[FFmpeg-trac] #10179(undetermined:new): wavarc: 8-bit 0CPY is not lossless
FFmpeg
trac at avcodec.org
Tue Feb 7 23:05:43 EET 2023
#10179: wavarc: 8-bit 0CPY is not lossless
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
https://trac.ffmpeg.org/raw-attachment/ticket/10174/8_33_M_C0.WA
there is one difference between wa32.exe's output (decompressed input wav
file) and ffmpeg's output
ffmpeg's output has additional 0 at the end:
{{{
./ffmpeg -i 8_33_M_C0.WA -f u8 -y out.raw
ffmpeg version N-109772-gc56f5be678 Copyright (c) 2000-2023 the FFmpeg
developers
built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
configuration:
libavutil 57. 44.100 / 57. 44.100
libavcodec 59. 63.100 / 59. 63.100
libavformat 59. 38.100 / 59. 38.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 56.100 / 8. 56.100
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
Input #0, wavarc, from '8_33_M_C0.WA':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Audio: wavarc (0CPY / 0x59504330), 33333 Hz, mono, u8p
Stream mapping:
Stream #0:0 -> #0:0 (wavarc (native) -> pcm_u8 (native))
Press [q] to stop, [?] for help
Output #0, u8, to 'out.raw':
Metadata:
encoder : Lavf59.38.100
Stream #0:0: Audio: pcm_u8, 33333 Hz, mono, u8, 266 kb/s
Metadata:
encoder : Lavc59.63.100 pcm_u8
size= 326kB time=00:00:09.98 bitrate= 267.1kbits/s speed= 694x
video:0kB audio:326kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.000000%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10179>
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