[FFmpeg-trac] #615(undetermined:reopened): ALSA buffer xrun
FFmpeg
trac at avcodec.org
Mon May 20 18:51:12 CEST 2013
#615: ALSA buffer xrun
-------------------------------------+-------------------------------------
Reporter: burek | Owner: michael
Type: defect | Status: reopened
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by unknow):
Replying to [comment:22 cehoyos]:
> Are external libraries (libx264 and libfaac) necessary to reproduce the
problem or is it also reproducible with {{{-strict -2 -acodec aac -vcodec
mpeg4}}} ?
>
> Please provide the command line that triggers the warnings together with
the complete, uncut console output.
seem less frequent
{{{
$ ffmpeg -f x11grab -r 25 -s 1152x864 -i 0:0+1,20 -f alsa -i default
-strict -2 -acodec aac -vcodec mpeg4 -y rec.mkv
ffmpeg version git-2013-05-19-a3264b4 Copyright (c) 2000-2013 the FFmpeg
developers
built on May 19 2013 18:10:31 with gcc 4.7 (Debian 4.7.2-5)
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-
shared --enable-gnutls --enable-fontconfig --enable-libmp3lame --enable-
libfreetype --enable-libfaac --enable-libopenjpeg --enable-libopus
--enable-librtmp --enable-libtheora --enable-libvo-aacenc --enable-
libvorbis --enable-libvpx --enable-libx264 --enable-openssl --enable-
x11grab --enable-avresample
libavutil 52. 33.100 / 52. 33.100
libavcodec 55. 10.101 / 55. 10.101
libavformat 55. 7.100 / 55. 7.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 68.101 / 3. 68.101
libavresample 1. 1. 0 / 1. 1. 0
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[x11grab @ 0xe82620] device: 0:0+1,20 -> display: 0:0 x: 1 y: 20 width:
1152 height: 864
[x11grab @ 0xe82620] shared memory extension found
Input #0, x11grab, from '0:0+1,20':
Duration: N/A, start: 1369068172.539050, bitrate: 796262 kb/s
Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1152x864,
796262 kb/s, 25 tbr, 1000k tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, alsa, from 'default':
Duration: N/A, start: 1369068172.398661, bitrate: 1536 kb/s
Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Output #0, matroska, to 'rec.mkv':
Metadata:
encoder : Lavf55.7.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1152x864,
q=2-31, 200 kb/s, 1k tbn, 25 tbc
Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo,
fltp, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
Stream #1:0 -> #0:1 (pcm_s16le -> aac)
Press [q] to stop, [?] for help
ALSA buffer xrun.23 q=31.0 size= 11098kB time=00:00:42.83
bitrate=2122.7kbits/s
Queue input is backward in time= 18295kB time=00:01:17.78
bitrate=1926.7kbits/s
Queue input is backward in time= 24558kB time=00:01:52.64
bitrate=1786.0kbits/s
[aac @ 0xebe900] Queue input is backward in time
Last message repeated 2 times
[matroska @ 0xeb1360] Non-monotonous DTS in output stream 0:1; previous:
113171, current: 113163; changing to 113171. This may result in incorrect
timestamps in the output file.
[matroska @ 0xeb1360] Non-monotonous DTS in output stream 0:1; previous:
113171, current: 113159; changing to 113171. This may result in incorrect
timestamps in the output file.
[matroska @ 0xeb1360] Non-monotonous DTS in output stream 0:1; previous:
113171, current: 113158; changing to 113171. This may result in incorrect
timestamps in the output file.
[matroska @ 0xeb1360] Non-monotonous DTS in output stream 0:1; previous:
113171, current: 113164; changing to 113171. This may result in incorrect
timestamps in the output file.
frame= 3356 fps= 24 q=24.8 Lsize= 30006kB time=00:02:20.03
bitrate=1755.4kbits/s
video:27740kB audio:2189kB subtitle:0 global headers:0kB muxing overhead
0.259974%
Received signal 2: terminating.
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/615#comment:24>
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