Pipeline Timers

Previzion contains a set of sophisticated internal timers to aid in pipeline rendering tuning. These are accessed with the Pipeline button under the System tab.

Timer Descriptions

Note: all times in milliseconds

• Frame: # of frames processed

• InSync: Time between each incoming sync packet. Packets typically come in at 2x frame rate.

• TrackSet: Time between start of new frame (defined by incoming sync data pulse) and when all tracking data has been acquired

• TrackToFr: Time between when all tracking data has been acquired and the video frame is ready for processing

• InQueue: # of frames waiting in input queue

• InVideo: Time between frames of input video

• InDrop: # of frames dropped on input side

• OutQueue: # of frames in output queue

• OutVideo: Time between frames of output video

• OutDrop: # of frames dropped on output side

• OutRepeat: # of frames repeated in output side

• cVideo: Time in CPU pipeline from start through video ingest

• cScene: Time in CPU for scene render

• cEffects: Time in CPU for distortion, depth of field, and motion blur

• cComp: Time in CPU for keying and compositing

Timers, Continued

• gVideo: Time in GPU for video ingest

• gScene: Time in GPU for scene rendering

• gEffects: Time in GPU for distortion, depth of field, and motion blur

• gComp: Time in GPU for keying and compositing

• cOutput: Time in CPU for output to HDSDI, data recording, etc.

• cFrame: Total CPU time for one frame

• cIdle: Idle CPU time for one frame

• cDecode: CPU time to decode MPEG

• gOutput: GPU time for output to HDSDI

• gFrame: GPU time for one frame

• gIdle: Idle GPU time for one frame

• gLag: Time that GPU frame completion lags