Quick update, I've talked to Paul offline today, the current architecture of processing audio samples in `DecodedStream` is pull-based, which makes us hard to implement a solution for playback rate on a realtime stream, because push-based method causes some latency. That means the playback rate won't take effect immediately. Therefore, we will need to do some work to change this behavior and make a better solution for playback. That would need more time, so sorry for the waiting.
Bug 1517199 Comment 26 Edit History
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Quick update, I've talked to Paul today, the current architecture of processing audio samples in `DecodedStream` is pull-driven, which makes us hard to implement a solution for playback rate on a realtime stream, because push-driven method causes some latency. That means the playback rate won't take effect immediately. Therefore, we will need to do some work to change this behavior and make a better solution for playback. That would need more time, so sorry for the waiting.