• Deb Mukherjee's avatar
    Expose params min-gf-interval/max-gf-interval · 98526433
    Deb Mukherjee authored
    Adds two new vp9 parameters --min-gf-interval and --max-gf-interval
    to enable testing based on frequency of alt-ref frames.
    Also adds a unit-test to test enforcement of min-gf-interval.
    For both these parameters the default value is 0, which indicates
    they are picked by the encoder, based on resolution and framerate
    considerations. If they are greater than zero, the specified
    parameter is honored.
    (Additional note by paulwilkins)
    Note that there is a slight oddity in that key frames are also GFs and
    considered part of  GF only group. However they are treated as not
    being part of an arf group because for arf groups the previous GF is
    assumed to be the terminal or overlay frame for the previous group.
    (end note)
    Change-Id: Ibf0c30b72074b3f71918ab278ccccc02a95a70a0