PixelTools products can add Pan and Scan information to MPEG streams during encoding or even to an existing stream. This information instructs a decoder what subsection or supersection of each MPEG decoded frame to display. Pan and Scan information is added to the stream as two parts. The MPEG Sequence Extension should contain the horizontal and vertical dimensions of Pan and Scan decoder for this sequence. These dimensions can be smaller or larger than the source frame size. In addition, each decoded frame can include a pan and scan offset for that frame. The offset is presented in terms of horizontal and vertical pixel displacement from the center of the frame. A 0 horizontal and vertical offset for example would instruct the decoder to use the center of the decoded frame as the center of the Pan and Scan image. The offsets can be updated each frame and are stored in the MPEG Picture Coding Extensions.
Demo of Pan and Scan flag insertion
Add Pan and Scan information via MPEGRepairHD GUI
Add Pan and Scan information via Expert WorkShop SDK
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