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GarrettL1979

macrumors 6502
Original poster
Feb 15, 2012
330
0
I am converting a blu ray to m4v that does not contain an HD audio track. Instead, it has a DD 5.1 and PCM track. Which option would be the better source to go with within the ATV 3 preset's audio settings in HB?
 
I am converting a blu ray to m4v that does not contain an HD audio track. Instead, it has a DD 5.1 and PCM track. Which option would be the better source to go with within the ATV 3 preset's audio settings in HB?
Probably the DD 5.1 track presuming it is ac3.
 
Pulse code modulation

Thanks. I did a little research, and it sounds like PCM would be the highest quality track considering it's uncompressed. Shouldn't I select the highest quality source within the ATV 3 preset? Like DTS-HD, TrueHD, PCM... or does this even matter since the ATV will only play back DD?
 
Since when does Handbrake do Blu-Rays? Curious about that one.
With DVD's I always put on pass-through under Audio. It leaves the audio stream as is, and they are not the biggest part anyway.

PCM in theory is better, but remember, with Blu-Ray, only digital-out delivers the highest quality (Dolby TrueHD and DTS-HD MA). If you set it to output PCM, it will only be 48khz/16bit, where the HD tracks can contain 192khz/24 bit channels.
 
Right, I would rather pass thru the AC3 then encode the pcm to AC3 or aac.
HB can read and encode a blu ray but cannot decrypt it.
 
Thanks. I did a little research, and it sounds like PCM would be the highest quality track considering it's uncompressed. Shouldn't I select the highest quality source within the ATV 3 preset? Like DTS-HD, TrueHD, PCM... or does this even matter since the ATV will only play back DD?
That's right. Dolby Digital, DTS-HD and TrueHD decompress into PCM audio.

Some discs have PCM stereo tracks; they use these for foreign languages or commentary tracks. Other titles have very high-quality PCM 7.1-channel tracks. So... sometimes PCM is better (when it's 5.1 or 7.1) and sometimes it's worse (when it's stereo).
 
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