| 123456789101112131415161718192021222324252627282930313233 |
- function worked = seek(vr,fnum)
- %WORKED=SEEK(VR,FNUM)
- % Attempts to go to frame number FNUM in video VR. Returns 0 if the user
- % attempts to seek past the end of the video. For most video plugins, the
- % first frame is 0 (not 1), thus in the following example, both IM1 and
- % IM2 should be the same for most plugins.
- % vr = videoReader(...);
- % if (~next(vr)), error('couldn''t read first frame'); end
- % im1 = getframe(vr);
- % if (~seek(vr,0)), error('could not seek to frame 0'); end
- % im2 = getframe(vr);
- % if (any(im1 ~= im2)),
- % error('first frame and frame 0 are not the same');
- % end
- % ...
- % vr = close(vr);
- % FNUM should be an integer.
- %
- % After the videoReader constructor is called, NEXT, SEEK, or STEP should
- % be called at least once before GETFRAME is called.
- %
- % See videoReader/getinfo for more details on how many frames can be read
- % from a video.
- %
- %SEE ALSO
- % videoReader
- %
- %Copyright (c) 2006 Gerald Dalley
- %See "MIT.txt" in the installation directory for licensing details (especially
- %when using this library on GNU/Linux).
- worked = feval(vr.plugin, 'seek', vr.handle, fnum);
|
