2-way audio with ICSee/dvrip cameras

[felipecrs]

Many cheap chinese cameras are using this ICSee. I bought this one: https://aliexpress.com/item/1005005731238053.html

It's relatively good, although it does not have the capability of changing the stream codec from H265 to H264.

But I have another ICSee based camera as well.

The app is good as well. A lot better than Tuya.

It looks like these cameras uses the DVRIP protocol. My RTSP URLs looks like:

rtsp://192.168.1.21:554/user=tema_password=<password>_channel=0_stream=0&onvif=0.sdp

It would be awesome if 2-way audio could work with it.

[felipecrs]

2-way audio works through its web UI:

Although it requires the installation of a "VideoPlayTool" to properly open it.

@AlexxIT if someday you are interested in implementing this I can give you direct access to the camera.

[felipecrs]

Oh, and by the way DVRIP source also works with this camera:

streams:
  icsee_camera:
    - dvrip://tema:<password>@192.168.1.21:34567?channel=0&subtype=1

Meaning that maybe the support for 2-way audio could be general for any DVRIP-based camera.

[slydiman]

Agreed. It would be great to support 2-way audio for DVRIP/XM/Sofia-based cameras.

[Djeloan]

Oh yes! I was trying to do it but couldn't ... i can talk trough that xmeye application tho.

[slydiman]

Oh yes!

@Djeloan, Please vote on the initial message at the top of this page. The author must see that it is important enhancement.

[slydiman]

Here is the Talk command implementation for DVRIP protocol
https://github.com/667bdrm/sofiactl/blob/master/sofiactl.pl#L2286
The source file must be PCM G711 ALAW 8kHz mono.

    $decoded = $dvr->PrepareGenericCommand(IPcam::TALK_CLAIM, { # 1434
        Name => 'OPTalk',
        OPTalk => {
            Action => "Claim",
            AudioFormat => {
                BitRate => 128,
                EncodeType => "G711_ALAW",
                SampleBit => 8,
                SampleRate => 8000
            }
        }
    });

    $decoded = $dvr->PrepareGenericCommand(IPcam::TALK_REQ, { # 1430
        Name => 'OPTalk',
        OPTalk => {
            Action => "Start",
            AudioFormat => {
                BitRate => 128,
                EncodeType => "G711_ALAW",
                SampleBit => 8,
                SampleRate => 8000
            }
        }
    });

    if ($cfgInputFile ne '') {
        my $size = -s $cfgInputFile;
        print "File size: $size\n";
        my $count = 0;
        open(IN, "< $cfgInputFile");
        while ($count < $size) {
            my $data;
            read(IN, $data, 320);
            #print $data . "\n";
            $count += 320;
            my $audio_pkt = $dvr->BuildRawPacket(IPcam::TALK_CU_PU_DATA, # 1432
                pack('CCCCCCS', (0x00, 0x00, 0x01, 0xFA, 0x0E, 0x02, 320)) . $data);  # 320 bytes 40ms audio to camera
            $dvr->{socket}->send($audio_pkt);

            my $reply_head = $dvr->GetReplyHead();  # 1433
            $dvr->GetReplyData($reply_head);  # 8+160 bytes data - 20ms mic audio from camera
        }
        close(IN);
    }

[AlexxIT]

Supported in latest master:

streams:
  stream: dvrip://username:password@192.168.1.123:34567
  tts_only: dvrip://username:password@192.168.1.123:34567?backchannel=1
  two_way:
    - dvrip://username:password@192.168.1.123:34567
    - dvrip://username:password@192.168.1.123:34567?backchannel=1

[felipecrs]

OMG this is amazing. I will test it asap.

[Djeloan]

Supported in latest master:

Means that will be available in some next update or the current one (1.7.1) ?
Tested it now, but couldn't get it to work, so im guessing it's in the next update

[felipecrs]

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