Problems recording CBS Sunday Morning on 5.1

I am having problems recording CBS News Sunday Morning. The show pixellates and the audio breaks up. It sounds almost like the audio is skipping.

Other shows on this channel record flawlessly. Other channels record flawlessly. Other shows on other channels at the same time record flawlessly. I have tried loading up all 4 tuners at the same time, including these two channels. I am unable to reproduce.

Setup:
Sources:
2 x HDFX4K

Server:
Synology DS920+
8G Ram
Expansion Unit DS517
DSM 7.2-64570 Update 1
6x Seagate ST4000VN008-2DR166
2x Seagate IronWolf510 SSD Cache
NAS is lightly loaded. Backups are not running.

There are 2 shows recording at the same time:
Channel 107.1 KGO-HD (HEVC HD)
Channel 5.1 KPIX-TV (HD)

I notice that there is are two versions of both KGO and KPIX
7.1 KGO-HD (HD) and a 107.1 KGO-HD (HEVC HD)
5.1 KPIX-TV (HD) and 105.1 KPIX-HD (HEVC HD DRM)

I should also mention that the corruption appears to be in the recording as it plays back identically on multiple clients, iPad, iPhone and AppleTV

-Drew

To verify the recording is corrupted, play it in VLC.

To see what the HDHR tuner stats were when it recorded, go into Options > View Details for the bad recording
Click the underlined File ID number
Scroll down a little and copy/paste this info into your post

"ChannelNumber":"810"
"DeviceID":"1323AADB"
"UpdatedAt":1699766861756
"Version":6
"JobTime":1699761600
"JobDuration":4380
"SignalStats":{
"SS":{
"Initial":96
"Last":96
"Min":96
"Max":97
"Sum":211863
"GoodCount":2186
"BadCount":0
}
"SNQ":{
"Initial":100
"Last":100
"Min":100
"Max":100
"Sum":218600
"GoodCount":2186
"BadCount":0
}
"SEQ":{
"Initial":100
"Last":100
"Min":100
"Max":100
"Sum":218600
"GoodCount":2186
"BadCount":0
}
"BPS":{
"Initial":2159744
"Last":3823168
"Min":2159744
"Max":4145024
"Sum":8465728736
"GoodCount":2186
"BadCount":0
}
"PPS":{
"Initial":185
"Last":327
"Min":185
"Max":355
"Sum":724794
"GoodCount":2186
"BadCount":0
}
"TSERR":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":2186
"BadCount":0
}
"NETERR":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":2186
"BadCount":0
}
"DVRBUF":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":0
"BadCount":0
}
"DVRDROP":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":0
"BadCount":0
}
"STREAMTIMEOUT":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":0
"BadCount":0
}
"Grade":{
"GoodCount":2186
"BadCount":0
}
"NetworkGrade":{
"GoodCount":2186
"BadCount":0
}
"SignalGrade":{
"GoodCount":2186
"BadCount":0
}
"StreamGrade":{
"GoodCount":2186
"BadCount":0
}
}
"BufferStats":{
"BufferPct":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":0
"BadCount":2189
}
"BufferDrop":{
"Initial":0
"Last":0
"Min":0
"Max":0
"Sum":0
"GoodCount":2189
"BadCount":0
}
}

Thanks for your response. Unfortunately I will need to wait until next week. The recording has been deleted from Channels. It is still on the NAS, and I did download it and verify that the recording is corrupted with VLC, but unless the information above is actually in the mpg file, it is lost.

-Drew

From the logs, there were OTA reception issues:

2023/11/12 08:30:00.042344 [SNR] Signal statistics for "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-12-0700.mpg": ss=69%,66%-73% snq=98%,95%-100% seq=99%,0%-100% bps=13574848,0-16494368 pps=1162,0-1411

Separately, there were also disk IO issues that caused additional data to be dropped:

2023/11/12 08:30:00.049747 [SNR] Buffer statistics for "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-12-0700.mpg": buf=18%,0%-100% drop=9%

I've reached out to silicon dust to ask about the signal issues. Do you have any suggestions on how I might track down the IO issues? I'm getting weekly health reports from my NAS that suggest all is good.

Also, why would it be just this one show? I have problems with this show every week, but everything else is flawless.

-Drew

I found the recording information in the trash and restored it.
"root":{

"ID":

"363"

"JobID":

"1699801200-13"

"RuleID":

"13"

"GroupID":

"185497"

"Path":

"TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-12-0700.mpg"

"CreatedAt":

1699801200

"FileSize":

8731410048

"Duration":

5400.073378

"Commercials":[

0

:

0.02

1

:

13.27

2

:

272.4

3

:

424.72

4

:

950.98

5

:

1058.02

6

:

1107.13

7

:

1199.33

8

:

1494.19

9

:

1581.44

10

:

1935.33

11

:

2065.32

12

:

2569.26

13

:

2721.58

14

:

2863.15

15

:

2985.78

16

:

3282.67

17

:

3402.51

18

:

3546.2000000000003

19

:

3696.35

20

:

4176.37

21

:

4314.1

22

:

4711.97

23

:

4848.74

24

:

5036.7300000000005

25

:

5173.2300000000005

26

:

5248.24

27

:

5399.92

]

"Completed":

true

"Processed":

true

"Airing":{

"Source":

"tms"

"Channel":

"5.1"

"OriginalDate":

"2023-11-12"

"Time":

1699801200

"Duration":

5400

"Title":

"CBS News Sunday Morning"

"Summary":

"Filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars."

"FullSummary":

"The changing role of men and boys in American society; filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars help forecast the weather in Banner Elk, N.C.; Israelis use of robots in the tunnels Hamas built in Gaza."

"Image":

"https://tmsimg.fancybits.co/assets/p185497_b_h9_ak.jpg?w=720&h=540"

"Categories":[

0

:

"Episode"

1

:

"Series"

]

"Genres":[

0

:

"Talk"

1

:

"Newsmagazine"

]

"Tags":[

0

:

"New"

1

:

"HD"

2

:

"Dolby Digital"

3

:

"CC"

]

"SeriesID":

"185497"

"ProgramID":

"EP000191281657"

"EpisodeNumber":

45

"Cast":[

0

:

"Jane Pauley"

1

:

"Mo Rocca"

2

:

"Bradley Cooper"

]

"ReleaseYear":

2023

"Raw":{

"startTime":

"2023-11-12T15:00Z"

"endTime":

"2023-11-12T16:30Z"

"duration":

90

"channels":[

0

:

"5.1"

]

"stationId":

"19572"

"qualifiers":[

0

:

"CC"

1

:

"HD 1080i"

2

:

"HDTV"

3

:

"New"

4

:

"Stereo"

]

"program":{

"tmsId":

"EP000191281657"

"rootId":

"25588928"

"seriesId":

"185497"

"entityType":

"Episode"

"subType":

"Series"

"title":

"CBS News Sunday Morning"

"titleLang":

"en"

"episodeNum":

45

"releaseYear":

2023

"releaseDate":

"2023-11-12"

"origAirDate":

"2023-11-12"

"descriptionLang":

"en"

"shortDescription":

"Filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars."

"longDescription":

"The changing role of men and boys in American society; filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars help forecast the weather in Banner Elk, N.C.; Israelis use of robots in the tunnels Hamas built in Gaza."

"topCast":[

0

:

"Jane Pauley"

1

:

"Mo Rocca"

2

:

"Bradley Cooper"

]

"genres":[

0

:

"Talk"

1

:

"Newsmagazine"

]

"preferredImage":{

"uri":

"https://tmsimg.fancybits.co/assets/p185497_b_h9_ak.jpg?w=720&h=540"

"height":

"540"

"width":

"720"

"primary":

"true"

"category":

"Banner-L1"

"text":

"yes"

"tier":

"Series"

}

}

}

}

"ChannelNumber":

"5.1"

"DeviceID":

"10A460DB"

"UpdatedAt":

1699850741675

"Version":

6

"JobTime":

1699801200

"JobDuration":

5400

"SignalStats":{

"SS":{

"Initial":

71

"Last":

69

"Min":

66

"Max":

73

"Sum":

187474

"GoodCount":

2691

"BadCount":

0

}

"SNQ":{

"Initial":

99

"Last":

98

"Min":

95

"Max":

100

"Sum":

265515

"GoodCount":

2691

"BadCount":

0

}

"SEQ":{

"Initial":

0

"Last":

100

"Min":

0

"Max":

100

"Sum":

269000

"GoodCount":

2690

"BadCount":

1

}

"BPS":{

"Initial":

0

"Last":

13030656

"Min":

0

"Max":

16494368

"Sum":

36529917536

"GoodCount":

2690

"BadCount":

1

}

"PPS":{

"Initial":

0

"Last":

1115

"Min":

0

"Max":

1411

"Sum":

3127561

"GoodCount":

2690

"BadCount":

1

}

"TSERR":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

0

"Sum":

0

"GoodCount":

2691

"BadCount":

0

}

"NETERR":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

0

"Sum":

0

"GoodCount":

2691

"BadCount":

0

}

"DVRBUF":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

0

"Sum":

0

"GoodCount":

0

"BadCount":

0

}

"DVRDROP":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

0

"Sum":

0

"GoodCount":

0

"BadCount":

0

}

"STREAMTIMEOUT":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

0

"Sum":

0

"GoodCount":

0

"BadCount":

0

}

"Grade":{

"GoodCount":

2691

"BadCount":

0

}

"NetworkGrade":{

"GoodCount":

2691

"BadCount":

0

}

"SignalGrade":{

"GoodCount":

2691

"BadCount":

0

}

"StreamGrade":{

"GoodCount":

2691

"BadCount":

0

}

}

"BufferStats":{

"BufferPct":{

"Initial":

0

"Last":

0

"Min":

0

"Max":

100

"Sum":

50397

"GoodCount":

527

"BadCount":

2172

}

"BufferDrop":{

"Initial":

0

"Last":

431261008

"Min":

0

"Max":

3284844

"Sum":

431261008

"GoodCount":

2448

"BadCount":

251

}

}

"CommercialsAligned":

true

"CommercialDetectSource":

"local"

"Watched":

true

"PlayedAt":

1699822395917

}

Looks better like this :smile:

{
    "ID": "363",
    "JobID": "1699801200-13",
    "RuleID": "13",
    "GroupID": "185497",
    "Path": "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-12-0700.mpg",
    "CreatedAt": 1699801200,
    "FileSize": 8731410048,
    "Duration": 5400.073378,
    "Commercials": [0.02, 13.27, 272.4, 424.72, 950.98, 1058.02, 1107.13, 1199.33, 1494.19, 1581.44, 1935.33, 2065.32, 2569.26, 2721.58, 2863.15, 2985.78, 3282.67, 3402.51, 3546.2000000000003, 3696.35, 4176.37, 4314.1, 4711.97, 4848.74, 5036.7300000000005, 5173.2300000000005, 5248.24, 5399.92],
    "Completed": true,
    "Processed": true,
    "Airing": {
        "Source": "tms",
        "Channel": "5.1",
        "OriginalDate": "2023-11-12",
        "Time": 1699801200,
        "Duration": 5400,
        "Title": "CBS News Sunday Morning",
        "Summary": "Filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars.",
        "FullSummary": "The changing role of men and boys in American society; filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars help forecast the weather in Banner Elk, N.C.; Israelis use of robots in the tunnels Hamas built in Gaza.",
        "Image": "https://tmsimg.fancybits.co/assets/p185497_b_h9_ak.jpg?w=720&h=540",
        "Categories": ["Episode", "Series"],
        "Genres": ["Talk", "Newsmagazine"],
        "Tags": ["New", "HD", "Dolby Digital", "CC"],
        "SeriesID": "185497",
        "ProgramID": "EP000191281657",
        "EpisodeNumber": 45,
        "Cast": ["Jane Pauley", "Mo Rocca", "Bradley Cooper"],
        "ReleaseYear": 2023,
        "Raw": {
            "startTime": "2023-11-12T15:00Z",
            "endTime": "2023-11-12T16:30Z",
            "duration": 90,
            "channels": ["5.1"],
            "stationId": "19572",
            "qualifiers": ["CC", "HD 1080i", "HDTV", "New", "Stereo"],
            "program": {
                "tmsId": "EP000191281657",
                "rootId": "25588928",
                "seriesId": "185497",
                "entityType": "Episode",
                "subType": "Series",
                "title": "CBS News Sunday Morning",
                "titleLang": "en",
                "episodeNum": 45,
                "releaseYear": 2023,
                "releaseDate": "2023-11-12",
                "origAirDate": "2023-11-12",
                "descriptionLang": "en",
                "shortDescription": "Filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars.",
                "longDescription": "The changing role of men and boys in American society; filmmaker Bradley Cooper; singer Alicia Keys; artist Ed Ruscha; woolly bear caterpillars help forecast the weather in Banner Elk, N.C.; Israelis use of robots in the tunnels Hamas built in Gaza.",
                "topCast": ["Jane Pauley", "Mo Rocca", "Bradley Cooper"],
                "genres": ["Talk", "Newsmagazine"],
                "preferredImage": {
                    "uri": "https://tmsimg.fancybits.co/assets/p185497_b_h9_ak.jpg?w=720&h=540",
                    "height": "540",
                    "width": "720",
                    "primary": "true",
                    "category": "Banner-L1",
                    "text": "yes",
                    "tier": "Series"
                }
            }
        }
    },
    "ChannelNumber": "5.1",
    "DeviceID": "10A460DB",
    "UpdatedAt": 1699850741675,
    "Version": 6,
    "JobTime": 1699801200,
    "JobDuration": 5400,
    "SignalStats": {
        "SS": {
            "Initial": 71,
            "Last": 69,
            "Min": 66,
            "Max": 73,
            "Sum": 187474,
            "GoodCount": 2691,
            "BadCount": 0
        },
        "SNQ": {
            "Initial": 99,
            "Last": 98,
            "Min": 95,
            "Max": 100,
            "Sum": 265515,
            "GoodCount": 2691,
            "BadCount": 0
        },
        "SEQ": {
            "Initial": 0,
            "Last": 100,
            "Min": 0,
            "Max": 100,
            "Sum": 269000,
            "GoodCount": 2690,
            "BadCount": 1
        },
        "BPS": {
            "Initial": 0,
            "Last": 13030656,
            "Min": 0,
            "Max": 16494368,
            "Sum": 36529917536,
            "GoodCount": 2690,
            "BadCount": 1
        },
        "PPS": {
            "Initial": 0,
            "Last": 1115,
            "Min": 0,
            "Max": 1411,
            "Sum": 3127561,
            "GoodCount": 2690,
            "BadCount": 1
        },
        "TSERR": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 0,
            "Sum": 0,
            "GoodCount": 2691,
            "BadCount": 0
        },
        "NETERR": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 0,
            "Sum": 0,
            "GoodCount": 2691,
            "BadCount": 0
        },
        "DVRBUF": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 0,
            "Sum": 0,
            "GoodCount": 0,
            "BadCount": 0
        },
        "DVRDROP": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 0,
            "Sum": 0,
            "GoodCount": 0,
            "BadCount": 0
        },
        "STREAMTIMEOUT": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 0,
            "Sum": 0,
            "GoodCount": 0,
            "BadCount": 0
        },
        "Grade": {
            "GoodCount": 2691,
            "BadCount": 0
        },
        "NetworkGrade": {
            "GoodCount": 2691,
            "BadCount": 0
        },
        "SignalGrade": {
            "GoodCount": 2691,
            "BadCount": 0
        },
        "StreamGrade": {
            "GoodCount": 2691,
            "BadCount": 0
        }
    },
    "BufferStats": {
        "BufferPct": {
            "Initial": 0,
            "Last": 0,
            "Min": 0,
            "Max": 100,
            "Sum": 50397,
            "GoodCount": 527,
            "BadCount": 2172
        },
        "BufferDrop": {
            "Initial": 0,
            "Last": 431261008,
            "Min": 0,
            "Max": 3284844,
            "Sum": 431261008,
            "GoodCount": 2448,
            "BadCount": 251
        }
    },
    "CommercialsAligned": true,
    "CommercialDetectSource": "local",
    "Watched": true,
    "PlayedAt": 1699822395917
}

It looks like you only have a few shows that are having this problem:

2023/05/28 09:02:59.905227 [SNR] Buffer statistics for "TV/Formula 1 Racing/Formula 1 Racing Monaco Grand Prix 2023-05-28-0430.mpg": buf=52%,0%-100% drop=36%
2023/10/29 08:30:00.079693 [SNR] Buffer statistics for "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-10-29-0700.mpg": buf=16%,0%-100% drop=10%
2023/11/05 08:30:00.118655 [SNR] Buffer statistics for "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-05-0700.mpg": buf=21%,0%-100% drop=14%
2023/11/12 08:30:00.049747 [SNR] Buffer statistics for "TV/CBS News Sunday Morning/CBS News Sunday Morning 2023-11-12-0700.mpg": buf=18%,0%-100% drop=9%

It looks like there's something the Synology may be doing in the morning that is causing your disks to be overloaded.

Could be it scheduled a data scrubbing or disk smart tests on Sunday mornings.
I schedule my disk smart tests on Monday mornings at 12:45 AM
and no longer do data scrubbing Data Scrubbing | DSM - Synology Knowledge Center

I think it's just the first sampling you do ("Initial": 0). My HDHR Prime shows that half the time.