Hi, BMediaDecoder is decodering the data of video or audio, and convert them to frames or chunks, and then put them into buffer. But I don't clearly know where and when to use BMediaEncoder. If we add this feature in MediaKit, developers will easily convert buffer data to whatever kind of audio or video. Or users save some video as audio, and then the format of the file will be changed. Do you have some ideas about where and when to use it? -chico