CODEWITHSUNDEEP
androidandroid-audiorecordandroid-mediacodec
xiaowoo
xiaowoo

Reputation: 2308

How do you encode a video with audio using MediaCodec

So, I have encoded a h264 elementary stream with MediaCodec by collectings the frames using Camera's onPreviewFrame method.(using Encoding H.264 from camera with Android MediaCodec). Then, I generated an mp4 video using the h264 stream. Unfortunately, it doesn't have any audio in it.

I notice that MediaCodec should also allow encoding audio because it has settings for audio codecs.

Now is there any ways to add audio to the h264 stream?

thanks for reading and would appreciate any comments or suggestions.

Upvotes: 2

Views: 4853

Answers (1)

fadden
fadden

Reputation: 52353

A given instance of MediaCodec will encode either video or audio. You would need to create a second instance of MediaCodec to do the audio encoding, and then combine the streams with the MediaMuxer class (introduced in Android 4.3, API 18).

There are examples of using MediaMuxer on bigflake, but at the time I'm writing this there isn't one that demonstrates combining audio and video (they're just "muxing" the video into a .mp4 file). It should be enough to demonstrate how to use the class though.

Upvotes: 2

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