Demultiplexer - 简写Demux，解复用器，也叫数据分配器 其实是两对概念：Encoder/Decoder是跟code（码）相关的正反两个操作，Mux/Demux ...

Android decodes MP3 but can't encode it: no platform encoder, no muxer support. Four workarounds compared: AAC, bundled LAME, ...

Sarvam AI's Saaras V4 speech-to-text covers 22 Indian languages, adds keyterm prompting, 5 output modes, sub-150 ms streaming.