(derived from svn 11, Sep 24 2006)
The modes are
- Fr : Step by frames.
- I-Fr : Step by I-frames
- Aspect : Step by frames which describe a change in aspect ratio. (see below)
- Black : Step by frames which are entirely black (does not work)
- Time : Step by approximate time
The nav buttons change the current position, depending on the current mode.
The digit shown on each button is not the number of units moved, but is just a marker.
The number of units moved is (intended to be) configurable, depends on the current mode, and is usually non-linear.
e.g. for each mode, my nav buttons are programmed to move the current position by ...
- Fr: 1,5,10,25,100 (frames)
- I-Fr: 1,2,5,10,50 (I-frames)
- Aspect: 1,2,3,4,5 (changes of aspect)
- Black: broken
- Time: 1,10,60,180,300 (seconds)
In each case the movement to the new position is accompanied by "fast-play",
i.e. all or some I-Frames ares displayed.
- Fr: all I-Frames are shown
- I-Fr: all I-frames are shown
- Aspect: some I-Frames are shown
- Time: movement is "quiet" until some I-Frame is found "close" to the target, then all I-Frames are shown.
There was originally intended to be a ValN label (value) for each nav button, to
display the magnitude of the step associated with each - but this was never
implemented.
display the magnitude of the step associated with each - but this was never
implemented.
The context nav button fast-plays a small region around the current position.
It does this:
- Remember current position as "currentpos"
- Jump back 10 Iframes. (remember this as "leftpos")
- Pause 1 second.
- Fast-play forward until currentpos
- Pause 1 second.
- Fast-play forward until find 10-Iframes.
- Pause 1 second.
- Jump back to leftpos.
- Fast-play forward to currentpos.
Footnotes:
Aspect: Navigating by change-of-aspect is particularly useful when processing an "old" tv program in 4:3 format which is interrupted by "new" adverts in widescreen.
Where can I download this version of dvbcut?
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