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5th April 2015, 02:00 | #1 | Link |
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Apply DRC or not when transcoding from AC3?
I'm transcoding some AC3 anime soundtracks, and am wondering, what's the 'standard' practice for dealing with DRC? Do people usually just transcode the unaltered soundtrack, or do they apply DRC to the audio as it's being transcoded? Is one way objectively better or 'truer' to the original than the other?
I've heard that unaltered audio is good for good sound equipment and DRC'd audio is good for weak equipment, which makes sense, but what's the best choice if you just want a happy medium? Is it easier to make DRC'd audio sound optimal on high-end equipment or to make unaltered audio sound optimal on low-end equipment? Obviously, I'm sure there are a lot of variables that come into play that could sway the case-specific decision one way or another, but are there any general guidelines I should follow when making the decision? EDIT: Just to be clear, I am referring to AC3's custom varying DRC metadata which is obviously lost when transcoding to another format. I'm aware you can always apply more general DRC. Last edited by nonoitall; 5th April 2015 at 02:08. |
5th April 2015, 09:26 | #2 | Link | |
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Yout can't make DRC'd audio sound optimal on high-end equipment, it's more easy make unaltered audio sound optimal on low-end equipment. Other questions requires more info: For what you transcode AC3? To what? 5.1 -> 2.0?
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5th April 2015, 17:19 | #3 | Link |
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Optimal has to do with the amount of dynamic range you can handle. DRC itself, has multiple loudness profiles (Film light, Film Standard,...) spanning a variety of listening environments. Playback devices normally reproduce the intended quality of the source.
Downmixing to stereo without preserving DRC metadata, will most likely result in clipping though. |
6th April 2015, 00:05 | #4 | Link | ||
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Quote:
Quote:
I may actually end up encoding to several different formats for different devices. Definitely AAC will be one though. And it's a stereo source. Last edited by nonoitall; 6th April 2015 at 00:17. |
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6th April 2015, 09:21 | #5 | Link |
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Apply DRC can be recommended when downmix 5.1 -> 2.0 to avoid than low volume in center channel (dialogs) can be mixed with high volume in front channels.
Over stereo sources the mix is already done and apply DRC or not is less important.
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