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

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Helix Mobile Producer On-Demand User’s GuideInverse Telecine DiagramCroppingThis video prefilter crops the video to a specified region.The video cropping prefilter exposes values for Left, Top, Width, and Heightfor the cropping region. The basic restrictions on possible values are that thecropped image must be no less than 32x32 pixels (or in the case of H.263,128x96) and no larger than the original image.Note: RealVideo codecs require their input video size to bedivisible by 4.DeinterlaceThis filter will remove interlace artifacts (jaggies) that are visible whenconverting 29.97 fps - 60 fields/second interlaced video (this is what isbroadcast to your television) to 29.97 fps progressive video (what you see on acomputer screen). The jaggies that result from this conversion are a result ofthe even/odd fields in the source video, and is most noticeable on movingimages.Use this filter for video input that is interlaced. Keep in mind, however, that ifthe original video source was not interlaced and you use the deinterlace filteranyway, the quality of the output will be very poor.Note: A video is interlaced if you can see a "combing" effect inthe preview panel. Essentially, an interlaced frame consists oftwo images captured at different times and combined in oneframe in such a way that the two instants merge into a singleimage.44
CHAPTER 6: Setting Encoding ParametersDeinterlace filter applied on an interlaced video (detail)Jaggedness in anInterlaced VideoJaggedness Removedwith the De-interlace FilterColor AdjustmentThis video prefilter adjusts the brightness and/or contrast of the input video.Both brightness and contrast have a value range of between -100 to +100 inwhole digit increments. A value of 0 has no effect. For the brightness filter, avalue of -100 equals full black, and +100 equals full white.Brightness, contrast. You can adjust the brightness and contrast of a videostream by dragging the sliders back and forth or by entering numeric values inthe corresponding text boxes.Gamma correction. You can adjust the gamma values of the input video bymoving the sliders for the three colors components (R, G, B) individually (thedefault method). Alternatively, you can select the Link colors option to link thethree sliders so that they move together, to increase or decrease full colorsaturation.Each component has a value range of between -100 to +100. A value of 0 hasno effect.ResizeThis video prefilter resizes the video to a specified width and height value. Thepossible range of values for these parameters varies by the video codec, asdetailed in the table below.Resizing ValuesCodec Min. Size Max SizeMin.incrementH.263 (Only CIF, QCIF, and SQCIF 128x96 (SQCIF) 384x288 (CIF) -are supported.)H.264 32x32 640x288 445
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QCELP 91RealAudio 91audio encoding
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