Does the same thing as &scale but you pass the width in pixels
video width in pixels
Added new viewer-side parameters that can be used in place of
&viewwidth=320, which effectively does the same thing as
&scale, but instead you pass a resolution.
It's important to note, that due to flexibility to request width/heights that are not aspect-ratio compatible, and due to bitrate/quality resolution limitations, these values are just 'max' target resolution values; the actual resolution you get could be still less. They also do not impact the actual capture resolution of the remote sender's camera, so its purely for requesting a specific downscaled resolution. This command applies to all video elements in a view port, and it disables the auto-scaler functionality.
Similarly, also added the option to the IFRAME API to request different down-scaled resolutions dynamically, per connection, if you want greater programmatic control vs static URL options.