meta,
    tool = "ges-launch-$(gst_api_version)",
    args = {
        --videosink, "$(videosink) sync=false name=videosink",
        --audiosink, "$(audiosink) sync=false name=audiosink",
        --video-caps, "video/x-raw,format=I420,width=1280,height=720,framerate=30/1,chroma-site=mpeg2,colorimetry=bt709",
    },
    handles-states=true,
    ignore-eos=true,
    configs = {
        "$(validateflow), pad=videosink:sink, record-buffers=true, ignored-fields=\"stream-start={stream-id,group-id,stream}, segment={position,}\", ignored-event-types={gap}",
        "$(validateflow), pad=audiosink:sink, record-buffers=true, ignored-fields=\"stream-start={stream-id,group-id,stream}, segment={position,}\", ignored-event-types={gap}",
    }

add-clip, name=c0, asset-id=time-overlay, layer-priority=0, type=GESSourceClip, start=0, duration=1.0
set-child-properties, element-name=c0, pattern=blue, valignment=center, halignment=center, time-mode=time-code

add-clip, name=c1, asset-id=time-overlay, layer-priority=0, type=GESSourceClip, start=1.0, duration=1.0
set-child-properties, element-name=c1, pattern=red, valignment=center, halignment=center, time-mode=time-code
pause

seek, start=0.0, stop=0.5, flags=accurate+flush
play

seek, on-message=eos, start=0.0, stop=0.5, flags=accurate+flush
seek, on-message=eos, start=0.0, stop=1.0, flags=accurate+flush
seek, on-message=eos, start=1.0, stop=1.5, flags=accurate+flush
stop, on-message=eos