I'll just do it at the muxing stage, when I combine Chew's DVD-Video with 2-channel soundtrack for consumption in my own living room.
Similar topic came up a few years ago, in the ROTJ discussion on page 11 of hairy_hen's thread, where Moth3r offered this from ITU:
Maybe "clearly" is too strong a word. In any sample group there's bound to be some who don't notice.Moth3r said:
Errors of +20 ms (audio advanced) and -40 ms (audio delayed) are "detectable", and errors of +40 and -160 ms are "subjectively annoying"*.
A single video frame is displayed for 40ms (PAL) or 41.7ms (NTSC). A single-frame audio delay may be acceptable, but a single frame in advance is clearly not (this is because this is an unnatural condition - we are accustomed to a minor audio lag in everyday life due to the differences between the speeds of light and sound).
* Ref: International Telecommunication Union Document 11A/47-E, 13 October 1993
Apologies to anybody who cannot un-see.
Today was my Momma's birthday . . . which reminds me of Harmy.
Let them eat cake!