[FFmpeg-user] ebur128: How to get truepeak stats?

[Graham Schabel]

Hi,
Simple syntax question: How can I get the filter ebur128 to show true peak
statistics from ffmpeg?

Below is a current example and printout, if it is needed for reference.
Thanks in advance,
Graham

ffmpeg -nostats -i A00010-01.wav -filter_complex ebur128 -f null -

ffmpeg version 1.2.6 Copyright (c) 2000-2014 the FFmpeg developers
  built on Mar  7 2014 10:52:03 with gcc 4.7 (Debian 4.7.2-5)
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector
--param=ssp-buffer-size=4 -Wformat -Werror=format-security '
--extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared
--enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis
--enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc
--enable-x11grab --enable-libgsm --enable-libtheora
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264
--enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx
--enable-libschroedinger --disable-encoder=libschroedinger
--enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter
--enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb
--enable-libvo-amrwbenc --enable-libaacplus
--libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray
--enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl
--enable-libass --enable-libopus --enable-fontconfig --enable-libpulse
--disable-mips32r2 --disable-mipsdspr1 --dis  libavutil      52. 18.100 /
52. 18.100
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.104 / 54. 63.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 42.103 /  3. 42.103
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
[wav @ 0x1d595c0] max_analyze_duration 5000000 reached at 5015510
microseconds
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, wav, from 'A00010-01.wav':
  Duration: 00:06:41.41, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
stereo, s16, 1411 kb/s
Output #0, null, to 'pipe:':
  Metadata:
    encoder         : Lavf54.63.104
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
  Stream #0:0 (pcm_s16le) -> ebur128
  ebur128 -> Stream #0:0 (pcm_s16le)
Press [q] to stop, [?] for help
[Parsed_ebur128_0 @ 0x1d69ce0] t: 0.0999792  M:-120.7 S:-120.7     I: -70.0
LUFS     LRA:   0.0 LU
[Parsed_ebur128_0 @ 0x1d69ce0] t: 0.199979   M:-120.7 S:-120.7     I: -70.0
LUFS     LRA:   0.0 LU

....

[Parsed_ebur128_0 @ 0x1d69ce0] t: 401.3      M:-142.9 S: -20.7     I: -17.7
LUFS     LRA:   8.1 LU
[Parsed_ebur128_0 @ 0x1d69ce0] t: 401.4      M:-142.9 S: -21.0     I: -17.7
LUFS     LRA:   8.1 LU
size=N/A time=00:06:41.40 bitrate=N/A
video:0kB audio:75264kB subtitle:0 global headers:0kB muxing overhead
-100.000029%
Summary:

  Integrated loudness:
    I:         -17.7 LUFS
    Threshold: -28.3 LUFS

  Loudness range:
    LRA:         8.1 LU
    Threshold: -38.3 LUFS
    LRA low:   -23.1 LUFS
    LRA high:  -15.0 LUFS