Device settings

This dialog box provides you with advanced options when setting up an EDL.

• Preroll. Specifies the number of frames, relative to the mark-in time, that you want your device to start playing before encoding begins. Prerolling the tape stabilizes the tape so that no lines, jitters, or other artifacts resulting from the startup of the device are encoded. Prerolling should occur before startup latency, so consider the latency of your system as you calculate the number of preroll frames to use.
• Stop latency. Specifies the number of frames, relative to the mark-out time, that you want encoding to continue. This ensures that the encoder captures the last frame of your clip before shutting down.
• Startup latency. Specifies the number of frames, relative to the mark-in time, that you want the encoder to start encoding. This setting compensates for the latency that occurs after the start command is issued, but before encoding actually begins. You will have to experiment with your system to determine its latency in frames. After you determine the length of that delay in frames, you can start the encoder early, relative to your mark-in point, by that number of frames. For example, if your computer starts encoding after 10 frames, and you want to start encoding at frame 1, then you would set a startup latency of -9 (9 frames before you actually need it to start).
• Video format. Specifies the format of the source video.