4.1

Chapter 5 Advanced tasks 75
When using the reverse telecine feature in Compressor, consider these issues:
•
Because of the unpredictable nature of the processing when reversing the telecine,
segmented encoding does not work as eciently as it does when reverse telecine is not
being used.
•
If you pause the transcoding process, the transcode must start from the beginning when you
restart it.
When lm is telecined to NTSC video, it has a constant cadence. This means that the 3:2 pattern
is consistent and uninterrupted. It’s relatively easy to remove the telecine from a constant-
cadence clip because you need only determine the pattern once.
If you take these telecined clips and edit them as NTSC video, the result is a nal video le that
has a broken cadence with an inconsistent 3:2 pattern. It’s much more dicult to remove the
telecine from such a clip because you have to constantly verify the cadence to make sure you
don’t inadvertently choose incorrect elds when creating the 23.98 fps video.
The reverse telecine feature in Compressor automatically detects broken cadences and adjusts
processing as needed.
Perform a reverse telecine frame rate conversion
1 Do one of the following:
•
In the batch area, click an output row to select a setting in a job. With this method, the
modications you make will be used for outputting only that job.
•
In the Settings pane, select a custom setting from the Custom area. (If the Settings pane is
hidden, press Shift-Command-1.) With this method, the modications you make will be saved
to the custom setting for future use.
2 In the inspector pane, click Video to open the Video inspector.
If the inspector pane is not visible, click the Inspector button in the upper-right corner of the
Compressor window.
3 In the Video Properties section of the Video inspector, choose 29.97 from the “Frame rate”
pop-up menu.
4 In the Quality section of the Video Inspector, choose Reverse Telecine from the “Retiming quality”
pop-up menu.
5 If you’re modifying the setting of a specic job, click Start Batch to begin transcoding.
If you’re modifying a custom setting, there are no additional steps to take.
67% resize factor