helix mobile producer on-demand user's guide - RealPlayer

CHAPTER 6: Setting Encoding ParametersVideo FiltersVideo prefilters are applied in a specific order in the encoding chain from firstto last as follows:• Inverse Telecine• Cropping• Deinterlace• Brightness/Contrast• Gamma Correction• Resize• Logo Insertion• Change Frame RateInverse TelecineTelecine is the conversion of film content (24 fps) into NTSC broadcastformat (29.97 fps). This video prefilter converts NTSC (29.97 fps) telecinedcontent back to the original film format (24 fps). Artifacts created by the"telecine" process are removed. A mandatory parameter is needed to decidethe field priority of the input content (odd/even).The Inverse Telecine portion is designed to take 29.97 fps input thatoriginated from 24 fps film and convert it back to 24 fps.Note: This filter will only work with 29.97 fps source material.If the original content was not telecined, the quality of theoutput will be poor.The Field Dominance parameter specifies the field order (either odd or even). Ifthe wrong field order is specified, the resulting video will be noticeablydistorted.43