50/60 fps video playback issues on RPi 3

    • Official Post
    Quote from kodi.log

    2020-07-16 16:40:29.111 T:1390015360 DEBUG: COMXVideo::Open - decoder_component(0x0x5d414ba8), input_port(0x82), output_port(0x83) hdmiclocksync 1

    vs.

    Quote from @chewitt

    Do not "sync playback to display" as that will force everything to be resampled and ARM devices are rubbish at that.

    Both options exist, I'm not sure exactly what you're asking.

    "Sync playback to display" is disabled. I know it's problematic, it's always been problematic - it's not something that suddenly broke in 9.2.3.

    • Official Post

    My point is that both options could be same. I don't think that a display refresh rate can vary all the time, so "hdmiclocksync" probably means "sync playback to display", not vice versa.

    If so, it could be a bug. Maybe the corresponding GUI setting has been overwritten by a wrong compiler flag. When "sync playback to display" is always active, it can result in frame drops.

    PS: I have been informed the devs. Stay cool. 8)

    The two options have completely different purposes, hdmiclocksync is changing the output refresh rate to match the content when you start playing a video. You can see it only happens when starting/stopping playback in the logs.

    "hdmiclocksync" is specific to that function in omxplayer i.e. "Display refresh rate to match video" as per the documentation - not the other way around.