The tag has no usage guidance.

learn more… | top users | synonyms

2
votes
1answer
31 views

Is 0.0036% time inaccuracy on a consumer-grade camcorder expected?

I did an experiment on our church's camcorder (Sony Handycam HDR-CX380) recently to test whether it was the source of a time inaccuracy between our video recordings and PC audio recordings of sermons ...
6
votes
0answers
323 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 ...
5
votes
0answers
105 views

Trying to sync audio in mpeg2 video whose video freezes first 8 seconds in playback

So I have a handful of old mpeg2 (.mpg) files with the following profiles as provided by ffmpeg (the timecodes on each are different): Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / ...
2
votes
0answers
163 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 ...
1
vote
0answers
11 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
vote
0answers
75 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? ...
0
votes
0answers
32 views

avprobe doesn't show timecode when ffprobe does

I have several files where ffprobe displays the timecode but avprobe doesn't. ffprobe output: ffprobe 5994_DF_00593000.mov ffprobe version 2.1.3 Copyright (c) 2007-2013 the FFmpeg developers ...