Changes between Version 2 and Version 3 of Ticket #1235, comment 2


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Timestamp:
27 Jul 2020, 22:35:04 (4 years ago)
Author:
hendry197
Comment:

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  • Ticket #1235, comment 2

    v2 v3  
    11I don't think we need to have additional constraint such that a CVSS shall have ph_non_ref_pic_flag equal to 0.
    2 Encoder should ensure that POC derivation works. This is by either send POC MSB information or make sure there is prevTid0Pic. A CVSS can have ph_non_ref_pic_flag equal to 1 and for later pics, encoder can rely on sending POC MSB info, not relying on the CVSS for POC derivation. While it is not the best scenario, this is possible.
     2Encoder should ensure that POC derivation works. This is by either send POC MSB information or make sure there is prevTid0Pic. A CVSS can have ph_non_ref_pic_flag equal to 1 and for later pics, encoder can keep on sending POC MSB info so that POC derivation for later pictures do not rely on the CVSS for prevTid0Pic. While it is not the best scenario, this is possible.
    33
    44For me collective constraints that we have so far about POC has already implied the point I said above (i.e., For derivation of PicOrderCntMsb, it shall work; either we have POC MSB info signalled or we have prevTid0Pic present within the MaxPicOrderCntLsb / 2 range.