MediaStream Recording sample doesn't work on Firefox 42

[soulfly]

I just got

 MediaRecorder is not supported by this browser.

 Try Firefox 29 or later, or Chrome 47 or later, with Enable experimental Web Platform features enabled from chrome://flags.

but I use Firefox 42

any ideas?

[samdutton]

Thanks for reporting this.

Not sure what's going wrong... I just tried in Firefox 42 on Mac without any problem.

What OS are you on? What error do you see in the console? Do you get local video OK (in the left-hand video element)?

[soulfly]

I use OS X 10.11.1

 Do you get local video OK (in the left-hand video element)?

yes

here is an exception in log:

 Exception while creating MediaRecorder: TypeError: Argument 2 of MediaRecorder.constructor can't be converted to a dictionary.

 stack trace:
 startRecording@https://simpl.info/mediarecorder/js/main.js:93:21
 toggleRecording@https://simpl.info/mediarecorder/js/main.js:81:5

[samdutton]

Got it — I'd messed around with setting the codec in MediaRecorder constructor and broken it for Firefox.

For the second constructor argument, Firefox requires a dictionary (Object), whereas Chrome accepts a string.

Should be fixed now. Let me know if you still get errors.

Thanks again!

[soulfly]

Still have some issues here https://simpl.info/mediarecorder/

Now it's different

 Created MediaRecorder MediaRecorder { stream: LocalMediaStream, state: "inactive", mimeType: "video/vp9", ondataavailable: null, onerror: null, onstart: null, onstop: null, onwarning: null } with options    Object { mimeType: "video/vp9" } main.js:106:3
 MediaRecorder started MediaRecorder { stream: LocalMediaStream, state: "recording", mimeType: "video/vp9", ondataavailable: handleDataAvailable(), onerror: null, onstart: null, onstop: handleStop(), onwarning: null } main.js:114:3

 State should be "inactive" main.js:70:1  <-- error
 handleDataAvailable() main.js:70

[samdutton]

Hi — thanks for that.

The assert statements were actually left over from the initial development stage. I've removed them now.