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Timecode file format v1
This format starts with this line:
# timecode format v1
The second line gives the default number of frames per second:
assume 27.930
All following lines contain three numbers separated by commas: the start frame (0 is the first frame), the end frame and the number of frames in this range. The FPS is a floating point number with the dot default FPS is used. Example:
800,1000,25
1500,1700,30
Timecode file format v2
In this format each line contains a timecode for the next frame. This timecode must be given in ms precision. It can be a floating point number, but it doesn’t have to be. You must give at least as many timecode lines as there are frames in the track. The timecodes in this file must be sorted. Example for 25fps:
# timecode format v2
0
40
80
etc.
Timecode file format v3
In this format each line contains a duration in seconds followed by an optional number of frames per second. Both can be floating point numbers. If the number of frames per second is not present the default one is used. For audio you should let the codec calculate the frame timecodes itself. For that you should be using 0.0 as the number of frames per second. You can also create gaps in the stream by using the gap keyword followed by the duration of the gap. Example for an audio file:
# timecode format v3
assume 0.0
25.325
7.530,38.236
gap, 10.050
2.000,38.236
etc.
Timecode file format v4
This format is identical to the v2 format. The only difference is that the timecodes do not have to be sorted. This format should almost never be used.
