Opened 14 years ago
Closed 11 years ago
#1684 closed defect (wontfix)
adpcm_ct: volume goes up while seeking with ffplay
| Reported by: | ami_stuff | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avformat |
| Version: | git-master | Keywords: | adpcm_ct |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
the audio volume increases for a second or so when I seek a few times in attached file
http://samples.mplayerhq.hu/A-codecs/Creative%20Audio/examples/stereo44100.wav
C:\>ffmpeg -i stereo44100.wav
ffmpeg version N-43803-g2c0b164 Copyright (c) 2000-2012 the FFmpeg developers
built on Aug 22 2012 02:22:47 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-w32threads --enable-memalign-hack --enable-runtime-cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-libs='-lws2_32 -
lwinmm -lpthread' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snap
shots/build/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/s
napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
libavutil 51. 70.100 / 51. 70.100
libavcodec 54. 54.100 / 54. 54.100
libavformat 54. 25.104 / 54. 25.104
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 13.100 / 3. 13.100
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
[wav @ 0x1eace20] max_analyze_duration 5000000 reached at 5015510
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'stereo44100.wav':
Duration: 00:00:19.84, bitrate: 352 kb/s
Stream #0:0: Audio: adpcm_ct ([0][2][0][0] / 0x0200), 44100 Hz, stereo, s16,
352 kb/s
At least one output file must be specified
Change History (5)
comment:1 by , 14 years ago
| Keywords: | adpcm_ct added |
|---|---|
| Reproduced by developer: | set |
| Status: | new → open |
| Version: | unspecified → git-master |
follow-up: 3 comment:2 by , 13 years ago
| Component: | undetermined → avformat |
|---|
seeking may be not possible at all....
comment:3 by , 13 years ago
Replying to richardpl:
seeking may be not possible at all....
Do you mean that seeking generally does not work for you for the sample or that you believe seeking without the volume increase is impossible?
comment:4 by , 13 years ago
The only way of seeking is to start decoding from start for any adpcm codec which decoding depends on previously
decoded samples and do not provide such needed data in frames.
comment:5 by , 11 years ago
| Resolution: | → wontfix |
|---|---|
| Status: | open → closed |
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The same happens with the binary decoder (mplayer -ac ctadp32)...