Compressor 3. Pristine Format Conversions.
Compressor 3 uses optical flow technology, developed originally for Apple Shake, to create format and standards conversions with beautiful results. Convert NTSC to PAL, SD to HD, or interlaced video to a progressive format. Create flawless retiming effects with or without interpolation. Or use the reverse telecine feature to restore the original frame rate of a film by removing pulldown.
Optical flow technology
Optical flow is a sophisticated method of motion analysis that tracks an image pixel by pixel to create “new” frames with stunningly smooth results. Compressor uses optical flow analysis to scale video, perform interlace and deinterlace operations, and change the frame rate for format and standards conversions as well as retiming effects — all with the quality of dedicated hardware converters.
Standards conversions
Standards conversions are used to prepare projects for global distribution. Run international standards conversions in either direction between NTSC and PAL or between 50Hz and 60Hz HD formats. Thanks to optical flow technology, the video in the new format will have the same quality as the original source file while maintaining smooth playback.
Video retiming
Flexible retiming controls in Compressor let you speed up, slow down or fit your video to a time duration. Compressor uses optical flow technology to analyse and interpolate frames for pristine retiming effects. For an alternate approach that uses all of the existing frames, Compressor uses frame mapping to adjust the playback speed of your clip to fit exactly the frame rate you need. Both types of retiming include automatic pitch adjustment for audio. Preview retiming effects of either type and make adjustments in real time as you work.
Reverse telecine
Compressor 3 gives you the ability to convert 29.97 fps material to 23.98 fps. This process is called 3:2 pulldown removal, or reverse telecine. In fact, there is a wide range of pulldown schemes, or cadences, in addition to 3:2, and a sequence may include footage with multiple cadences. Compressor uses an adaptive cadence approach to sample and analyse the footage, then select the dominant cadence to use for conversion.
