open source

Encode multiple PCM streams into one MP4 file

Blog / July 7, 2015 October 7, 2020

I needed to concatenate multiple WAV files into one, compressed file. After searching Android API I came up with a solution using MediaMuxer, MediaCodec and MediaFormat (available since Android API 18). The code and API is relatively simple, yet useful. Basically, you have to intilialize encoder with desired parameters and feed it with PCM input …

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Android waveform visualisation

Blog / April 24, 2015 October 7, 2020

Recently, we have been working on an Android project in which we needed audio data visualisation. After doing some research, I found an open source project called Ringdroid, which among many other features offered great waveform visualisation. As I didn’t want to reinvent the wheel and Ringdroid perfectly suited my needs, I decided to adapt …

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Encode multiple PCM streams into one MP4 file

Android waveform visualisation

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