One of the extra tests runs:

GST_GL_XINITTHREADS=1 DISPLAY=:0.0 gst-validate-media-check-1.0  file:///home/v/gst-validate/gst-integration-testsuites/medias/big/matroska/Sintel.2010.720p.mkv --expected-results "/home/v/gst-validate/gst-integration-testsuites/medias/big/matroska/Sintel.2010.720p.mkv.media_info"

This fails:

0:00:00.163540329  9882 0x7f3124001200 ERROR               validate gst-validate-reporter.c:176:gst_validate_report_valist: <(null)> 2039 (critical) : file-checking: resulting file stream profiles didn't match expected values : Reference descriptor for stream c24b44b450ffd4885aa50fa0a636e92cedafaf33952517b4b0798a502e7c76ce/001 has caps: video/x-h264, level=(string)4.1, profile=(string)high, codec_data=(buffer)01640029ffe1001d67640029ac520c01401169a810100a000003000200000300611e30631901000668e8bec4c84c, stream-format=(string)avc, alignment=(string)au, width=(int)1280, height=(int)544, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)647727273/26988634 but compared stream 0b241b32bd8ba5ac72a97ba0b5926bd17e9b991e96d0dd7293a75cbc76cfbc2a/001 has caps: video/x-h264, level=(string)4.1, profile=(string)high, codec_data=(buffer)01640029ffe1001d67640029ac520c01401169a810100a000003000200000300611e30631901000668e8bec4c84c, stream-format=(string)avc, alignment=(string)au, width=(int)1280, height=(int)544, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)24/1


The difference is the framerate: 24/1 vs 647727273/26988634. The former is what is detected (agrees with gst-discoverer-1.0 and ffmpeg -i), while the latter (pretty close to 24) is what is expected (from medias/big/matroska/Sintel.2010.720p.mkv.media_info).