lvqcl

LAV uses ffmpeg for decoding. If ffmpeg cannot decode xHE-AAC then LAV can't play it.

Also, 0.73.1 is very old. First, try to update to 0.76.1.

"R128GAIN is a FFmpeg and SoX based EBU R128 compliant loudness scanner." IMHO it's too heavy for flac / metaflac. Also, abandoned? (last update was in 2014). libebur128, on the...

> In theory, there could be 3 "modes" like "ebu", "atsc" and "replaygain" using the exact same loudness code and generating tags like these (example from my tests) — or...

My post was not about algorithms, but about tags. For example, foobar2000 uses new algorithm to calculate loudness, but it writes tags that are 100% compatible with the old standard.

That was 3 years ago though. Maybe AV1 HDR encoding quality has improved since then. P.S. but imho SDR should be preferred over HDR by default.

https://github.com/mpv-player/mpv/issues/11739#issuecomment-1909947448