Hi Ross. I recently use live555 to relay PCMU rtp streaming from a media server to a rtsp client. and pcmu streaming works well on VLC streaming player. but now we need to relay the PCMU streaming to cellphone, and lots of cellphone streaming player don't support PCMU codec. so we have to transcode the PCMU streaming to AAC streaming. and send the AAC streaming to RTSP client. I search on the internet and find out that ffmpeg can transcode PCM to AAC. but I don't know how to use ffmpeg to do it. so if there are some demo about this can help me.
the framework of my codes as below: 1. use SimpleRTPSource to get the PCM streaming. 2. if I need to use ffmpeg to create a new subclass of FramedFiliter to transcode the streaming, and how to use ffmpeg? 3. use AC3audioRTPSink to relay.
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