[FFmpeg-trac] #7370(undetermined:new): Encoding and subsequent decoding with AptX (or AptX HD) results in incorrect sample rate of output file
FFmpeg
trac at avcodec.org
Mon Aug 20 21:41:24 EEST 2018
#7370: Encoding and subsequent decoding with AptX (or AptX HD) results in
incorrect sample rate of output file
-------------------------------------+-------------------------------------
Reporter: SergeFF | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: aptx | Resolution:
aptx_hd | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by SergeFF):
{{{
ffmpeg -loglevel verbose -i sine1k.wav -acodec aptx sine1k.aptx
D:\Projects\SoundExpert\research\_encoders+\Lossy\ffmpeg\FileProcess>ffmpeg
-log
level verbose -i sine1k.wav -acodec aptx sine1k.aptx
ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7.3.1 (GCC) 20180722
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
bzlib --e
nable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
libblur
ay --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb
--enable-
libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine
--enab
le-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame
--enable-li
bvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --en
able-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-
libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
--enabl
e-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf
--enabl
e-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec
--enab
le-dxva2 --enable-avisynth
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
[wav @ 0000000000109b80] parser not found for codec pcm_s16le, packets or
times
may be invalid.
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'sine1k.wav':
Duration: 00:00:01.00, bitrate: 1411 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
stereo, s16
, 1411 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> aptx (native))
Press [q] to stop, [?] for help
[graph_0_in_0_0 @ 000000000012b540] tb:1/44100 samplefmt:s16
samplerate:44100 ch
layout:0x3
[format_out_0_0 @ 000000000012c040] auto-inserting filter
'auto_resampler_0' bet
ween the filter 'Parsed_anull_0' and the filter 'format_out_0_0'
[auto_resampler_0 @ 000000000012c4c0] ch:2 chl:stereo fmt:s16 r:44100Hz ->
ch:2
chl:stereo fmt:s32p r:44100Hz
Output #0, aptx, to 'sine1k.aptx':
Metadata:
encoder : Lavf58.12.100
Stream #0:0: Audio: aptx, 44100 Hz, stereo, s32p, 128 kb/s
Metadata:
encoder : Lavc58.18.100 aptx
No more output streams to write to, finishing.
size= 43kB time=00:00:01.02 bitrate= 345.3kbits/s speed=4.68x
video:0kB audio:43kB subtitle:0kB other streams:0kB global headers:0kB
muxing ov
erhead: 0.000000%
Input file #0 (sine1k.wav):
Input stream #0:0 (audio): 44 packets read (176400 bytes); 44 frames
decoded (
44100 samples);
Total: 44 packets (176400 bytes) demuxed
Output file #0 (sine1k.aptx):
Output stream #0:0 (audio): 44 frames encoded (44100 samples); 44
packets muxe
d (44100 bytes);
Total: 44 packets (44100 bytes) muxed
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7370#comment:1>
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