[FFmpeg-trac] #5268(avfilter:new): very high values for min level in astats metadata output
FFmpeg
trac at avcodec.org
Wed Feb 24 21:40:24 CET 2016
#5268: very high values for min level in astats metadata output
--------------------------------------+----------------------------------
Reporter: dericed | Owner:
Type: defect | Status: new
Priority: normal | Component: avfilter
Version: git-master | Keywords: astats
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
--------------------------------------+----------------------------------
Summary of the bug:
The `Min Level` values of the astats filter's metadata reporting seems a
little high.
179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.000000
How to reproduce:
{{{
ffprobe -f lavfi -i
aevalsrc="sin(440*2*PI*t):s=8000:d=60,astats=metadata=1:reset=1:length=0.4"
ffprobe version N-51172-gd94b11a Copyright (c) 2007-2016 the FFmpeg
developers
built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM
3.6.0svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-
opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-
libfreetype --enable-ffplay --enable-vda
libavutil 55. 17.100 / 55. 17.100
libavcodec 57. 24.101 / 57. 24.101
libavformat 57. 24.101 / 57. 24.101
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, lavfi, from
'aevalsrc=sin(440*2*PI*t):s=8000:d=60,astats=metadata=1:reset=1:length=0.4':
Duration: N/A, start: 0.000000, bitrate: 512 kb/s
Stream #0:0: Audio: pcm_f64le, 8000 Hz, mono, dbl, 512 kb/s
[Parsed_astats_1 @ 0x7f88a8c17480] Channel: 1
[Parsed_astats_1 @ 0x7f88a8c17480] DC offset: nan
[Parsed_astats_1 @ 0x7f88a8c17480] Min level:
179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Max level: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Min difference: -1.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Max difference: -1.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Mean difference: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Peak level dB: -6153.053111
[Parsed_astats_1 @ 0x7f88a8c17480] RMS level dB: nan
[Parsed_astats_1 @ 0x7f88a8c17480] RMS peak dB: nan
[Parsed_astats_1 @ 0x7f88a8c17480] RMS trough dB: nan
[Parsed_astats_1 @ 0x7f88a8c17480] Crest factor: 1.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Flat factor: nan
[Parsed_astats_1 @ 0x7f88a8c17480] Peak count: 0
[Parsed_astats_1 @ 0x7f88a8c17480] Bit depth: 0
[Parsed_astats_1 @ 0x7f88a8c17480] Overall
[Parsed_astats_1 @ 0x7f88a8c17480] DC offset: nan
[Parsed_astats_1 @ 0x7f88a8c17480] Min level:
179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Max level: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Min difference: -1.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Max difference: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Mean difference: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Peak level dB: -6153.053111
[Parsed_astats_1 @ 0x7f88a8c17480] RMS level dB: nan
[Parsed_astats_1 @ 0x7f88a8c17480] RMS peak dB: nan
[Parsed_astats_1 @ 0x7f88a8c17480] RMS trough dB: 3082.547156
[Parsed_astats_1 @ 0x7f88a8c17480] Flat factor: nan
[Parsed_astats_1 @ 0x7f88a8c17480] Peak count: 0.000000
[Parsed_astats_1 @ 0x7f88a8c17480] Bit depth: 0
[Parsed_astats_1 @ 0x7f88a8c17480] Number of samples: 0
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5268>
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