If a player is using BrightSign OS version 6.2, the method described below requires The methods described below require BrightSign OS version 6.2.147 or later.
Modify the Latency and Jitter of Audio/Video Streams
You can modify the amount of time it takes for audio/video streams to begin playback by formatting the stream URL as follows: <streaming_url>?latency=<value_in_ms>&jitter=<value_in_ms>. For example, http://www.example.com/stream1?latency=-450&jitter=50
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You can also increase the latency value beyond 0. This will increase the size of the streaming buffer and delay playback. Increasing latency to 10 seconds or more will likely require use of the vcdbsize and acdbsize parameters to increase the memory allocated to the buffer.
Customize the Streaming Buffer Size
You can modify the default buffer sizes associated with incoming audio/video streams. Increasing the buffer can help improve the performance of high-bitrate video streams or audio/video that is being streamed over a slow network.
Note that increasing the buffer size will also increase the playback delay (latency) when the stream begins, but decreasing the default buffer size will not shorten it. View this FAQ to learn more about reducing the default latency.
You can modify the default buffer size by appending optional parameters to the end of a streaming URL in a BrightAuthor Video Stream or Audio Stream state (this method also applies to custom scripts). The URL parameters must be formatted as follows: <streaming_url>?buffersize=<number>&vcdbsize=<number>&acdbsize=<number>. Forexample, http://www.example.com/stream1?buffersize=10000000&vcdbsize=10000000&acdbsize=256000
Note that all buffer sizes are specified in bytes.
buffersize: The size of the main buffer. Once streaming data comes into the main buffer, it is immediately split into the audio and video buffers. The default size of the main buffer is 1.5MB for HD models, 3MB for XD models, and 6MB for 4K models.
vcdbsize: The size of the video-coded data buffer. The default size of this buffer is 3MB for HD models, 3MB for XD models, and 6MB for 4K models.
acdbsize: The size of the audio-coded data buffer. The default size of this buffer is 256KB for all models.