Opened 4 years ago
Last modified 4 years ago
#7274 new defect
ffmpeg ignores padding when decoding DTS-HD MA stream in DTSHD container
Reported by: | Rollinnn | Owned by: | |
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Priority: | normal | Component: | undetermined |
Version: | git-master | Keywords: | dca |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
I took wav file 24 bit 96 kHz, encoded it to DTS-HD MA in DTSHD container using DTS-HD Master Audio Suite encoder.
Then i re-encoded my *.dtshd file to flac using ffmpeg.
Then i did binary comparison (i used foobar2000 with plugin foo_bitcompare, but probably there exist other tools for this) of resulting flac against source wav and found that resulted flac is offsetted by 2048 samples.
If i use dcadec (https://github.com/foo86/dcadec/releases) to decode *.dtshd file to wav, then resulted wav is bit-identical with source wav. If i use dcadec with option -S (Don't strip padding samples for streams within DTS-HD container), then resulted wav is also offsetted by 2048 samples. So it seems that ffmpeg just ignores padding for DTS-HD MA stream in DTSHD container.
Attached zip archive contains source wav file and dtshd file.
How to reproduce:
ffmpeg -i C:\0000000000000\DTSENC.dtshd C:\0000000000000\DTSENC.flac ffmpeg version N-91330-ga990184007 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 18.102 / 56. 18.102 libavcodec 58. 20.103 / 58. 20.103 libavformat 58. 17.100 / 58. 17.100 libavdevice 58. 4.101 / 58. 4.101 libavfilter 7. 25.100 / 7. 25.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 Input #0, dtshd, from 'C:\0000000000000\DTSENC.dtshd': Metadata: fileinfo : : Duration: 00:00:00.77, bitrate: 3909 kb/s Stream #0:0: Audio: dts (DTS-HD MA), 96000 Hz, stereo, s32p (24 bit) Stream mapping: Stream #0:0 -> #0:0 (dts (dca) -> flac (native)) Press [q] to stop, [?] for help Output #0, flac, to 'C:\0000000000000\DTSENC.flac': Metadata: fileinfo : : encoder : Lavf58.17.100 Stream #0:0: Audio: flac, 96000 Hz, stereo, s32 (24 bit), 128 kb/s Metadata: encoder : Lavc58.20.103 flac size= 307kB time=00:00:00.76 bitrate=3276.5kbits/s speed=27.4x video:0kB audio:299kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.711299%
Attachments (1)
Change History (2)
by , 4 years ago
Attachment: | DTS-HD MA padding ignored in DTSHD container.zip added |
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comment:1 by , 4 years ago
Keywords: | dca added |
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