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233 views

Is it possible in FFMPEG to change scale over time?

Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
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4 views

Force Final Cut to use embedded timecode in preference to file creation time?

I have a series of clips from a GoPro that have embedded timecodes -- the media start/end fields show up correctly in the Info inspector. However, when the files were copied between filesystems, the ...
1
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0answers
52 views

Extract the frame (in image format) at exactly every minute (or second) from a video (by ffmpeg)

Motivation: I would like to seek the frame, then take high quality and exact time screenshots (images) from a video. The video is length is 00:48:43.71 and 23.98 fps (we can think it is 24 fps, isn't ...
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72 views

Decoding and Using VITC?

Can any one give me more explanation on VITC? I need to identify the VITC code presented in the VBI signal. How does it's format work? how does one extract it? How are VITC embedded in a video signal? ...