[opendtv] Re: ATSC and Lip Sync
- From: dan.grimes@xxxxxxxx
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 29 May 2009 08:34:36 -0700
I understand that most (if not all) Container or Wrapper files split the
audio and video data up even if originally together during a digital
ingest or encode process. So even if MPEG-2 TS, ATSC, HD-SDI, etc. keep
everything in time, once it goes to the hard drive, if not properly
processed, there sync problems are likely. Seems to me like there is a
lot of potential for problems throughout the processing chain as the file
is edited and otherwise manipulated. It also seems to me that this
potential could be fixed by not splitting up the two when storing the
media and continuing to process the two together as data in common, with
relationship. But then again, I'm no expert in file storage formats so
perhaps there are reasons for doing so.
Dan Grimes
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