sudipj@sudipj-host-ubuntu:~/gst/git$ gst-validate-1.0 --set-scenario=seek_forward playbin uri=file:///home/sudipj/Streams/gms_testing_samples/qt/big_buck_bunny_480p_h264.mov

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Running scenario seek_forward on pipeline playbin0
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Starting pipeline
Pipeline started
0:00:00.261122395  8982 0x7f49180048a0 ERROR               validate gst-validate-reporter.c:140:gst_validate_report_valist: <avdec_h264-0:src> 262149 (critical) : caps(4): a field in caps has an unexpected value : Field width from setcaps caps 'video/x-raw, format=(string)I420, width=(int)854, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, chroma-site=(string)dv, colorimetry=(string)bt601, framerate=(fraction)24/1' is different from expected value in caps 'pending-fields, width=(int)853, height=(int)480, framerate=(fraction)24/1, pixel-aspect-ratio=(fraction)1/1;'
0:00:00.658491717  8982 0x7f49180048a0 ERROR               validate gst-validate-reporter.c:140:gst_validate_report_valist: <avdec_h264-0:sink> 262148 (critical) : caps(4): getcaps function isn't proxying downstream fields correctly : Peer pad structure 'video/x-raw, format=(string)I420, width=(int)854, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, chroma-site=(string)dv, colorimetry=(string)bt601, framerate=(fraction)24/1;' has no similar version on pad's caps 'video/x-h264, alignment=(string)au, stream-format=(string)avc, parsed=(boolean)true, level=(string)3, profile=(string)main, codec_data=(buffer)014d401effe10015274d401ea9181b07bcde00d4040406db0ad7bdf01001000428de09c8, width=(int)853, height=(int)480, framerate=(fraction)24/1, pixel-aspect-ratio=(fraction)1/1'
<position: 0:00:05.014666666 duration: 0:09:56.461666666 speed: 1.000000 />
(Executing action: First-forward-seek, number: 0 at position: 0:00:05.000000000 repeat: -1) | seeking to: 0:00:10.000000000 stop: 99:99:99.999999999 Rate 1.000000
<position: 0:00:30.048333333 duration: 0:09:56.461666666 speed: 1.000000 />
(Executing action: Unnamed, number: 1 at position: 0:00:30.000000000 repeat: -1) | Stoping pipeline

<GstValidateScenario@0x1eef660> --> State change request NULL, quiting mainloop
  critical : getcaps function isn't proxying downstream fields correctly
             Detected on <avdec_h264-0:sink> at 0:00:00.590952272
             Details : Peer pad structure 'video/x-raw, format=(string)I420, width=(int)854, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, chroma-site=(string)dv, colorimetry=(string)bt601, framerate=(fraction)24/1;' has no similar version on pad's caps 'video/x-h264, alignment=(string)au, stream-format=(string)avc, parsed=(boolean)true, level=(string)3, profile=(string)main, codec_data=(buffer)014d401effe10015274d401ea9181b07bcde00d4040406db0ad7bdf01001000428de09c8, width=(int)853, height=(int)480, framerate=(fraction)24/1, pixel-aspect-ratio=(fraction)1/1'
             Description : elements should set downstream caps restrictions on its caps when replying upstream's getcaps queries to avoid upstream sending data in an unsupported format

Got critical error Peer pad structure 'video/x-raw, format=(string)I420, width=(int)854, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, chroma-site=(string)dv, colorimetry=(string)bt601, framerate=(fraction)24/1;' has no similar version on pad's caps 'video/x-h264, alignment=(string)au, stream-format=(string)avc, parsed=(boolean)true, level=(string)3, profile=(string)main, codec_data=(buffer)014d401effe10015274d401ea9181b07bcde00d4040406db0ad7bdf01001000428de09c8, width=(int)853, height=(int)480, framerate=(fraction)24/1, pixel-aspect-ratio=(fraction)1/1', setting return value to 18
  critical : a field in caps has an unexpected value
             Detected on <avdec_h264-0:src> at 0:00:00.193072892
             Details : Field width from setcaps caps 'video/x-raw, format=(string)I420, width=(int)854, height=(int)480, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive, chroma-site=(string)dv, colorimetry=(string)bt601, framerate=(fraction)24/1' is different from expected value in caps 'pending-fields, width=(int)853, height=(int)480, framerate=(fraction)24/1, pixel-aspect-ratio=(fraction)1/1;'
             Description : fields set on a sink pad should be propagated downstream via set caps

Pipeline finished, issues found: 2
Returning 18 as error where foundsudipj@sudipj-host-ubuntu:~/gst/git$