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Messages - Trench

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Newbies / Re: StaxRip - Insert audio delay at specific offset
« on: February 28, 2012, 01:00:52 PM »

Thought for a while I'd be able to trick the math of "mkvmerge --sync" into applying an offset a certain number of frames in, but that never panned out.

Ended up using Audacity, plus the ffmpeg library for Audacity to read and export AAC, and inserted the 1-second bump directly into the AAC/M4A audio file at the necessary offset.  Saved the ACC audio back to the same file, then simply re-ran the mkmerge command line already in the StaxRip log to re-mux everything into a new MKV.

So not too painful, but maybe an option that could be useful if it doesn't already exist in some form.  (Add/remove X milliseconds at a particular offset.)

-Trench

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Newbies / StaxRip - Insert audio delay at specific offset
« on: February 26, 2012, 06:21:23 PM »

Have a DVD movie source which converts using the DivX Plus profile successfully, except that after 80 minutes into the movie, the audio sync is suddenly off by +/-1sec.  Do any of the included encoders or muxers support inserting an audio delay starting at a specific offset?


I've fixed audio oos issues that started from the beginning, and I see where its supported to fix delay issues that occur gradually throughout the whole file.  But I haven't figure out how to insert a delay starting only at a specific offset.  I've tried using each of the audio tracks from the DVD source (the AC3 5.1 track, the AC3 stereo track, etc.) and all convert with the same issue.  I've also tried forcing EAC3TO instead of BeSweet for the transcoding, without difference.

Making me think maybe it's actually the video conversion which is getting out of sync at that point, but presumably inserting an audio delay might still be the quickest solution.

-Trench

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