Use reverse telecine in Compressor
Telecine is the process of converting motion picture film to the NTSC video format used in broadcast television. You can use Compressor to perform a reverse telecine frame rate conversion on telecined footage.
When film 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 final video file that has a broken cadence with an inconsistent 3:2 pattern. It’s much more difficult 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 fields when creating the 23.98 fps video.
The reverse telecine feature in Compressor automatically detects broken cadences and adjusts processing as needed.
In Compressor, select an applied or custom preset.
In the Video Properties section of the Video inspector, click the “Frame rate” pop-up menu, then choose 29.97.
In the Quality section of the Video inspector, click the “Retiming quality” pop-up menu, then choose Reverse Telecine.
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 doesn’t work as efficiently 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.
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