Extended SAR(sample aspect ratio)

[Dave1024]

Hi,

what is the useability when an H.264 encodes sends extended SAR to decoder. ? How can decoder use this info?

Please help to find a justification.

Thanks
Dave

[Sharc]

Hi,

what is the useability when an H.264 encodes sends extended SAR to decoder. ? How can decoder use this info?

Please help to find a justification.

Thanks
Dave

Extended_SAR:
For the aspect_ratio_idc == 255 the the SAR is represented by a pair of 2 values in arbitrary (but same) units, as
sar_width : sar_height

It should be used by the decoder/player in order to display the picture with the correct aspect ratio (undistorted).