Feature request: Allow custom media input

[palashgo]

Is your feature request related to a problem? Please describe.
The emulated devices that the library creates contain synthetically generated media which is not configurable. Certain use case would require control over the media source

Describe the solution you'd like
Allow users of the library to provide a custom video / audio file to be used as the media source instead

[SoldierCorp]

Hi @palashgo

I would like to contribute to your project. But I have a couple of questions first.

• Could you please explain the expected flow for adding the custom audio/video?
• Should those custom videos/audios work within the same session only, or are they going to be uploaded somewhere else?

[palashgo]

@SoldierCorp

The API to add a device currently looks like this

navigator.mediaDevices.addEmulatedDevice('videoinput')

addEmulatedDevice(
        kind: MediaDeviceKind,
        capabilities?: EmulatedAudioDeviceCapabilities | EmulatedVideoDeviceCapabilities,
    )

Ideally we can modify the second parameter to be a generic configuration which will have capabilities and sourceUrl parameter

navigator.mediaDevices.addEmulatedDevice('videoinput', { 
    capabilities: ...,
    sourceUrl: "https://example.com/video.mp4" 
})

You don't have to deal with uploading the videos anywhere, the consumers of the library will handle that

[SoldierCorp]

Thank you @palashgo!

How about the changes for the UI like, where do you need the button to add that custom file, what the user should see after adding that custom file?

[palashgo]

How about the changes for the UI like, where do you need the button to add that custom file, what the user should see after adding that custom file?

The UI is just an example app, that's good to have but not essential for this feautre