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tebasuna51 · 30th August 2018, 09:53

@heerschop
The MeGUI downmix 7.1 -> 5.1 works the same for standard or strange setup. No problem.

Even the MeGUI downmix (or BeHappy) works better than eac3to or ffmpeg downmix because, thanks to AviSynth plugin AudioLimiter (only 32 bits), mix only the 4 surround channels of 7.1 to the 2 surround channels of 5.1 leaving the other channels untouched preserving the full volume.

@MrVideo
There are two reasons to recode: save space and compatibility with some players (not all suport DTS)

If the source is lossless, like DTS MA is, the encode have only errors of the AC3 encoder like the 'core' DTS have also.
The quality difference between the 'core' DTS 1509 Kb/s and the AC3 640 Kb/s can only be listen with expensive audio equipment and 'gold' ears.

30th August 2018, 09:53	#14689 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	@heerschop The MeGUI downmix 7.1 -> 5.1 works the same for standard or strange setup. No problem. Even the MeGUI downmix (or BeHappy) works better than eac3to or ffmpeg downmix because, thanks to AviSynth plugin AudioLimiter (only 32 bits), mix only the 4 surround channels of 7.1 to the 2 surround channels of 5.1 leaving the other channels untouched preserving the full volume. @MrVideo There are two reasons to recode: save space and compatibility with some players (not all suport DTS) If the source is lossless, like DTS MA is, the encode have only errors of the AC3 encoder like the 'core' DTS have also. The quality difference between the 'core' DTS 1509 Kb/s and the AC3 640 Kb/s can only be listen with expensive audio equipment and 'gold' ears. __________________ BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 30th August 2018 at 09:57.