Telegram video does not play in iOS, but plays in Windows

[BeybarsKZ]

Hello everyone. Please tell me how to solve the problem... The task: to receive video (with sound) in Telegram from the Hikvision DS-KV8113-WME1 video intercom when there is a call. I did everything: I received a call event via Hikvision doorbell, I received a stream from the camera with sound via native go2rtc, sending video to Telegram also worked:

- data:
url: >-
http://localhost:1984/api/stream.mp4?src=hikvision_door_station&mp4=flac&duration=15&filename=record.mp4
target: xxxxxxxxx
caption: Call
action: telegram_bot.send_video

The video arrives in Telegram, BUT it does not play on iOS (there is a static picture and sound). I checked it in Telegram (Windows version) and it plays both video and sound normally. How can I make it play in iOS?

[AlexxIT]

You need to attach a file to the issue for review. You can cover the camera with a cloth.

[BeybarsKZ]

Im sorry - this is my first time opening an issue

go2rtc file:

streams:
  hikvision_door_station:
     - rtsp://admin:***192.168.22.14:554/Streaming/Channels/101
     - isapi://admin:***192.168.22.14:80/

HA front-end card:

type: custom:webrtc-camera
url: hikvision_door_station

In home assistant I see the video of the camera and hear the sound that the camera transmits

part of automatization:
      - conditions:
          - condition: trigger
            id:
              - hikvision_doorbell_ring
        sequence:
          - data:
              url: http://localhost:1984/api/frame.mp4?src=hikvision_door_station
              target: -******
              caption: Звонок в дверь
            action: telegram_bot.send_photo
          - data:
              url: >-
                http://localhost:1984/api/stream.mp4?src=hikvision_door_station&mp4=flac&duration=15&filename=record.mp4
              target: -******
              caption: Звонок в дверь
            action: telegram_bot.send_video

Sorry, I don't know how to attach the final file that was sent to telegram.

[AlexxIT]

You can open this link in any browser. But use server IP address instead of localhost.
Also you should have duration and filename params in the URL.

[BeybarsKZ]

I did it )
https://drive.google.com/file/d/1nizxKOKb_WiesKdvs_sEsmJ2NtS06Dfs/view?usp=drive_link

[AlexxIT]

You need to open access to this file.

[BeybarsKZ]

Sorry. Done.

[AlexxIT]

I'm confirming the problem. The video does not play in QuickTime at all. Some kind of problem with the stream from the camera.

Can you show stream probe from the go2rtc WebUI?

[BeybarsKZ]

{
  "producers": [
    {
      "id": 132,
      "format_name": "rtsp",
      "protocol": "rtsp+tcp",
      "remote_addr": "192.168.22.20:554",
      "url": "rtsp://admin:[email protected]:554/Streaming/Channels/101",
      "sdp": "v=0\r\no=- 1737239956950932 1737239956950932 IN IP4 192.168.22.20\r\ns=Media Presentation\r\ne=NONE\r\nb=AS:5100\r\nt=0 0\r\na=control:rtsp://192.168.22.20:554/Streaming/Channels/101/\r\nm=video 0 RTP/AVP 96\r\nb=AS:5000\r\na=control:rtsp://192.168.22.20:554/Streaming/Channels/101/trackID=1\r\na=rtpmap:96 H264/90000\r\na=fmtp:96 profile-level-id=420029; packetization-mode=1; sprop-parameter-sets=\r\nm=audio 0 RTP/AVP 8\r\nb=AS:50\r\na=control:rtsp://192.168.22.20:554/Streaming/Channels/101/trackID=2\r\na=rtpmap:8 PCMA/8000\r\na=Media_header:MEDIAINFO=494D4B48010100000400010011710110401F0000000;\r\na=appversion:1.0\r\n",
      "user_agent": "go2rtc/1.9.8",
      "medias": [
        "video, recvonly, H264",
        "audio, recvonly, PCMA/8000"
      ],
      "receivers": [
        {
          "id": 134,
          "codec": {
            "codec_name": "h264",
            "codec_type": "video"
          },
          "childs": [
            135,
            140
          ],
          "bytes": 2711852,
          "packets": 2229
        },
        {
          "id": 137,
          "codec": {
            "codec_name": "pcm_alaw",
            "codec_type": "audio",
            "sample_rate": 8000
          },
          "childs": [
            138,
            141
          ],
          "bytes": 148800,
          "packets": 465
        }
      ],
      "bytes_recv": 2893700
    },
    {
      "id": 2150146272,
      "format_name": "isapi",
      "protocol": "http",
      "medias": [
        "audio, sendonly, PCMA/8000"
      ],
      "senders": [
        {
          "id": 143,
          "codec": {
            "codec_name": "ANY",
            "codec_type": ""
          },
          "parent": 142
        }
      ]
    }
  ],
  "consumers": [
    {
      "id": 133,
      "format_name": "webrtc",
      "protocol": "ws",
      "user_agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/132.0.6834.78 Mobile/15E148 Safari/604.1",
      "medias": [
        "video, sendonly, H264, H265, VP8, VP9",
        "audio, sendonly, OPUS/48000/2, G722/8000, PCMU/8000, PCMA/8000, L16, PCML"
      ],
      "senders": [
        {
          "id": 135,
          "codec": {
            "codec_name": "h264",
            "codec_type": "video"
          },
          "parent": 134,
          "bytes": 2711852,
          "packets": 2229
        },
        {
          "id": 138,
          "codec": {
            "codec_name": "pcm_alaw",
            "codec_type": "audio",
            "sample_rate": 8000
          },
          "parent": 137,
          "bytes": 40960,
          "packets": 128,
          "drops": 337
        }
      ]
    },
    {
      "id": 139,
      "format_name": "probe",
      "protocol": "http",
      "remote_addr": "172.30.32.2:45510 forwarded 2.73.209.64, 172.30.33.8, 172.30.32.1",
      "user_agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/132.0.6834.78 Mobile/15E148 Safari/604.1",
      "medias": [
        "video, sendonly, ALL",
        "audio, sendonly, ALL",
        "audio, recvonly, ANY"
      ],
      "receivers": [
        {
          "id": 142,
          "codec": {
            "codec_name": "ANY",
            "codec_type": ""
          },
          "childs": [
            143
          ]
        }
      ],
      "senders": [
        {
          "id": 140,
          "codec": {
            "codec_name": "h264",
            "codec_type": "video"
          },
          "parent": 134
        },
        {
          "id": 141,
          "codec": {
            "codec_name": "pcm_alaw",
            "codec_type": "audio",
            "sample_rate": 8000
          },
          "parent": 137
        }
      ]
    }
  ]
}

[AlexxIT]

Thanks. I was expecting this.
The camera does not send codec information. And go2rtc is trying to guess it. And it's guessing wrong.
Some players don't see this as a problem. And some players can't play the video.

That's the camera's problem. It takes a lot of work to support a camera like this.

[BeybarsKZ]

It's sad to hear that. What should I do now? Can't this problem be solved in any way?

[AlexxIT]

You can use ffmpeg source for your rtsp source. It will add start delay, but fix the problem. There are no other options.

[BeybarsKZ]

Can you send me link for doc about ffmpeg in my car? Or some examples

[AlexxIT]

https://github.com/AlexxIT/go2rtc?tab=readme-ov-file#source-ffmpeg