14 Jul
2013
14 Jul
'13
9:14 p.m.
Le sextidi 26 messidor, an CCXXI, Jan Ehrhardt a écrit :
Simple, speed.
I am in no way bound to EBU recommendations
Then use two passes and volumedetect. If I take the decoding time for audio (Vorbis -q 4) as measurement unit, -af ebur128 costs about 4 while -af volumedetect costs about 0.4 (and -af volume 0.04). Therefore, two decoding for two passes plus volumedetect cost ~2.5 while one pass with ebur128 costs ~5. If you have enough RAM, you can save the PCM while running volumedetect and avoid the second decoding too. Regards, -- Nicolas George