[FFmpeg-trac] #6723(avcodec:open): DTS-CD Decoding Distortion
FFmpeg
trac at avcodec.org
Mon Oct 9 03:05:25 EEST 2017
#6723: DTS-CD Decoding Distortion
-------------------------------------+-------------------------------------
Reporter: nachtzug | Owner:
Type: defect | Status: open
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: dca | Blocked By:
regression | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* status: new => open
* reproduced: 0 => 1
* component: undetermined => avcodec
* priority: normal => important
* version: unspecified => git-master
* keywords: => dca regression
Comment:
For future tickets: Please test current FFmpeg git head (nothing else is
supported here), provide the command line you tested together with the
complete, uncut console output and please cut your samples.
Regression since a0349ae27c127df8c72de1c30dc4090360ec7ef4, a possibly
related error - ''Read past end of core frame'' - was shown since ae5b2c52
(the new dts decoder) but no distortions were audible.
{{{
$ ffmpeg -i Engelsstaub\ -\ Anderswelt.dts.cut.wav out.wav
ffmpeg version N-87764-gb2f256a Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 6.3.0 (GCC)
configuration: --enable-gpl
libavutil 55. 77.101 / 55. 77.101
libavcodec 57.106.104 / 57.106.104
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 9.102 / 57. 9.102
libavfilter 6.106.101 / 6.106.101
libswscale 4. 7.103 / 4. 7.103
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[dts @ 0x39fb3a0] Estimating duration from bitrate, this may be inaccurate
Input #0, dts, from 'Engelsstaub - Anderswelt.dts.cut.wav':
Duration: 00:00:14.51, start: 0.000000, bitrate: 1411 kb/s
Stream #0:0: Audio: dts (DTS), 44100 Hz, 5.1(side), fltp, 1411 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (dts (dca) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, wav, to 'out.wav':
Metadata:
ISFT : Lavf57.83.100
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
5.1(side), s16, 4233 kb/s
Metadata:
encoder : Lavc57.106.104 pcm_s16le
size= 3750kB time=00:00:07.25 bitrate=4237.4kbits/s speed= 163x
video:0kB audio:3750kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.002656%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6723#comment:13>
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