Presets and Tuning Options
Presets
Aurora1-RTC has ten predefined presets that optimize the trade-off between encoding speed (encoded frames per second) and compression efficiency (quality per bit in the bitstream).
When you use faster presets, the encoder takes shortcuts to improve performance at the expense of quality and compression efficiency. When you use slower presets, Aurora1-RTC tests more encoding options, using more computations to achieve the best quality at your selected bit rate.
The presets adjust encoder parameters as shown in the following table. Any parameters below that are specified in your commandline will be changed from the value specified by the preset.
medium-2medium-1mediumfastfasterveryfastultrafast-2ultrafast-1ultrafast
Tune Options
Aurora1-RTC supports tuning for different kinds of content. The following options are supported:
camerascreenadaptive
Camera content covers both live and synthetic (gaming) content. The screen preset is suitable for screen share applications, especially desktop sharing, slideshows etc. The adaptive tune option automatically detects the type of content and switches between suitable coding modes. It is suitable for mixed content scenarios, for example when sharing dynamic web pages or embedded videos.