[FFmpeg-user] volumedetect filter and possible bug with -ss -t

[Sub Phil]

>

Please test current FFmpeg git head before reporting issues on this
mailing list.


Sorry, but same histogram results for every CLI, here's one

ffmpeg version N-81516-gbe07c25 Copyright (c) 2000-2016 the FFmpeg
developers
  built with gcc 5.4.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth
--enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
--enable-libopenjpeg --enable-libopus --enable-librtmp
--enable-libschroedinger --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
--enable-lzma --enable-decklink --enable-zlib
  libavutil      55. 29.100 / 55. 29.100
  libavcodec     57. 54.101 / 57. 54.101
  libavformat    57. 48.101 / 57. 48.101
  libavdevice    57.  0.102 / 57.  0.102
  libavfilter     6. 58.100 /  6. 58.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '20160903 1 oreiller fin 8h08.3gp':
  Metadata:
    major_brand     : 3gp4
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2016-09-04T06:08:38.000000Z
  Duration: 09:34:54.02, start: 0.000000, bitrate: 23 kb/s
    Stream #0:0(eng): Audio: amr_wb (sawb / 0x62776173), 16000 Hz, mono,
flt, 23 kb/s (default)
    Metadata:
      creation_time   : 2016-09-04T06:08:38.000000Z
      handler_name    : SoundHandle
[null @ 00000000025247e0] Using AVStream.codec to pass codec parameters to
muxers is deprecated, use AVStream.codecpar instead.
Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : 3gp4
    minor_version   : 0
    compatible_brands: isom3gp4
    encoder         : Lavf57.48.101
    Stream #0:0(eng): Audio: pcm_s16le, 16000 Hz, mono, s16, 256 kb/s
(default)
    Metadata:
      creation_time   : 2016-09-04T06:08:38.000000Z
      handler_name    : SoundHandle
      encoder         : Lavc57.54.101 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (amr_wb (amrwb) -> pcm_s16le (native))
Press [q] to stop, [?] for help
size=N/A time=00:00:02.00 bitrate=N/A speed= 337x
video:0kB audio:62kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
[Parsed_volumedetect_0 @ 0000000002527800] n_samples: 32000
[Parsed_volumedetect_0 @ 0000000002527800] mean_volume: -40.4 dB
[Parsed_volumedetect_0 @ 0000000002527800] max_volume: -22.7 dB
[Parsed_volumedetect_0 @ 0000000002527800] histogram_22db: 1
[Parsed_volumedetect_0 @ 0000000002527800] histogram_23db: 2
[Parsed_volumedetect_0 @ 0000000002527800] histogram_24db: 4
[Parsed_volumedetect_0 @ 0000000002527800] histogram_25db: 2
[Parsed_volumedetect_0 @ 0000000002527800] histogram_26db: 21
[Parsed_volumedetect_0 @ 0000000002527800] histogram_27db: 27