caf: noise after seeking with ffplay

[ami_stuff]

ffplay generates noise after seeking in attached caf file

​http://samples.mplayerhq.hu/A-codecs/caf/testcaf3.caf

C:\>ffplay testcaf3.caf
ffplay version N-46469-gc995644 Copyright (c) 2003-2012 the FFmpeg developers
  built on Nov  5 2012 17:54:28 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runt
ime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass -
-enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enab
le-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-libo
pus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheo
ra --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --ena
ble-zlib
  libavutil      52.  5.100 / 52.  5.100
  libavcodec     54. 71.100 / 54. 71.100
  libavformat    54. 36.100 / 54. 36.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 21.106 /  3. 21.106
  libswscale      2.  1.102 /  2.  1.102
  libswresample   0. 16.100 /  0. 16.100
  libpostproc    52.  1.100 / 52.  1.100
[caf @ 02af0060] Estimating duration from bitrate, this may be inaccurate
Input #0, caf, from 'testcaf3.caf':
  Duration: 00:00:03.01, start: 0.000000, bitrate: 187 kb/s
    Stream #0:0: Audio: adpcm_ima_qt (ima4 / 0x34616D69), 44100 Hz, 1 channels,
s16p, 176 kb/s
Seek to 51% ( 0:00:01) of total duration ( 0:00:03)       B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 122=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 94
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 104=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 107=    0B f=0/0
    Last message repeated 1 times  0KB vq=    0KB sq=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 95
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 108
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 99
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 93
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 94q=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 119
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 92
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 93q=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 90
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 92
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 121=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 106
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 104
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 90q=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 115
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 99q=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 91q=    0B f=0/0
    Last message repeated 1 times  0KB vq=    0KB sq=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 93
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 123
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 101=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 91
    Last message repeated 1 times
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 109
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 92
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 108=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 122
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 115
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 89
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 109
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 107
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 91q=    0B f=0/0
    Last message repeated 1 times  0KB vq=    0KB sq=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 107
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 90
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 123
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 98
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 93q=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 91
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 92
    Last message repeated 1 times  0KB vq=    0KB sq=    0B f=0/0
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 115
[adpcm_ima_qt @ 02af60a0] ERROR: step_index[0] = 96
   2.46 A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0

[Carl Eugen Hoyos]

Reproducible with the following command line:
$ ffmpeg -ss 1 -i testcaf3.caf out.wav

Additionally, ffplay -autoexit does not work for the sample...

[Carl Eugen Hoyos]

Replying to cehoyos:

Additionally, ffplay -autoexit does not work for the sample...

This should be fixed in git head.

[Elon Musk]

Looks like it tries binary seeking instead packet one.

[ami_stuff]

this happens only with adpcm_ima_qt in caf

ffmpeg -i test.wav -acodec adpcm_ima_qt out.caf