Ice Weasel WebRTC "Starting video failed"

[Luke Swart]

Hello,

I am having an issue accessing WebRTC video streams from the Iceweasel
browser on the Raspberry Pi. Please let me know if there is a more
appropriate place to post my issue. I have a similar post of this issue on
Stack Exchange here: http://raspberrypi.stackexchange.com/posts/36488/edit

I am trying to use my Raspberry Pi 2 and Raspberry Pi Camera
<https://www.adafruit.com/products/1367> to join a WebRTC session in the
Iceweasel browser. I was able to set up a WebRTC server on my Pi through this
tutorial <https://bloggeek.me/webrtc-raspberripi-nodejs/> and I am able to
start/join a WebRTC session on any PC with video/audio enabled.

Also, I installed UV4L
<http://www.linux-projects.org/modules/sections/index.php?op=viewarticle&artid=14>,
which enables the browser to recognize the Pi camera.

When I try to access a WebRTC session on the Pi’s Iceweasel browser,
however, the browser is unable to start the video. More specifically, the
Javascript Navigator object fails on the navigator.mozGetUserMedia() method
to start the video, returning the error “Starting video failed”. The
mozGetUserMedia is bound in this line of code
<https://github.com/buildar/getting_started_with_webrtc/blob/master/video_call_with_chat_and_file_sharing.html#L57>
and the method is called here
<https://github.com/buildar/getting_started_with_webrtc/blob/master/video_call_with_chat_and_file_sharing.html#L369-L384>
.

Can you provide guidance on getting my Pi Camera detected by WebRTC in
Iceweasel? Or is there another browser, plug-in, or update, that will
properly access my Raspberry Pi Camera’s stream?

My browser’s console output is here:

"early firefox webrtc implementation" 192.168.0.103:1234:55
"getting user media..." 192.168.0.103:1234:59
"got user media..." 192.168.0.103:1234:61
The character encoding of the HTML document was not declared. The
document will render with garbled text in some browser configurations
if the document contains characters from outside the US-ASCII range.
The character encoding of the page must be declared in the document or
in the transfer protocol. 192.168.0.103:1234
"setting up local video stream" 192.168.0.103:1234:374
"setting up connection to signaling server" 192.168.0.103:1234:153
"you are the Caller" 192.168.0.103:1234:158
"updating UI to loading_state" 192.168.0.103:1234:182
"sending 'join' signal for call token:#1442483208369-4377"
192.168.0.103:1234:172
"Starting video failed" 192.168.0.103:1234:555

Similarly, when I try to join a Firefox Hello chat in my Pi’s Iceweasel
browser, I get these debug console messages:

The Components object is deprecated. It will soon be removed. utils.js:9
"No information about this conversation is available. Please request a
new link from the person who sent it to you."
standaloneRoomViews.js:366

Use of getPreventDefault() is deprecated.  Use defaultPrevented
instead. 2768540301.js:92
"OT.Publisher.onStreamAvailableError Starting video failed: Unknown
Error while getting user media" sdk.js:3399

"OT.exception :: title: Unable to Publish (1500) msg: GetUserMedia" sdk.js:3399

1500 "Unknown Error while getting user media" sdk.js:3399

"OT.exception :: title: Unable to Publish (1500) msg: Unknown Error
while getting user media" sdk.js:3399

Error: HTTP 401 Unauthorized
Stack trace:
failureHandler at https://hello.firefox.com/js/standaloneMozLoop.js:44:9
loop.StandaloneMozLoop</StandaloneMozLoopRooms.prototype._postToRoom/xhrReq.onload<@https://hello.firefox.com/js/standaloneMozLoop.js:142:11

------------------------------

Here are some details on my setup:

[pi at raspberrypi]~$ uname -a
Linux raspberrypi 4.1.6-v7+ #2 SMP PREEMPT Fri Sep 4 16:49:07 UTC 2015
armv7l GNU/Linux

[pi at raspberrypi]~$ cat /etc/*-release
PRETTY_NAME="Raspbian GNU/Linux 7 (wheezy)"
NAME="Raspbian GNU/Linux"
VERSION_ID="7"
VERSION="7 (wheezy)"
ID=raspbian
ID_LIKE=debian
ANSI_COLOR="1;31"
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

[pi at raspberrypi]~$ iceweasel --version
Mozilla Iceweasel 31.8.0

And my camera is working fine, where I can run raspivid -t 10000 which
displays the camera’s video for 10 seconds.

My Iceweasel install supports WebRTC, which I confirmed here:
http://iswebrtcready.appear.in/
------------------------------

Any help or suggestions would be appreciated. I am happy to clarify
anything as well.

Thank you,
Luke
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