________________________________
From: ffmpeg-user <ffmpeg-user-boun...@ffmpeg.org> on behalf of Stuart Robinson
<stuart.robin...@ed.ac.uk>
Sent: 19 January 2023 09:04
To: ffmpeg-user@ffmpeg.org <ffmpeg-user@ffmpeg.org>
Subject: [FFmpeg-user] DV playback rate issues, timecode is invalid
I am having terrible trouble with a long play DV I have captured that I am
trying to transcode. It seems to be playing back slowly regardless of what I've
tried. The original also plays back strangely, it was captured with ffmpeg from
a dv camcorder.
https://drive.google.com/file/d/1ya2C6JmbBQuRUJ_U-fJT8XODYVw0U1kr/view?usp=sharing
[https://lh3.googleusercontent.com/2Z8CVgH_AoIH1LrOrsKKyOeyPmv6bNovZD9akGxW3FD_b0aqhfwUxCGUHIzzrcPW1Tg=w1200-h630-p]<https://drive.google.com/file/d/1ya2C6JmbBQuRUJ_U-fJT8XODYVw0U1kr/view?usp=sharing>
Test1.dv<https://drive.google.com/file/d/1ya2C6JmbBQuRUJ_U-fJT8XODYVw0U1kr/view?usp=sharing>
drive.google.com
Can someone take a look and let me know what might help? Are the first few
frames throwing it off somehow?
Thanks for any help.
Stuart
--
Thanks,
Stuart Robinson,
__________________________________________________________________
It looks as though this was an issue with the audio changing from 4ch 32kHz to
2 ch 48kHz at the start of the track due to a faulty recording (though it may
also have had changes to the video stream), can the aac decoder accept changes?
Answering in case anyone else has similar problems, I ended up re-capturing the
file skipping out the bad patch at the start when the change happens.
Stuart
--
Thanks,
Stuart Robinson,
AV Technician,
Sound Lab,
School of Scottish Studies,
University of Edinburgh,
29 George Square,
Edinburgh,
EH8 9LD
0131 651 5001
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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