event stream-start: GstEventStreamStart, flags=(GstStreamFlags)GST_STREAM_FLAG_NONE;
event caps: video/x-raw(memory:GLMemory), format=(string)RGBA, framerate=(fraction)30/1, height=(int)240, texture-target=(string)2D, width=(int)320;
event segment: format=TIME, start=0:00:00.000000000, offset=0:00:00.000000000, stop=none, time=0:00:00.000000000, base=0:00:00.000000000, position=0:00:00.000000000
buffer: pts=0:00:00.000000000, dur=0:00:00.033333333, flags=discont
buffer: pts=0:00:00.033333333, dur=0:00:00.033333333
buffer: pts=0:00:00.066666666, dur=0:00:00.033333334

CHECKPOINT: Setup capsfilter caps=video/x-raw

event caps: video/x-raw, format=(string)RGBA, framerate=(fraction)30/1, height=(int)240, width=(int)320;
buffer: pts=0:00:00.100000000, dur=0:00:00.033333333
buffer: pts=0:00:00.133333333, dur=0:00:00.033333333

CHECKPOINT: Setup capsfilter caps=video/x-raw(memory:GLMemory)

event caps: video/x-raw(memory:GLMemory), format=(string)RGBA, framerate=(fraction)30/1, height=(int)240, texture-target=(string)2D, width=(int)320;
buffer: pts=0:00:00.166666666, dur=0:00:00.033333334
buffer: pts=0:00:00.200000000, dur=0:00:00.033333333

CHECKPOINT: Setup capsfilter caps=video/x-raw

event caps: video/x-raw, format=(string)RGBA, framerate=(fraction)30/1, height=(int)240, width=(int)320;
buffer: pts=0:00:00.233333333, dur=0:00:00.033333333
buffer: pts=0:00:00.266666666, dur=0:00:00.033333334