Have been running various capture tests involving analog AC-3 capture, baffled by a de-synch issue.
So I ran a new test. Both PC's capping OTA HD, the Sarah Connor Chronicles. One unit with an ATI AIW, capturing MPG+Stereo audio, also a Creative X-FI capping the AC-3 thru SPDIF. Output was S-video thru a tuner box.
Second PC with a Hauppage 1600 card, direct to the antenna.
The MPG-2 video was in synch with the stereo audio, but the AC-3 was slightly short, 0.8 seconds in 56 minutes, though matched at the beginning synch being lost gradually.
The Hauppage file maintains synch throughout, same video, same time capture.
Seperated sound, converted to Wav, synched up the sound files both visually and auditorily.
The Hauppage AC-3 matches the analog capped AC-3 almost perfectly. Both are short of the MPG audio file by about 0.8 seconds.
So, why would an HD video file be 0.8 seconds SHORTER over 56 minutes than the same transmission downsampled thru S-video?
These results are consistent over multiple previous captures, this is the first tiem I've had another file for comparison.
Try StreamFab Downloader and download from Netflix, Amazon, Youtube! Or Try DVDFab and copy Blu-rays! or rip iTunes movies!
+ Reply to Thread
Results 1 to 1 of 1
Thread
Similar Threads
-
time difference between audio and video after capture till tens of seconds
By dekelbeitar in forum CapturingReplies: 0Last Post: 7th May 2009, 10:11 -
what is the 'DSL' file that seems to appear from time to time on DVD's?
By rotuts in forum MacReplies: 6Last Post: 24th Aug 2008, 14:08 -
Time difference between VOB and MPEG
By sambat in forum Newbie / General discussionsReplies: 6Last Post: 18th Aug 2008, 15:06 -
Problem Using Vider Studio 10 - Start Time After End Time
By jmsrickland in forum Newbie / General discussionsReplies: 0Last Post: 31st Jul 2008, 17:48 -
various time codes on miniDV. Want one time code.
By vid83 in forum Newbie / General discussionsReplies: 3Last Post: 10th Dec 2007, 22:08