PAT/PMT change three packets into a stream marks it as 'interrupted'?

Channels DVR Server Troubleshooting
#1

I've been seeing 'interrupted' tags occasionally on IPTV recordings (less than 10% of the recordings). Typically these recordings appear to be complete, play just fine, etc.

So I've been looking at the Debug Log for these 'interrupted' recordings to see if there was any pattern to them.

Sure enough, the majority of the 'interrupted' recordings consist entirely of one or two identical entries:

loc=376 pkt=3 pid=4096 what="pat_and_pmt" offset=188 length=376 contiguous=true changed=true packets=2

I've seen them across different channels from different providers. I'm wondering if the 'interrupted' tag is really appropriate in these circumstances? Isn't it reasonable for the PAT & PMT to be (re)set in the first few packets?

I'm wondering if the PAT and PMT variables for a stream should start out marked as 'unset', and it's not considered 'interrupted' if they go from 'unset' to 'set' within it occurs in the first few packets?

  • Paul
#2

The debug log messages are a red herring

The main dvr log should show when and why the interruption occurred

1 Like
#3

Good to know...

Spelunking through the main log file, here's the fragment relating to the most recent 'interrupted' recording:

2021/09/22 19:00:00.019137 [DVR] Waiting 59m59.980867789s until next job 1632340800-107 Decked Out
2021/09/22 19:00:01.383121 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:00:01.396208 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 1h0m5>
2021/09/22 19:00:01.452170 [IDX] Generating video index for job 1632337200-36
2021/09/22 19:01:00.000801 [TNR] Closed connection to M3U-Streams for ch9135 Dejaview (CA)
2021/09/22 19:01:00.005976 [DVR] Finished job 1632333600-22 MacGyver
2021/09/22 19:01:00.067591 [DVR] Waiting 58m59.932414223s until next job 1632340800-107 Decked Out
2021/09/22 19:01:00.107131 [DVR] Processing file-13441: TV/MacGyver/MacGyver S02E05 2017-10-27 Skull  Electromagnet 2021-09-22-1800.mpg
2021/09/22 19:01:00.313476 [DVR] Running commercial detection on file 13441 (TV/MacGyver/MacGyver S02E05 2017-10-27 Skull  Electromagnet 2021-09-22-1800.mpg)
2021/09/22 19:10:46.807732 [DVR] Commercial detection for MacGyver S02E05 2017-10-27 Skull  Electromagnet 2021-09-22-1800.mpg finished with 12 markers in 9m46.5029803s.
2021/09/22 19:15:11.797101 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:15:11.797143 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 45m48.202863661s
2021/09/22 19:15:11.832471 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:15:11.832555 [DVR] Waiting 44m48.167451273s until next job 1632340800-107 Decked Out
2021/09/22 19:15:13.296366 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:15:13.296475 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 45m48>
2021/09/22 19:17:45.988780 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:17:45.988839 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 43m14.011168618s
2021/09/22 19:17:46.002925 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:17:46.002984 [DVR] Waiting 42m13.997020421s until next job 1632340800-107 Decked Out
2021/09/22 19:17:47.360379 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:17:47.360464 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 43m13>
2021/09/22 19:20:21.841638 [NAT] Failed to map port using natpmp: Non-zero result code 3
2021/09/22 19:24:14.244593 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:24:14.244638 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 36m45.755369745s
2021/09/22 19:24:14.260781 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:24:14.260804 [DVR] Waiting 35m45.739199149s until next job 1632340800-107 Decked Out
2021/09/22 19:24:15.557177 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:24:15.557268 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 36m45>
2021/09/22 19:28:55.222569 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:28:55.222617 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 32m4.777390561s
2021/09/22 19:28:55.239307 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:28:55.239341 [DVR] Waiting 31m4.76066355s until next job 1632340800-107 Decked Out
2021/09/22 19:28:56.621078 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:28:56.621167 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 32m4.>
2021/09/22 19:37:53.988630 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:37:53.988671 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 23m6.011334504s
2021/09/22 19:37:54.006279 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:37:54.006317 [DVR] Waiting 22m5.993687416s until next job 1632340800-107 Decked Out
2021/09/22 19:37:55.437810 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:37:55.437887 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 23m5.>
2021/09/22 19:42:19.672107 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:42:19.672158 [DVR] Job 1632337200-36 DC's Legends of Tomorrow ended prematurely: 18m40.327847247s
2021/09/22 19:42:19.688820 [DVR] Starting job 1632337200-36 DC's Legends of Tomorrow on ch=[9324]
2021/09/22 19:42:19.688854 [DVR] Waiting 17m40.311149961s until next job 1632340800-107 Decked Out
2021/09/22 19:42:21.117204 [TNR] Opened connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 19:42:21.117308 [DVR] Recording for job 1632337200-36 from M3U-Streams ch9324 into "TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg" for 18m40>
2021/09/22 20:00:00.011613 [DVR] Deleting failed job 1631908800-107 Decked Out
2021/09/22 20:00:00.014663 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:00:00.014684 [DVR] Waiting 29m59.985319634s until next job 1632342600-107 Decked Out
2021/09/22 20:00:06.039607 [ERR] Failed to start stream on channel 66.6 via 152040DB: HDHomeRun: 807 No Video Data
2021/09/22 20:00:06.039661 [DVR] Error running job 1632340800-107 Decked Out: could not start stream on channels=[66.6]: HDHomeRun: 807 No Video Data
2021/09/22 20:00:07.056898 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:00:07.056935 [DVR] Waiting 29m52.943069001s until next job 1632342600-107 Decked Out
2021/09/22 20:00:13.079754 [ERR] Failed to start stream on channel 66.6 via 152040DB: HDHomeRun: 807 No Video Data
2021/09/22 20:00:13.079805 [DVR] Error running job 1632340800-107 Decked Out: could not start stream on channels=[66.6]: HDHomeRun: 807 No Video Data
2021/09/22 20:00:15.103073 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:00:15.103126 [DVR] Waiting 29m44.896878311s until next job 1632342600-107 Decked Out
2021/09/22 20:00:21.125528 [ERR] Failed to start stream on channel 66.6 via 152040DB: HDHomeRun: 807 No Video Data
2021/09/22 20:00:21.125578 [DVR] Error running job 1632340800-107 Decked Out: could not start stream on channels=[66.6]: HDHomeRun: 807 No Video Data
2021/09/22 20:00:25.154168 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:00:25.154221 [DVR] Waiting 29m34.845783051s until next job 1632342600-107 Decked Out
2021/09/22 20:00:31.177584 [ERR] Failed to start stream on channel 66.6 via 152040DB: HDHomeRun: 807 No Video Data
2021/09/22 20:00:31.177632 [DVR] Error running job 1632340800-107 Decked Out: could not start stream on channels=[66.6]: HDHomeRun: 807 No Video Data
2021/09/22 20:00:39.202273 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:00:39.202333 [DVR] Waiting 29m20.797673075s until next job 1632342600-107 Decked Out
2021/09/22 20:00:45.229621 [ERR] Failed to start stream on channel 66.6 via 152040DB: HDHomeRun: 807 No Video Data
2021/09/22 20:00:45.229677 [DVR] Error running job 1632340800-107 Decked Out: could not start stream on channels=[66.6]: HDHomeRun: 807 No Video Data
2021/09/22 20:01:00.000722 [TNR] Closed connection to M3U-Streams for ch9324 Sky One (UK)
2021/09/22 20:01:00.000962 [DVR] Finished job 1632337200-36 DC's Legends of Tomorrow
2021/09/22 20:01:00.047000 [DVR] Waiting 28m59.953008196s until next job 1632342600-107 Decked Out
2021/09/22 20:01:00.095217 [DVR] Processing file-13442: TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg
2021/09/22 20:01:00.229743 [IDX] Generating video index for file-13442: DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg
2021/09/22 20:01:01.247217 [DVR] Starting job 1632340800-107 Decked Out on ch=[66.6]
2021/09/22 20:01:01.247257 [DVR] Waiting 28m58.752746182s until next job 1632342600-107 Decked Out
2021/09/22 20:01:04.025534 [IDX] Finished video index generation for file-13442 in 3s
2021/09/22 20:01:04.044410 [DVR] Running commercial detection on file 13442 (TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg)

Info from the web UI about the recording:

Duration
26 min

Bit Rate
5,052,600 bits/sec

File Size
948,600,408 bytes

File ID
13442

Streaming Index
Up to date

Channel

SKY1
ch9324 SKY11200×628
9324 SKY1

TV/DC's Legends of Tomorrow/DC's Legends of Tomorrow S06E13 Silence of the Sonograms 2021-09-22-1900.mpg

Track #0: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
1280x720   16:9   yuv420p   progressive   25.00fps

Track #1: AAC (Advanced Audio Coding)
stereo     156.761kbps