mp3 encoder? about audio-recorder-polyfill HOT 12 CLOSED

Can you send PR to docs how to use lamejs?

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Hm, interesting idea. I personally prefer Ogg Opus, but MP3 could be a easier way. Especially if we have JS pure codec.

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That was my first thought, but by default Chrome will encode audio with opus codec, but for lamejs to work we probably will have to feed wav to it?

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Yes, this would be wonderful to have. MP3 does seem to have much wider cross-browser compatibility.

WAV is also nice for cross-browser compatibility, but MP3 would be much nicer for storage space/compression.

Thanks for the link @coodoo, I'm going to try lamejs myself. I see it hasn't been maintained for a couple of years... 🤔

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It is pretty easy to just pass the wave data from this polyfill into lamejs. Use wave-encoder.js with lamejs. I have been doing that and it works great.

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@PetterS Yes, if you could that it would be great! 👏

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I did it by parsning the WAV header which is far from the best solution.

I think a much better solution would be to follow wave-encoder.js and create a mp3-encoder.js as well.

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Released 0.2 version. Thanks to @youkaclub for the work.

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Hi guys, thanks for your polyfill and for mp3 encoder, I just wanted to ask is there any workaround to make lamejs options (kbps, bitrate and channel) to be customizable? They are now hardcoded to mono channel, 44100 rate and 128kbps. I think it's nice approach to be able edit them.

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We can use this API:

MediaRecorder.encoder = require('audio-recorder-polyfill/mpeg-encoder')(opts)

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@ai, cool! Will this work with es6 imports? And when you will can implement this? Thanks.

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@dmitrybndar fixed at 0.3 with dual-publish

https://github.com/ai/audio-recorder-polyfill#mp3

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