3 "videotestsrc num-buffers=10 ! interlace ! video/x-raw,format=I420,interlace-mode=mixed ! deinterlace ! video/x-raw,interlace-mode=progressive ! fakevideosink name=fakevideosink",
6 "$(validateflow), pad=fakevideosink:sink, record-buffers=true, buffers-checksum=true",