[FFmpeg-trac] #2504(avdevice:new): Audio glitches and distortion when recording alsa
FFmpeg
trac at avcodec.org
Mon Jun 10 23:44:52 CEST 2013
#2504: Audio glitches and distortion when recording alsa
------------------------------------+------------------------------------
Reporter: MrNice | Owner:
Type: defect | Status: new
Priority: important | Component: avdevice
Version: git-master | Resolution:
Keywords: regression | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+------------------------------------
Comment (by MrNice):
Sorry for my ignorance, I forgot to change directory.
I did it and removed the line 193 and saved the file.
{{{
$ ffmpeg -f alsa -ac 2 -i hw:0,0 -y out.wav
ffmpeg version 0.10.4 Copyright (c) 2000-2012 the FFmpeg developers
built on Jul 25 2012 15:45:46 with gcc 4.4.6 20120305 (Red Hat 4.4.6-4)
configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
--libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --extra-
cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-
protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib
--disable-crystalhd --enable-gnutls --enable-libass --enable-libcdio
--enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-
libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-
libpulse --enable-librtmp --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 --shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
[alsa @ 0x17dc000] Estimating duration from bitrate, this may be
inaccurate
Input #0, alsa, from 'hw:0,0':
Duration: N/A, start: 1370900485.195499, bitrate: N/A
Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Output #0, wav, to 'out.wav':
Metadata:
encoder : Lavf53.32.100
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
channels, s16, 1536 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
Press [q] to stop, [?] for help
size= 1517kB time=00:00:08.08 bitrate=1536.0kbits/s
video:0kB audio:1517kB global headers:0kB muxing overhead 0.002962%
}}}
Distortions are still here, not good.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2504#comment:81>
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