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Video streaming: broadcast delay between the source and the availability of a stream
This guide explains the possible origins of any latency that you may observe between the source of a video and its live broadcast.
Availability of the result in our administration
Once your encoder is connected to our master servers, the stream may undergo several transformations, notably in the case of a transcoding or the addition of a watermark logo. In these cases, the video must be re-encoded in one or several formats, which requires time for treatment that will inevitably have repercussions on the final result.
Availability in the case of a mono-bitrate stream without retreatment
In this case, the stream is available after only a few seconds.
Availability in the case of a transcoded stream or with a watermark
This treatment takes around 25 seconds for the transformed stream to become visible in the different quality(-ies).
Latency between the source and the result for internet users
In order to avoid micro-interruptions during the broadcast, the video player places several seconds of the video in its buffer memory. You can thus easily observe 30 to 60 seconds of latency between the source and the stream provided to web users.
To reduce this latency to a minimum, the only means is via a mono-bitrate stream, with no transcoding, no watermark, with a bitrate that is not too high, and to reduce the buffer in the player configuration as much as possible. Depending on your needs, it is necessary to reach a compromise between the instantaneous character of the broadcast and the features you want to use to improve your viewers' experience and to customise the branding of your live broadcasts.