Hi Rob,

Firefox and Chrome are not directly compatible.  apprtc adapts them a bit
to get them to work together.  You can copy what they do from files like
this:
https://apprtc.appspot.com/js/adapter.js
https://apprtc.appspot.com/js/main.js

The bug for Bundle is here -
https://bugzilla.mozilla.org/show_bug.cgi?id=784491

Though, how some of this should work exactly is still being discussed in
the IETF standards groups MMUSIC and RTCWeb which meet next week in Berlin.

-EH



On Fri, Jul 26, 2013 at 3:55 PM, Rob Manson <[email protected]> wrote:

> Hi,
>
> I couldn't see that anyone had raised this anywhere and it seems unrelated
> to this topic on discuss-webrtc
> https://groups.google.com/forum/#!topic/discuss-webrtc/dLsbz6Xwxc0 - so I
> thought I'd share the error message I'm receiving.
>
> If you'd like me to raise this as a bug please let me know...but thought
> it might be better first as just an informational post.
>
> So setting up a video call between the latest Chrome (28.0.1500.71
> (Official Build 209842) ) and Firefox 22 & Nightly (25.0a1 (2013-07-25)) on
> Linux I get this SDP parsing error message in Firefox.
>
> "Could not negotiate media lines; cause = ERR | SDP Parsing Error:
> Warning: Group attribute type unsupported (BUNDLE). | SDP Parsing Error:
> Warning: Unrecognized attribute (msid-semantic) | SDP Parsing Error:
> Warning: Unrecognized attribute (ice-options) | SDP Parsing Error: Warning:
> Unrecognized attribute (extmap) | SDP Parsing Error: Warning: Numeric token
> for mid attribute not found | SDP Parsing Error: Warning: Invalid named
> events specified for fmtp attribute. | SDP Parsing Error: Warning:
> Unrecognized attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized
> attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized attribute
> (ssrc) | SDP Parsing Error: Warning: Unrecognized attribute (ssrc) | SDP
> Parsing Error: Warning: Unrecognized attribute (ice-options) | SDP Parsing
> Error: Warning: Unrecognized attribute (extmap) | SDP Parsing Error:
> Warning: Numeric token for mid attribute not found | SDP Parsing Error:
> Warning: Unrecognized attribute (ssrc) | SDP Parsing Error
>  : Warning: Unrecognized attribute (ssrc) | SDP Parsing Error: Warning:
> Unrecognized attribute (ssrc) | SDP Parsing Error: Warning: Unrecognized
> attribute (ssrc) "
>
> However, in the exact same app I can setup a video call between two
> Firefox tabs or separate browsers so it's definitely working OK with
> Firefox SDP.
>
> If you'd like a full copy of the Chrome SDP and related signaling please
> let me know...but I'm sure you've got a good collection of this already 8)
>
> roBman
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