HEVC could not find ref with POC xx Issue

[matknowles]

Hi, I've been having issues recently with too many unprocessed segments causing alerts to drop, so today I took the time to start fresh using the instructions on frigate's docs page, using a minimalist debian install. It's worked for a few hours but now have had a problem with things not working, here's some of the log:

2025-04-23 18:49:46.537747139 [2025-04-23 18:49:46] watchdog.FrontPath INFO : No frames received from FrontPath in 20 seconds. Exiting ffmpeg... 2025-04-23 18:49:46.537762999 [2025-04-23 18:49:46] watchdog.FrontPath INFO : Waiting for ffmpeg to exit gracefully... 2025-04-23 18:50:11.201443873 [2025-04-23 18:50:11] frigate.video ERROR : FrontPath: Unable to read frames from ffmpeg process. 2025-04-23 18:50:11.201465314 [2025-04-23 18:50:11] frigate.video ERROR : FrontPath: ffmpeg process is not running. exiting capture thread... 2025-04-23 18:50:21.203191897 [2025-04-23 18:50:21] watchdog.FrontPath ERROR : Ffmpeg process crashed unexpectedly for FrontPath. 2025-04-23 18:50:21.203215963 [2025-04-23 18:50:21] watchdog.FrontPath ERROR : The following ffmpeg logs include the last 100 lines prior to exit. 2025-04-23 18:50:21.203235751 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c847b40] Could not find ref with POC 36 2025-04-23 18:50:21.203255308 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 525 expected, 523 received. 2025-04-23 18:50:21.203277811 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 525 expected, 524 received. 2025-04-23 18:50:21.203288231 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c847b40] Could not find ref with POC 49 2025-04-23 18:50:21.203304872 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 528 expected, 0 received. 2025-04-23 18:50:21.203321404 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c891ec0] Could not find ref with POC 25 2025-04-23 18:50:21.203336973 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 528 expected, 526 received. 2025-04-23 18:50:21.203352633 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c891ec0] Could not find ref with POC 36 2025-04-23 18:50:21.203369094 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 528 expected, 0 received. 2025-04-23 18:50:21.203384253 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c891ec0] Could not find ref with POC 55 2025-04-23 18:50:21.203399272 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [hevc @ 0x55e64c847b40] Could not find ref with POC 18 2025-04-23 18:50:21.203416034 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] CSeq 528 expected, 0 received. 2025-04-23 18:50:21.203434148 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : Last message repeated 9 times 2025-04-23 18:50:21.203453154 [2025-04-23 18:50:21] ffmpeg.FrontPath.detect ERROR : [rtsp @ 0x55e64c54b080] RTP: PT=60: bad cseq a609 expected=91fb 2025-04-23 18:50:27.818606234 [2025-04-23 18:50:27] frigate.record.maintainer WARNING : Unable to keep up with recording segments in cache for FrontPath. Keeping the 6 most recent segments out of 7 and discarding the rest... 2025-04-23 18:55:26.642863799 [2025-04-23 18:55:26] watchdog.Side INFO : Side exceeded fps limit. Exiting ffmpeg... 2025-04-23 18:55:26.642896361 [2025-04-23 18:55:26] watchdog.Side INFO : Waiting for ffmpeg to exit gracefully... 2025-04-23 18:55:28.263457507 [2025-04-23 18:55:28] frigate.video ERROR : Side: Unable to read frames from ffmpeg process. 2025-04-23 18:55:28.263472826 [2025-04-23 18:55:28] frigate.video ERROR : Side: ffmpeg process is not running. exiting capture thread... 2025-04-23 18:55:38.266189039 [2025-04-23 18:55:38] watchdog.Side ERROR : Ffmpeg process crashed unexpectedly for Side. 2025-04-23 18:55:38.266204619 [2025-04-23 18:55:38] watchdog.Side ERROR : The following ffmpeg logs include the last 100 lines prior to exit. 2025-04-23 18:55:38.266208596 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 19 2025-04-23 18:55:38.266219086 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 525 expected, 523 received. 2025-04-23 18:55:38.266227001 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 525 expected, 0 received. 2025-04-23 18:55:38.266234586 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : Last message repeated 1 times 2025-04-23 18:55:38.266243302 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 9 2025-04-23 18:55:38.266246859 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 30 2025-04-23 18:55:38.266254994 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 525 expected, 0 received. 2025-04-23 18:55:38.266262028 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : Last message repeated 1 times 2025-04-23 18:55:38.266268550 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 56 2025-04-23 18:55:38.266274782 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 11 2025-04-23 18:55:38.266281234 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 33 2025-04-23 18:55:38.266287376 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 43 2025-04-23 18:55:38.266293458 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 528 expected, 0 received. 2025-04-23 18:55:38.266299930 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 27 2025-04-23 18:55:38.266306282 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 528 expected, 0 received. 2025-04-23 18:55:38.266313436 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 36 2025-04-23 18:55:38.266318455 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 528 expected, 0 received. 2025-04-23 18:55:38.266324447 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 54 2025-04-23 18:55:38.266330869 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 529 expected, 0 received. 2025-04-23 18:55:38.266336710 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 52 2025-04-23 18:55:38.266343342 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 529 expected, 0 received. 2025-04-23 18:55:38.266348963 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 55 2025-04-23 18:55:38.266355005 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 529 expected, 0 received. 2025-04-23 18:55:38.266361026 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 54 2025-04-23 18:55:38.266367238 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 0 2025-04-23 18:55:38.266373510 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 3 2025-04-23 18:55:38.266379491 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 22 2025-04-23 18:55:38.266385673 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 5 2025-04-23 18:55:38.266391704 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 531 expected, 0 received. 2025-04-23 18:55:38.266398207 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : Last message repeated 1 times 2025-04-23 18:55:38.266404990 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 33 2025-04-23 18:55:38.266411482 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 531 expected, 0 received. 2025-04-23 18:55:38.266417704 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 0 2025-04-23 18:55:38.266424196 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 531 expected, 0 received. 2025-04-23 18:55:38.266430178 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 22 2025-04-23 18:55:38.266436450 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 533 expected, 0 received. 2025-04-23 18:55:38.266442692 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : Last message repeated 1 times 2025-04-23 18:55:38.266448963 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 43 2025-04-23 18:55:38.266455346 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 0 2025-04-23 18:55:38.266461277 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a978221640] Could not find ref with POC 39 2025-04-23 18:55:38.266467589 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [rtsp @ 0x55a977ec1080] CSeq 533 expected, 0 received. 2025-04-23 18:55:38.266474272 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : Last message repeated 3 times 2025-04-23 18:55:38.266481315 [2025-04-23 18:55:38] ffmpeg.Side.detect ERROR : [hevc @ 0x55a9781afd00] Could not find ref with POC 27 2025-04-23 19:06:16.654147512 [2025-04-23 19:06:16] watchdog.BackHigh INFO : BackHigh exceeded fps limit. Exiting ffmpeg... 2025-04-23 19:06:16.654164855 [2025-04-23 19:06:16] watchdog.BackHigh INFO : Waiting for ffmpeg to exit gracefully... 2025-04-23 19:06:21.562086660 [2025-04-23 19:06:21] frigate.video ERROR : BackHigh: Unable to read frames from ffmpeg process. 2025-04-23 19:06:21.562116537 [2025-04-23 19:06:21] frigate.video ERROR : BackHigh: ffmpeg process is not running. exiting capture thread... 2025-04-23 19:06:31.565869518 [2025-04-23 19:06:31] watchdog.BackHigh ERROR : Ffmpeg process crashed unexpectedly for BackHigh. 2025-04-23 19:06:31.565893614 [2025-04-23 19:06:31] watchdog.BackHigh ERROR : The following ffmpeg logs include the last 100 lines prior to exit. 2025-04-23 19:06:31.565912460 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 54 2025-04-23 19:06:31.565927068 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 20 2025-04-23 19:06:31.565940924 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.565955292 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 527 expected, 0 received. 2025-04-23 19:06:31.565969689 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.565984788 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 528 expected, 0 received. 2025-04-23 19:06:31.565998564 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Duplicate POC in a sequence: 1. 2025-04-23 19:06:31.566012621 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Error parsing NAL unit #0. 2025-04-23 19:06:31.566027249 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [vist#0:0/hevc @ 0x56211656eec0] [dec:hevc @ 0x56211655cf40] Error submitting packet to decoder: Invalid data found when processing input 2025-04-23 19:06:31.566042658 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 528 expected, 0 received. 2025-04-23 19:06:31.566057767 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 6 2025-04-23 19:06:31.566070501 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 528 expected, 0 received. 2025-04-23 19:06:31.566083536 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 56 2025-04-23 19:06:31.566097683 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 528 expected, 0 received. 2025-04-23 19:06:31.566109635 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 0 2025-04-23 19:06:31.566124393 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 531 expected, 529 received. 2025-04-23 19:06:31.566139152 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 45 2025-04-23 19:06:31.566151295 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 531 expected, 0 received. 2025-04-23 19:06:31.566164410 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566177605 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 38 2025-04-23 19:06:31.566190780 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 21 2025-04-23 19:06:31.566203083 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 31 2025-04-23 19:06:31.566217541 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566230636 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 0 2025-04-23 19:06:31.566242218 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 532 expected, 0 received. 2025-04-23 19:06:31.566255202 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 43 2025-04-23 19:06:31.566268157 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 7 2025-04-23 19:06:31.566282424 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 0 2025-04-23 19:06:31.566293816 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 533 expected, 0 received. 2025-04-23 19:06:31.566306500 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 0 2025-04-23 19:06:31.566319685 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 533 expected, 532 received. 2025-04-23 19:06:31.566333902 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 534 expected, 0 received. 2025-04-23 19:06:31.566345715 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 55 2025-04-23 19:06:31.566359050 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 27 2025-04-23 19:06:31.566373107 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 0 2025-04-23 19:06:31.566385621 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 6 2025-04-23 19:06:31.566397634 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 534 expected, 0 received. 2025-04-23 19:06:31.566410438 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 57 2025-04-23 19:06:31.566424334 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 534 expected, 0 received. 2025-04-23 19:06:31.566437590 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 49 2025-04-23 19:06:31.566450645 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 536 expected, 0 received. 2025-04-23 19:06:31.566463920 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566477646 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 7 2025-04-23 19:06:31.566490019 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 3 2025-04-23 19:06:31.566502734 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 536 expected, 0 received. 2025-04-23 19:06:31.566514777 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 18 2025-04-23 19:06:31.566528433 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 33 2025-04-23 19:06:31.566539784 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 53 2025-04-23 19:06:31.566551827 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 537 expected, 0 received. 2025-04-23 19:06:31.566564161 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 54 2025-04-23 19:06:31.566576334 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566589980 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 537 expected, 0 received. 2025-04-23 19:06:31.566601371 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 1 2025-04-23 19:06:31.566613545 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 537 expected, 0 received. 2025-04-23 19:06:31.566627551 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566638021 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 537 expected, 0 received. 2025-04-23 19:06:31.566646567 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566654803 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 54 2025-04-23 19:06:31.566663299 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566671916 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 540 expected, 0 received. 2025-04-23 19:06:31.566680252 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 2 times 2025-04-23 19:06:31.566688678 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 57 2025-04-23 19:06:31.566697444 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 540 expected, 0 received. 2025-04-23 19:06:31.566705720 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 10 2025-04-23 19:06:31.566713966 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 19 2025-04-23 19:06:31.566722592 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 14 2025-04-23 19:06:31.566730918 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 540 expected, 0 received. 2025-04-23 19:06:31.566739374 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 29 2025-04-23 19:06:31.566747870 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 543 expected, 541 received. 2025-04-23 19:06:31.566756036 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 543 expected, 0 received. 2025-04-23 19:06:31.566764582 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566773269 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 1 2025-04-23 19:06:31.566781675 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 543 expected, 0 received. 2025-04-23 19:06:31.566789940 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 3 times 2025-04-23 19:06:31.566798246 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 58 2025-04-23 19:06:31.566806522 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 34 2025-04-23 19:06:31.566815259 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 543 expected, 0 received. 2025-04-23 19:06:31.566823594 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566832131 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 546 expected, 544 received. 2025-04-23 19:06:31.566840697 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 546 expected, 0 received. 2025-04-23 19:06:31.566848752 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566857038 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 3 2025-04-23 19:06:31.566865955 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 546 expected, 0 received. 2025-04-23 19:06:31.566874020 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 3 times 2025-04-23 19:06:31.566882517 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 33 2025-04-23 19:06:31.566890692 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 548 expected, 547 received. 2025-04-23 19:06:31.566899329 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 550 expected, 548 received. 2025-04-23 19:06:31.566908165 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 550 expected, 0 received. 2025-04-23 19:06:31.566916401 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 46 2025-04-23 19:06:31.566924667 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566933193 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 550 expected, 0 received. 2025-04-23 19:06:31.566941319 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0 2025-04-23 19:06:31.566949544 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566958211 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 14 2025-04-23 19:06:31.566966867 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 550 expected, 0 received. 2025-04-23 19:06:31.566975273 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 1 times 2025-04-23 19:06:31.566984170 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168ac600] Could not find ref with POC 22 2025-04-23 19:06:31.566992646 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [rtsp @ 0x562116521080] CSeq 550 expected, 0 received. 2025-04-23 19:06:31.567001333 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : Last message repeated 2 times 2025-04-23 19:06:31.567010560 [2025-04-23 19:06:31] ffmpeg.BackHigh.detect ERROR : [hevc @ 0x5621168b8600] Could not find ref with POC 0

Can anyone offer any help please? Thanks

[hawkeye217]

TLDR: These errors are indicating that corrupt data is coming from your camera that can't be decoded. This is usually caused by stream corruption or packet loss.

Longer explanation:

1. HEVC CSeq 525 expected, 524 received (and similar)

• What it means: This error indicates a mismatch in the HEVC (High Efficiency Video Coding) sequence parameter set (SPS) or picture parameter set (PPS) identifiers, specifically the CSeq (likely referring to a configuration sequence or parameter set ID). FFmpeg expected a parameter set with ID 525 but received one with ID 524. These parameter sets contain critical metadata about the video stream, such as resolution, frame rate, or coding structure.
• Cause: This typically happens due to:
  • Corrupted or malformed video stream: The input file may have inconsistencies, such as missing or misordered parameter sets, often due to encoding errors, file truncation, or network transmission issues.
  • Stream discontinuities: If the video stream is being received in real-time (e.g., via a network), packet loss or out-of-order delivery can cause FFmpeg to receive an unexpected parameter set.
  • Non-standard encoder behavior: Some encoders may not strictly adhere to HEVC standards, leading to unexpected parameter set IDs.
• Impact: This error can cause decoding to fail or produce artifacts, as FFmpeg cannot correctly interpret the video stream without the expected parameter set.

2. Could not find ref with POC

• What it means: POC stands for Picture Order Count, a value used in HEVC to indicate the display order of frames. This error suggests that FFmpeg is trying to decode a frame that references another frame (a "reference frame") for motion compensation, but the referenced frame with the specified POC value is missing or unavailable in the decoder’s buffer.
• Cause: This can occur due to:
  • Missing reference frames: If a frame was dropped or corrupted (e.g., due to packet loss in streaming or a damaged file), the decoder cannot find the necessary reference frame.
  • Stream corruption: Similar to the CSeq error, a corrupted HEVC stream may have inconsistent POC values or missing frames.
  • Improper stream initialization: If the decoder starts processing mid-stream without proper initialization (e.g., missing keyframes or parameter sets), it may not have the required reference frames.
• Impact: This error often leads to decoding failures, skipped frames, or visual artifacts, as the decoder cannot reconstruct the frame without its reference.

3. Are these errors related?

Yes, these errors are likely related, as both point to issues with the integrity or structure of the HEVC video stream. Here’s how they connect:

• The CSeq error indicates a problem with the parameter sets, which define how the video stream is structured. If these are incorrect or missing, the decoder may misinterpret the stream, leading to issues like missing reference frames.
• The POC error suggests that the decoder is trying to process a frame but cannot find a required reference frame. This could be a downstream effect of the CSeq error, as incorrect parameter sets might cause the decoder to misparse the stream’s frame order or reference structure.
• Both errors are commonly caused by stream corruption, packet loss, or encoding issues, so they often appear together in problematic streams.

[pingu8007]

I'm receiving this error, too. This error is happened every few seconds, and I am afraid the only solution is replace the camera. Full re-encoding is too heavy to be acceptable for me.

With smart codec off, the ffmpeg decode process can not download frame (exit code -5) on h264 and can not find poc on h265. All point to the encoder of my camera.

@hawkeye217 Do you think the performance will be significantly impacted if I ignore this issue? And how will this issue impact the detection result?

[NickM-27]

Have you tried using ffmpeg 5.0?

[pingu8007]

@NickM-27 It somewhat works, but it also break another camera.😅

Tried to reencode the stream and the occurrence is reduced to once per hour, but the CPU loading is awful. I guess I should get a coral edge tpu before continue...

[NickM-27]

The coral won't help with video decoding

[pingu8007]

@NickM-27 No, they won't. They just release the CPU from the awful loading so that I can do something else.

My setup contains cameras from different vendors. Instead of fine tuning the codec and version of ffmpeg for each camera, transcode the video to fix the buggy stream is easier.