[Bug 110616] vce module in h264 encode

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon May 6 05:53:00 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=110616

            Bug ID: 110616
           Summary: vce module in h264 encode
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: baopeng88_com at 163.com

We have a playback problem in the vce module of the amd graphics card, when
using libva for h264 encoding, the field of pic_order_cnt_type in sps supports
other options besides 0? Includes 1 or 2 and so on.
      Pic_order_cnt_type specifies the encoding method for poc (picture order
count), and poc identifies the playback order of the images. The poc can be
calculated from the frame-num through the mapping relationship, or it can be
explicitly transmitted by the encoder.
      When pic_order_cnt_type = 2, the POC calculation method relies on the
least extra parameters (can save the number of bits in the slice header), and
it can only get the serial number of the top and bottom fields according to
frame_num. We need to play it quickly in this way.

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