[FFmpeg-trac] #5482(undetermined:new): g721 (g726): fix audiable artefacts
FFmpeg
trac at avcodec.org
Wed Apr 27 16:05:46 CEST 2016
#5482: g721 (g726): fix audiable artefacts
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: | undetermined
unspecified | Keywords:
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
-------------------------------------+-------------------------------------
decodes ok with sox
https://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket1955/g721_1ch_44khz.au
also reproducible with g726 sample:
https://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket1955/g726_44khz_2bit.au
{{{
C:\>ffmpeg -i C:\g721_1ch_44khz.au out.wav
ffmpeg version N-79632-g3ce1988 Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5.0-1.fc14)
configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
--arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
-pc-min
gw32-gcc' --enable-pthreads --enable-memalign-hack --enable-runtime-
cpudetect --
enable-cross-compile --enable-static --disable-shared --extra-
libs='-lws2_32 -lw
inmm -lpthread' --extra-cflags='--static
-I/var/www/users/research/ffmpeg/snapsh
ots/build/include' --extra-ldflags='-static
-L/var/www/users/research/ffmpeg/sna
pshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
version3 --
enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
--enable-li
bvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
--enable-li
bopencore-amrwb --enable-libmp3lame --enable-libfreetype --enable-libvpx
--disab
le-decoder=libvpx
libavutil 55. 22.101 / 55. 22.101
libavcodec 57. 38.100 / 57. 38.100
libavformat 57. 34.103 / 57. 34.103
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 44.100 / 6. 44.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, au, from 'C:\g721_1ch_44khz.au':
Duration: 00:00:30.01, start: 0.000000, bitrate: 176 kb/s
Stream #0:0: Audio: adpcm_g726le ([23][0][0][0] / 0x0017), 44100 Hz,
mono, s
16, 176 kb/s
[wav @ 0x2c3eb60] Using AVStream.codec to pass codec parameters to muxers
is dep
recated, use AVStream.codecpar instead.
Output #0, wav, to 'out.wav':
Metadata:
ISFT : Lavf57.34.103
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono,
s16,
705 kb/s
Metadata:
encoder : Lavc57.38.100 pcm_s16le
Stream mapping:
Stream #0:0 -> #0:0 (adpcm_g726le (g726le) -> pcm_s16le (native))
Press [q] to stop, [?] for help
size= 2585kB time=00:00:30.01 bitrate= 705.6kbits/s speed= 213x
video:0kB audio:2585kB subtitle:0kB other streams:0kB global headers:0kB
muxing
overhead: 0.002946%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5482>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list