Is it possible/good practice to not get blobs after certain intervals, but rather as one full webm file after hitting stop? about mediastreamrecorder

[muaz-khan]

Actually MediaStreamRecorder is a modified version of RecordRTC. You should try RecordRTC instead:

• https://github.com/muaz-khan/RecordRTC

RecordRTC provides startRecording/stopRecording methods:

• http://recordrtc.org/RecordRTC.html

[muaz-khan]

Just for clarifications, MediaStreamRecorder also provides "stop" method:

var mediaRecorder = new MediaStreamRecorder(stream);
mediaRecorder.mimeType = 'video/webm';
mediaRecorder.start(60 * 60 * 1000); // 1 hour recording

btnStopRecording.onclick = function() {
    mediaRecorder.stop(); // stop any time!
};

[stevemccann]

Much thanks. I actually happened to find RecordRTC just after I posted this.

I'm currently unclear - does the PHP-and-FFmpeg work with Chrome to capture audio + video at the same time?

[muaz-khan]

In Chrome

RecordRTC can merely record audio as "WAV" and video as "WebM".

So, we always need a media processing mechanism to combine/merge both files in one.

All following demos are using ffmpeg on server side for encodnig/muxing job:

• PHP-and-FFmpeg
• RecordRTC-over-Socketio
• RecordRTC-to-Nodejs

There are some demos that are using ffmpeg-asm.js to encode/decode inside the browser:

• https://github.com/muaz-khan/WebRTC-Experiment/tree/master/ffmpeg

In Firefox

Firefox is supporting recording of both audio+video in single WebM or Mp4 container. Firefox also supports Audio-only recording in Ogg container. So we don't need any ffmpeg solution to merge files.

[stevemccann]

Ok, thanks for the clarification. So in Chrome Audio + Video can be recorded at the same time, sent to the server and merged.

It also appears that RecordRTC.js is in two different repositories? I'll use https://github.com/muaz-khan/RecordRTC for my current work as I imagine it will be the most current versions.

[Param-Harrison]

In RecordRTC, if we record more than 10minutes or so, chrome crashes? Any idea, How to rectify this...

[muaz-khan]

Use MediaStreamRecorder.js and concatenate blobs on node.js server using ffmpeg. You can even migrate this library:

• https://github.com/muaz-khan/ConcatenateBlobs

Unit32Array/Float64Array/ArrayBuffer: All types are having limitations.

[chanesteves]

Hi there,

Do you have version of this for IE and/or Edge?

[muaz-khan]

StereoAudioRecorder.js ( this one as well ) is supported on Edge however there is NO-support for IE.

[hoangbienit]

Dear Muaz-Khan,
I recorded video and uploaded to web server as blob in each 2 seconds. In the uploads folder have many video files ater recording.
How to concatenate all video files to 1 file?

Thank you so much,
Bien