Trim (clip, int first_frame, int last_frame [, bool pad_audio])
Trim trims a video clip so that it includes only the frames first_frame
through last_frame. The audio is similarly trimmed so that it stays synchronized.
If you pass 0 for last_frame it means "end of clip." A negative value of last_frame
returns the frames from first_frame to
first_frame + (- last_frame-1). This is the only way to get the
very first frame!
pad_audio (default true) causes the audio stream to be padded to align with the video stream. Otherwise the tail of a short audio stream is left so. When last_frame=0 and pad_audio=false the end of the two streams remains independent.
Trim(100,0) # delete the first 100 frames, audio padded # or trimmed to match the video length. Trim(100,0,false) # delete the first 100 frames of audio and video, # the resulting stream lengths remain independent. Trim(100,-100) # is the same as trim(100,199) Trim(100,199,false) # audio will be trimmed if longer but not # padded if shorter to frame 199 Trim(0,-1) # returns only the first frame
|v2.56||added pad audio|
$Date: 2008/10/26 14:18:27 $