h264parse, h265parse: Support drop frame codes with counting_type 6
Tested with an Ateme Kyrion CM5000, which uses 6 when it drops 4 frames from the code for 1080p@59.94.
Apply the same change to h265parse, with reference to the spec.
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Tested with an Ateme Kyrion CM5000, which uses 6 when it drops 4 frames from the code for 1080p@59.94.
Apply the same change to h265parse, with reference to the spec.