[FFmpeg-devel] EBU R128 Filter Mono vs Stereo results
ubitux at gmail.com
Sun Mar 3 23:14:53 CET 2013
On Sun, Mar 03, 2013 at 01:51:09PM -0500, Paul Figgiani wrote:
> In a generic example If I analyze a stereo file using the EBU R128 filter and it returns -16.0 LUFS as the Integrated (Program) loudness ... and then play the example file in a DAW and pass it through a compliant Loudness Meter - the results are consistent.
> In a second generic example If I analyze a mono file using the EBU R128 filter and it returns -19.0 LUFS as the Integrated Loudness ... and then play this example file in a DAW and pass through a loudness meter - the Loudness Meter displays -16.0 LUFS. The results are off by 3 LU.
> Can someone elaborate?
Please open a ticket on https://ffmpeg.org/trac/ffmpeg/ with the sample,
the complete command line and output you have, and what you expect.
If you're a developer, you can dig yourself in libavfilter/f_ebur128.c.
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