v4l2 @ 0x1dcc9c0] The V4L2 driver changed the pixel format
from 0x32315559 to 0x59565955
[video4linux2,v4l2 @ 0x1dcc9c0] Trying to set codec:rawvideo
pix_fmt:yuv420p
[video4linux2,v4l2 @ 0x1dcc9c0] The V4L2 driver changed the pixel format
from 0x32315659 to 0x59565955
[video4linux2,v4l2 @ 0x1dcc9c0] Trying to set codec:rawvideo
pix_fmt:yuv422p
[video4linux2,v4l2 @ 0x1dcc9c0] The V4L2 driver changed the pixel format
from 0x50323234 to 0x59565955
[video4linux2,v4l2 @ 0x1dcc9c0] Trying to set codec:rawvideo
pix_fmt:yuyv422
[video4linux2,v4l2 @ 0x1dcc9c0] The V4L2 driver changed the pixel format
from 0x56595559 to 0x59565955
[video4linux2,v4l2 @ 0x1dcc9c0] Trying to set codec:rawvideo
pix_fmt:uyvy422
[video4linux2,v4l2 @ 0x1dcc9c0] Probe buffer size limit of 5000000 bytes
reached
rfps: 14.083333 0.019419
Last message repeated 1 times
rfps: 14.166667 0.016053
rfps: 14.250000 0.013012
rfps: 14.333333 0.010296
rfps: 14.416667 0.007903
Last message repeated 1 times
rfps: 14.500000 0.005836
Last message repeated 1 times
rfps: 14.583333 0.004093
rfps: 14.666667 0.002674
rfps: 14.750000 0.001580
Last message repeated 1 times
rfps: 14.833333 0.000810
Last message repeated 1 times
rfps: 14.916667 0.000365
Last message repeated 1 times
rfps: 15.000000 0.000245
rfps: 15.083333 0.000449
Last message repeated 1 times
rfps: 15.166667 0.000978
Last message repeated 1 times
rfps: 15.250000 0.001831
Last message repeated 1 times
rfps: 15.333333 0.003008
rfps: 15.416667 0.004510
rfps: 15.500000 0.006337
Last message repeated 1 times
rfps: 15.583333 0.008488
Last message repeated 1 times
rfps: 15.666667 0.010964
rfps: 15.750000 0.013764
rfps: 15.833333 0.016889
rfps: 29.083333 0.019695
Last message repeated 1 times
rfps: 29.166667 0.016371
rfps: 29.250000 0.013371
rfps: 29.333333 0.010696
rfps: 29.416667 0.008346
Last message repeated 1 times
rfps: 29.500000 0.006320
Last message repeated 1 times
rfps: 29.583333 0.004619
rfps: 29.666667 0.003242
rfps: 29.750000 0.002190
Last message repeated 1 times
rfps: 29.833333 0.001462
Last message repeated 1 times
rfps: 29.916667 0.001058
Last message repeated 1 times
rfps: 30.000000 0.000980
rfps: 30.083333 0.001226
Last message repeated 1 times
rfps: 30.166667 0.001796
Last message repeated 1 times
rfps: 30.250000 0.002691
Last message repeated 1 times
rfps: 30.333333 0.003910
rfps: 30.416667 0.005454
rfps: 30.500000 0.007322
Last message repeated 1 times
rfps: 30.583333 0.009515
Last message repeated 1 times
rfps: 30.666667 0.012033
rfps: 30.750000 0.014875
rfps: 30.833333 0.018041
rfps: 44.166667 0.017178
rfps: 44.250000 0.014220
rfps: 44.333333 0.011587
rfps: 44.416667 0.009278
Last message repeated 1 times
rfps: 44.500000 0.007294
Last message repeated 1 times
rfps: 44.583333 0.005634
rfps: 44.666667 0.004299
rfps: 44.750000 0.003289
Last message repeated 1 times
rfps: 44.833333 0.002603
Last message repeated 1 times
rfps: 44.916667 0.002241
Last message repeated 1 times
rfps: 45.000000 0.002204
rfps: 45.083333 0.002492
Last message repeated 1 times
rfps: 45.166667 0.003104
Last message repeated 1 times
rfps: 45.250000 0.004041
Last message repeated 1 times
rfps: 45.333333 0.005302
rfps: 45.416667 0.006887
rfps: 45.500000 0.008798
Last message repeated 1 times
rfps: 45.583333 0.011032
Last message repeated 1 times
rfps: 45.666667 0.013591
rfps: 45.750000 0.016475
rfps: 45.833333 0.019683
rfps: 59.166667 0.018475
rfps: 59.250000 0.015559
rfps: 59.333333 0.012967
rfps: 59.416667 0.010700
Last message repeated 1 times
rfps: 59.500000 0.008758
rfps: 59.583333 0.007140
rfps: 59.666667 0.005847
rfps: 59.750000 0.004878
Last message repeated 1 times
rfps: 59.833333 0.004234
Last message repeated 1 times
rfps: 59.916667 0.003914
rfps: 60.000000 0.003919
rfps: 29.970030 0.000971
rfps: 59.940060 0.003883
rfps: 14.985015 0.000243
Last message repeated 1 times
[video4linux2,v4l2 @ 0x1dcc9c0] Estimating duration from bitrate, this may
be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video1':
Duration: N/A, start: 463381.035470, bitrate: N/A
Stream #0:0, 9, 1/1000000: Video: rawvideo (UYVY / 0x59565955),
uyvy422, 640x480, 1/1000000, -2147483 kb/s, 14.99 tbr, 1000k tbn, 1000k
tbc
Successfully opened the file.
Parsing a group of options: output file [f=flv]alpha.flv|[f=flv]beta.flv].
Applying option c:v (codec name) with argument libx264.
Applying option f (force format) with argument tee.
Successfully parsed a group of options.
Opening an output file: [f=flv]alpha.flv|[f=flv]beta.flv].
Successfully opened the file.
Output #0, tee, to '[f=flv]alpha.flv|[f=flv]beta.flv]':
Output file #0 does not contain any stream
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2311>
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