Changing Dahua Doorbell DHI-VTO2202F-P-S2 audio codec

[felipecrs]

UPDATE: I'm now using AlexxIT/go2rtc#49 (comment)

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I was about to give up after writing this comment here, but after downloading a couple of softwares for testing some ONVIF capabilities of my doorbell, I found something that was like Magic:

Happytime ONVIF Client

With this tool, I could change the audio encoding codec that the doorbell uses from the weird PCM S16BE (which is not supported by the WebRTC card by the way) to AAC or a more standard G711. I could even change the codecs for the different channels, so I did:

Channel 1: H264 720P video with G711 audio for use with WebRTC card (for real-time audio and video)

Channel 2: H264 1080P video with AAC audio for use with Frigate (which will save me some CPU cycles because I don't have to transcode the audio codec)

4SKrwspXIz.mp4

PS: I could not find a way to switch back to the original codec, but I don't mind. I suppose a firmware reset would work, but didn't try.

Previous:

After (disregard video differences):

I just wanted to document this, perhaps it helps someone in the future.

[lordCONAN]

I gave this a try, and it worked fine for a few days, but then, for seemingly no reason, the audio returned to the original codec.

[luzik]

Thanks for a hint ! This working with vto-2211g-wp

[epicurean70]

Hi, Can you share your working config for the vto221g-wp ?

much thanks!

[felipecrs]

This method has one problem, which is that it the VTO will automatically switch back to the original codec sometimes, and I don't know why. There's a better method, but it will require go2rtc:

• Dahua VTO support AlexxIT/go2rtc#49 (comment)