# Video Bitrate Parameters

They are separated in two groups: [source side](#source-side-options) (push) options for the sender of the video and [viewer side](#viewer-side-options) (view) options for the viewer of the video. Some of them are especially for rooms.

Viewer-side `&videobitrate` overrides the sender default from `&outboundvideobitrate`, while `&maxvideobitrate` remains a software-enforced cap. Room-level limits still apply where relevant.

Depending on browser/negotiation, `&videobitrate` and `&outboundvideobitrate` can also be enforced via SDP munging and may act as caps.

## Source side options

You have to add them to the source side ([`&push`](/advanced-settings/setup-parameters/push.md)).

<table><thead><tr><th width="150">Parameter</th><th>Explanation</th></tr></thead><tbody><tr><td><a href="/pages/-MZXYKYAzmk-2IPAChP1"><code>&#x26;outboundvideobitrate</code></a></td><td>Default target video bitrate for outgoing streams</td></tr><tr><td><a href="/pages/-MZXed7af4kF83c7mG52"><code>&#x26;maxvideobitrate</code></a></td><td>Hard max video bitrate out for this publisher, per stream</td></tr><tr><td><a href="/pages/-Mc_ovh3qRr03xmQCgII"><code>&#x26;limittotalbitrate</code></a></td><td>Limits the total outbound bitrate</td></tr><tr><td><a href="/pages/-MZdueG-xlDdmduppyVy"><code>&#x26;controlroombitrate</code></a></td><td>Allows a guest to control their total room video bitrate dynamically from the settings panel (under video settings)</td></tr><tr><td><a href="/pages/-MZXdQ1oejGAaFI1mepm"><code>&#x26;roombitrate</code></a></td><td>Limits any guest viewer in the group chat room from pulling the video stream at more than the specified bitrate value</td></tr><tr><td><a href="/pages/tkxDQxgcyIBofqVrjZsU"><code>&#x26;maxbandwidth</code></a></td><td>Judges the available bandwidth of a sender's connection</td></tr></tbody></table>

## **Viewer side options**

You have to add them to the viewer side ([`&room`](/advanced-settings/setup-parameters/room.md) or [`&view`](/advanced-settings/mixer-scene-parameters/view.md) or [`&scene`](/advanced-settings/mixer-scene-parameters/scene.md) or [`&solo`](/advanced-settings/mixer-scene-parameters/and-solo.md)).

<table><thead><tr><th width="150">Parameter</th><th>Explanation</th></tr></thead><tbody><tr><td><a href="/pages/-MZdsHq8G6aE_RlY7fWi"><code>&#x26;videobitrate</code></a></td><td>Sets the "desired target" bitrate in kbps</td></tr><tr><td><a href="/pages/2HhO2XRa0neM2bZJu2nJ"><code>&#x26;totalscenebitrate</code></a></td><td>Max. video bitrate a scene uses</td></tr><tr><td><a href="/pages/-MZdvtBaFUhrjd8ttCqN"><code>&#x26;totalroombitrate</code></a></td><td>The total bitrate a guest in a room can view video streams with</td></tr><tr><td><a href="/pages/K4uj8nuCO1AEmFbqLs7a"><code>&#x26;totalbitrate</code></a></td><td>Sets both <a href="/pages/2HhO2XRa0neM2bZJu2nJ"><code>&#x26;totalscenebitrate</code></a> and <a href="/pages/-MZdvtBaFUhrjd8ttCqN"><code>&#x26;totalroombitrate</code></a> flags</td></tr><tr><td><a href="/pages/CsEdPFBX7yVt0MdNc5Bd"><code>&#x26;zoomedbitrate</code></a></td><td>Lets you set the target bitrate for a guest when they 'zoom in' (fullscreen) on a video</td></tr><tr><td><a href="/pages/-MZdvM97l9MTgi44JRKW"><code>&#x26;optimize</code></a></td><td>Video bitrate reduced when the video is not visible in OBS (not active in a scene)</td></tr><tr><td><a href="/pages/ryAJzNkbwYkuLGIWH2jK"><code>&#x26;screensharebitrate</code></a></td><td>Lets you manually set the video bitrate for screen-shares</td></tr></tbody></table>

## Room-only and mobile room options

These parameters are for guest room calls where mobile device safety and mesh-network load matter.

| Parameter                                                                                                            | Explanation                                                             |
| -------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| [`&roomtier1bitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/roomtier1bitrate.md)         | Automatic room-only total bitrate tier for weaker mobile devices        |
| [`&rt1b`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/rt1b.md)                                 | Short alias for `&roomtier1bitrate`                                     |
| [`&roomonlylowbitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/roomonlylowbitrate.md)     | Alias for `&roomtier1bitrate`                                           |
| [`&rolb`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/rolb.md)                                 | Short alias for `&roomtier1bitrate`                                     |
| [`&roomtier2bitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/roomtier2bitrate.md)         | Automatic room-only total bitrate tier for normal or stronger devices   |
| [`&rt2b`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/rt2b.md)                                 | Short alias for `&roomtier2bitrate`                                     |
| [`&roomonlybitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/roomonlybitrate.md)           | Alias for `&roomtier2bitrate`                                           |
| [`&rob`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/rob.md)                                   | Short alias for `&roomtier2bitrate`                                     |
| [`&maxmobilebitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/and-maxmobilebitrate.md)     | Normal mobile sender cap for guest room publishing                      |
| [`&lowmobilebitrate`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/and-lowmobilebitrate.md)     | Lower fallback mobile sender cap for older or overloaded mobile devices |
| [`&nomobilebitratecap`](/advanced-settings/video-bitrate-parameters/and-totalscenebitrate/and-nomobilebitratecap.md) | Disables only the mobile sender bitrate safety cap                      |

{% hint style="info" %}
Automatic room-only tiers are meant for guest-only conferencing rooms. If a director or scene viewer is connected, use explicit room or scene bitrate parameters instead.
{% endhint %}

## Related

{% content-ref url="/pages/2sMgzgRpMONN0QYeQ2X9" %}
[Room-only mobile bitrate tiers](/guides/room-only-mobile-bitrate-tiers.md)
{% endcontent-ref %}

{% content-ref url="/pages/8t8sWKfTgXYwcudZ9zCO" %}
[Video Parameters](/advanced-settings/video-parameters.md)
{% endcontent-ref %}

{% content-ref url="/pages/cmIArVZ1ZIIeKoPAl7As" %}
[Video bitrate in rooms](/guides/video-bitrate-in-rooms.md)
{% endcontent-ref %}

{% content-ref url="/pages/wJQGxl0KrTeLughBKsSK" %}
[Video bitrate for push/view links](/guides/video-bitrate-for-push-view-links.md)
{% endcontent-ref %}


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