No play video in Firefox 34

I have licode working on Firefox 33 and now I’m testing Firefox 34 Beta
(will be Final tonight)

When firefox is viewer I receive SDP but video doesn’t start and only show
video poster.

If I load about:webrtc I see that is receiving/sending data but video has
not bitrate:

RTP statistics
inbound_rtp_audio_1

A/V sync: 0 ms Jitter-buffer delay: 63 ms
Local: 11:03:46 GMT+0100 (CET) inboundrtp SSRC: 3496515254 Received: 3976
packets (667.84 Kb) Lost: 0 Jitter: 0
Remote: 11:03:44 GMT+0100 (CET) outboundrtp SSRC: 3496515254 Sent: 10493
packets (1639.53 Kb)
inbound_rtp_video_2
Decoder: Avg. bitrate: 0.00 Mbps (0.00 SD) Avg. framerate: 0.00 fps (0.00 SD
) Discarded packets: 0
Local: 11:03:46 GMT+0100 (CET) inboundrtp SSRC: 0 Received: 3641 packets (
2999.54 Kb) Lost: undefined Jitter: undefined

Conexion is serverreflexive and I have a TURN configured and working OK
with chrome and other firefox version.

More info about PeerConnection:
Local candidate Remote candidate ICE State Priority Nominated Selected
YYY.YYY.YYY.YYY:37019/udp(host) XXX.XX.XXX.XX:47060/udp(host) failed
8646913483524145000
YYY.YYY.YYY.YYY:37019/udp(host) XXX.XX.XXX.XX:33361/udp(host) cancelled
8646913483524145000
ZZ.ZZZ.ZZZ.ZZZ:37019/udp(serverreflexive) XXX.XX.XXX.XX:47060/udp(host)
succeeded 7241788200543323000 * *
Local candidate addr Type
YYY.YYY.YYY.YYY:37019/udp host
ZZ.ZZZ.ZZZ.ZZZ:37019/udp serverreflexive
Remote candidate addr Type
XXX.XX.XXX.XX:47060/udp host
XXX.XX.XXX.XX:33361/udp host
1416910277241188 (id=78
url=http://www.beta.atheneax.com/es/classroom/live/570): stream2/video
Local candidate Remote candidate ICE State Priority Nominated Selected
YYY.YYY.YYY.YYY:52446/udp(host) XXX.XX.XXX.XX:54038/udp(host) failed
8646913483524145000
YYY.YYY.YYY.YYY:52446/udp(host) XXX.XX.XXX.XX:46884/udp(host) cancelled
8646913483524145000
ZZ.ZZZ.ZZZ.ZZZ:52446/udp(serverreflexive) XXX.XX.XXX.XX:54038/udp(host)
succeeded 7241788200543323000 * *
Local candidate addr Type
YYY.YYY.YYY.YYY:52446/udp host
ZZ.ZZZ.ZZZ.ZZZ:52446/udp serverreflexive
Remote candidate addr Type
XXX.XX.XXX.XX:54038/udp host
XXX.XX.XXX.XX:46884/udp host
Local SDP

v=0

o=Mozilla-SIPUA-32.0.2 28246 0 IN IP4 0.0.0.0

s=SIP Call

t=0 0

a=ice-ufrag:4f24ee7e

a=ice-pwd:622ac31d6a747608509b9467c439d190

a=fingerprint:sha-256
8F:D1:DD:19:3A:13:33:F2:6A:43:EC:8F:9F:B1:C5:42:7D:53:B3:D1:DF:E3:10:D1:7A:E0:75:9C:46:48:1D:04

m=audio 37019 RTP/SAVPF 109 0 8 101

c=IN IP4 ZZ.ZZZ.ZZZ.ZZZ

a=rtpmap:109 opus/48000/2

a=ptime:20

a=rtpmap:0 PCMU/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

a=recvonly

a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level

a=setup:actpass

a=candidate:0 1 UDP 2122252543 YYY.YYY.YYY.YYY 37019 typ host

a=candidate:1 1 UDP 1686110207 ZZ.ZZZ.ZZZ.ZZZ 37019 typ srflx raddr
YYY.YYY.YYY.YYY rport 37019

a=candidate:0 2 UDP 2122252542 YYY.YYY.YYY.YYY 54850 typ host

a=candidate:1 2 UDP 1686110206 ZZ.ZZZ.ZZZ.ZZZ 54850 typ srflx raddr
YYY.YYY.YYY.YYY rport 54850

a=rtcp-mux

m=video 52446 RTP/SAVPF 120

c=IN IP4 ZZ.ZZZ.ZZZ.ZZZ

a=rtpmap:120 VP8/90000

a=recvonly

a=rtcp-fb:120 nack

a=rtcp-fb:120 nack pli

a=rtcp-fb:120 ccm fir

a=setup:actpass

a=candidate:0 1 UDP 2122252543 YYY.YYY.YYY.YYY 52446 typ host

a=candidate:1 1 UDP 1686110207 ZZ.ZZZ.ZZZ.ZZZ 52446 typ srflx raddr
YYY.YYY.YYY.YYY rport 52446

a=candidate:0 2 UDP 2122252542 YYY.YYY.YYY.YYY 47145 typ host

a=candidate:1 2 UDP 1686110206 ZZ.ZZZ.ZZZ.ZZZ 47145 typ srflx raddr
YYY.YYY.YYY.YYY rport 47145

a=rtcp-mux

Remote SDP

v=0

o=- 0 0 IN IP4 127.0.0.1

t=0 0

m=audio 47060 RTP/SAVPF 0 126

c=IN IP4 XXX.XX.XXX.XX

a=rtcp:54038

a=candidate:1 1 UDP 2013266431 XXX.XX.XXX.XX 47060 typ host

a=candidate:1 2 UDP 2013266431 XXX.XX.XXX.XX 47060 typ host

a=candidate:2 1 UDP 2013266431 XXX.XX.XXX.XX 33361 typ host

a=candidate:2 2 UDP 2013266431 XXX.XX.XXX.XX 33361 typ host

a=ice-ufrag:RrTy

a=ice-pwd:nLIpfBZCo3AZmn/bPBl9rB

a=fingerprint:sha-256
E4:60:2C:4F:70:F3:5D:3C:46:BB:0F:5A:33:5B:5A:E9:02:D4:15:D5:36:E7:02:AE:48:BE:69:C4:37:96:1C:37

a=sendrecv

a=rtcp-mux

a=rtpmap:0 PCMU/8000

a=rtpmap:126 telephone-event/8000

a=maxptime:60

m=video 54038 RTP/SAVPF 100 116 117

c=IN IP4 XXX.XX.XXX.XX

a=rtcp:54038

a=candidate:1 1 UDP 2013266431 XXX.XX.XXX.XX 54038 typ host

a=candidate:1 2 UDP 2013266431 XXX.XX.XXX.XX 54038 typ host

a=candidate:2 1 UDP 2013266431 XXX.XX.XXX.XX 46884 typ host

a=candidate:2 2 UDP 2013266431 XXX.XX.XXX.XX 46884 typ host

a=ice-ufrag:M0X/

a=ice-pwd:PBi1Kno2s6QOhuavpz/4em

a=extmap:2 urn:ietf:params:rtp-hdrext:toffset

a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time

a=fingerprint:sha-256
E4:60:2C:4F:70:F3:5D:3C:46:BB:0F:5A:33:5B:5A:E9:02:D4:15:D5:36:E7:02:AE:48:BE:69:C4:37:96:1C:37

a=sendrecv

a=rtcp-mux

a=rtpmap:100 VP8/90000

a=rtcp-fb:100 ccm fir

a=rtcp-fb:100 nack

a=rtcp-fb:100

a=rtpmap:116 red/90000

a=rtpmap:117 ulpfec/90000

¿Someone else have this problem? I already try the Daniel Krax solution:
https://groups.google.com/forum/#!topic/lynckia/3v5oKjHCThY/discussion