What is Backup Ingest?
Setting up a backup stream helps you avoid having your broadcast cut off in case your primary stream fails. Castr will automatically switch to the backup stream in case your primary stream is interrupted.
How to use
You can enable the backup by toggling it on from Backup tab:
After enabling, you'll see two options:
Encoder Level - Use RTMP/SRT to setup the primary and secondary feeds.
File - You can check this guide.
Under Encoder Level, you will have option to select between RTMP or SRT.
You will need two separate encoders: one encoder linked to the Primary RTMP and the other linked to the Backup RTMP. It is important to match both encoders' output settings to ensure a smooth experience (bitrates, frame rates, resolutions, etc.).
When you stream to the Backup stream, the status will change to Online. This means it's ready in case the Primary stream fails:
Note: For seamless switching, please enable Adaptive bitrate transcoding in Video Settings.
Similar process needs to be followed if SRT is to be used.
Important Information
Adjusting this setting will update your current stream key. Please remember to update the new key in your streaming software to avoid interruptions.
Also, ensure you use the same encoder and identical configuration for both the primary and backup streams. Mixing different encoders or settings (e.g., OBS for primary and another tool for backup) may cause glitches or playback issues.
Limitations
Backup is best for streaming Castr embeddable players and social media destinations. It is best to test your stream before the live time if you want to use Backup.
The Primary ingests need to be started first to make the failover work; if the primary ingest fails, the stream will fail over to the backup. For smooth switching in your stream, please enable ABR.
The Backup feature is included with Ultra plan only.