Support ability to use templates for RTSP URL.

[GaryOkie]

Currently the webrtc-camera card requires a static RTSP URL (or Entity), but it would be very useful if the URL could be dynamically defined with templates. For example, to be able to specify a specific channel for an NVR or start/end times for playback of recorded video.

Example:

type: custom:webrtc-camera
  url:>-
    rtsp://admin:password@192.168.x.x:554/cam/realmonitor?channel={{states.input_select.nvr_channel.state}}&subtype=0

There is a custom Lovelace card-templater that allows the use of HASS/Jinja templates for any card by modifying the options with a "_template" suffix. However, your webrtc-camera card rejects "url_template" saying "Error: missing URL or Entity".

BTW, I reported this as templater issue#59. Maybe webrtc-camera JS code could be tweaked to accept "url_template" so templating could work with very little effort?

If not, then having this card support templates natively is something I hope you can consider adding in the future.

[AlexxIT]

Added to master version. Will be in next release

[Daniel-dev22]

Added to master version. Will be in next release

The current implementation only works for detecting templates with {{ }}. Templates can also have {% %} and no {{ }} at all.

Example.

{% if true %}
doorbell
{% elif false %}
test
{% endif %}

[GaryOkie]

well, that's great! Having native Jinja2 template support is ideal. The use of other cards in conjunction with webrtc-camera for templating (eg. Lovelace_card_templater) is now not needed - a very useful simplification.

I did find later that the config-template-card does work with webrtc-camera to modify the URL, but it requires Javascript syntax, not Jinja2, which is more commonly preferred for templating.

[Aristocrat55]

Как изменить url при динамически меняющемся ip адреса у камеры?

[AlexxIT]

Should be fixed in v3