Timecode Off by 1 Frame

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estenmar
Posts: 8
Joined: Tue Aug 30, 2016 7:14 pm

Timecode Off by 1 Frame

Post by estenmar »

Created a workflow that's using the timecode filter and a custom ffmpeg [-y -an -c:v prores_ks -profile:v 0 -vendor ap10 -pix_fmt %s_pixel_format% -s 569x320 -timecode %s_start_tc%]

Everything's working the way it's supposed to, however both the Timecode burnin and the -timecode %s_start_tc% are off by -1 frame.

(ie. source tc starts at 10;30;26;18, however first frame of transcode shows 10;30;26;17)
admin
Site Admin
Posts: 1687
Joined: Sat Feb 08, 2014 10:39 pm

Re: Timecode Off by 1 Frame

Post by admin »

Hi estenmar, thank you for using FFAStrans and welcome to the forum! :-)

I've tested a few files and I'm not able to recreate the problem. Could you send me a short sample file that initiates the issue?

-steinar
estenmar
Posts: 8
Joined: Tue Aug 30, 2016 7:14 pm

Re: Timecode Off by 1 Frame

Post by estenmar »

Hey Steiner, here's a DL link. Includes original file, Transcode, and workflow export.

https://www.dropbox.com/s/qu0c12vyn3nal ... f.zip?dl=0

Thanks for taking a look!
admin
Site Admin
Posts: 1687
Joined: Sat Feb 08, 2014 10:39 pm

Re: Timecode Off by 1 Frame

Post by admin »

I have looked at the code for reading timecode and it turns out to be somewhat inaccurate when it comes to drop frame time code. But I think I have sorted it out now. Improvements will be in the 0.7.7 version. Thanks for reporting! :-)
-steinar
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