![]() ![]() Specifies that the input media has gone through the telecine process but that the frames are no longer in a predictable pattern. Set the initial pattern to one of the following values. The setting to use is g_wszInitialPatternForInverseTelecine. If you set the deinterlacing mode to WM_DM_DEINTERLACE_INVERSETELECINE, you can specify the telecine pattern of the first input frame by calling the IWMWriterAdvanced2::SetInputSetting. Inverse Telecine Settingsįor a description of inverse telecine, see To Use Inverse Telecine. To then process additional progressive samples you must set the deinterlacing mode to WM_DM_NOTINTERLACED. If some samples then require normal deinterlacing, you must set the deinterlacing mode to WM_DM_DEINTERLACE_NORMAL. For example, to start encoding with progressive input, you don't need to set any deinterlacing mode. For example, the input vertical video resolution is 640 x 480 pixels at 30 interlaced frames/sec and the output vertical video resolution is 320 x 240 pixels at 60 frames/sec.Benefits:įor mixed content, set the deinterlacing mode as needed before passing samples of a new type. Select this mode when the vertical output resolution is half, or less, of the input vertical resolution and the output frame rate is twice as high. WM_DM_DEINTERLACE_VERTICALHALFSIZEDOUBLERATE Because the result is progressive, the same compression and display benefits of deinterlacing are realized.The compression quality improves significantly because only 24 frames/sec instead of 30 frames/sec need to be encoded.Select this mode to convert telecined 30 frames/sec video into the 24 frames/sec of the original film.Benefits: The full motion of the interlaced fields is captured.This produces progressive frames of high quality, because each field is converted to a frame and so there is no need to blend any information.For example, use this mode when the input video resolution is 640 x 480 pixels at 30 interlaced frames/sec and the output video resolution is 320 x 240 pixels at 60 frames/sec.Benefits: Select this mode when the output resolution is half, or less, of the input resolution and the output frame rate is twice as high. For example, use this mode when the input video resolution is 640 x 480 pixels and the output video resolution is 320 x 240 pixels.Benefits: Select this mode when the output resolution is half, or less, of the input resolution. The Windows Media Video codec produces higher quality compressed video. ![]() The interlace artifacts of the progressive display are significantly reduced.Select this mode to blend the even and odd fields of an interlaced frame (using a motion compensation mechanism).Benefits: Use this setting to stop deinterlacing when you have previously set the deinterlacing mode to another value. Set the deinterlacing mode to one of the following values. The setting to use is g_wszDeinterlaceMode. To have the codec deinterlace input video, call the IWMWriterAdvanced2::SetInputSetting method. The Windows Media Video codec and the Windows Media Video Advanced Profile codec both support a preprocessing feature that converts interlaced content into progressive frames. When you want to display video on a computer monitor, each frame of the video should be displayed as one image (this method of displaying video one whole frame at a time is called progressive video.) If you display interlaced video progressively, the frames may not look right, because of the time difference between the two fields. The fields that make up a frame represent slightly different presentation times so that, when interleaved, they do not form a static image. So one field contains all of the even numbered lines and the other contains all of the odd numbered lines. The bottom field contains the second line of video and every other line thereafter. ![]() The top field contains the first line of video and every other line thereafter. Each frame of interlaced video is made up of two fields. Some sources of video, such as video capture cards, deliver video data for interlaced display. ![]()
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