feat(android): add videoBitrate option for recordAsync

[andrew-schenk]

While VideoQuality can be set, this option does not give developers anyway to fine-tune the resulting file size of a recorded video. 720p recording will use a 12 Mbps bitrate on a Galaxy S8+, even though 720p should be closer to 5 Mbps.

Introducing a new optional recording option helps to solve this problem.
targetBitrate takes an integer value (e.g. 1000 x 1000 x 5 aka 5Mbps).

Example of calling it from React Native

const recordingOptions = {
          maxDuration: 60*20,
          mute: false,
          quality: RNCamera.Constants.VideoQuality['720p'],
          targetBitrate: 1000*1000*5 // 5 Mbps
};
const data = await this.camera.recordAsync(recordingOptions);

[sibelius]

What happens when user does not pass it?

[andrew-schenk]

It falls back to default behavior, as if this code was never implemented.

…

On Jan 16, 2019, at 10:44 AM, Sibelius Seraphini ***@***.***> wrote: @sibelius approved this pull request. What happens when user does not pass it? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#2055 (review)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AlQSbczqNFFQN3vwWqMC3GM1GOV9tXDAks5vD1bVgaJpZM4aDelH>.

[n1ru4l]

@andrewschenk-linx Could you please add types and documentation

[andrew-schenk]

Added documentation and types.

[n1ru4l]

After thinking about it a bit I think we can name it videoBitrate instead of targetBitrate.

Can you please rename it? I will merge it aftwerwards!

[n1ru4l]

:tada: This PR is included in version 1.9.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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