[FFmpeg-user] Encoding Warnings
adamsmith79 at icloud.com
Tue Jun 30 01:01:53 EEST 2020
> On 29 Jun 2020, at 15:44, Jim <Ruler2112 at charter.net> wrote:
> (While this doesn't equalize the volume or eliminate all volume-related inconsistencies, it does make the loudest part of each video the same and is the best solution I've found;
I think you would like the loudnorm filter that incorporates ebur-128 adjustments.
It can run as two pass or one pass (useful for live streaming) and adjusts the audio levels to maintain the specified levels.
An example would be -af loudnorm=I=-23:TP=-1.0:LRA=11
This sets the average loudness at -23LUFS (this is pretty standard for UK TV) the True Peak value as -1.0dBfs and the loudness range shows the distribution of loudness throughout the programme.
LUFS is great because it is based on perceptual loudness and not just sample values.
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