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Bug 711497 - rtpvp8pay: Compatibility issue with linphone due to always sending a picture id
rtpvp8pay: Compatibility issue with linphone due to always sending a picture id
Product: GStreamer
Classification: Platform
Component: gst-plugins-good
git master
Other All
: Normal normal
: 1.2.1
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Reported: 2013-11-05 16:03 UTC by Elio Francesconi
Modified: 2013-11-05 16:29 UTC
See Also:
GNOME target: ---
GNOME version: ---

Description Elio Francesconi 2013-11-05 16:03:12 UTC
The RTP stream generated by GStreamer is not compatible with old decoder implementation. 
I noiticedthis issue with the soft phone I’m using(Linphphone), it seems its vp8 decoder with name "WebM Project VP8 Decoder v0.9.7-pl” is not compatible with your encoder (I got gstreamer-1.2.pkg, you provide us)

And the only information I got was:
vpx_codec_decode failed : 5 Bitstream not supported by this decoder ((null))

People develop webrtc2sip server were having the same issue, I’ve found some threads about this issue!msg/discuss-webrtc/xCxqzxopsDM/jIKtkA_StOgJ!topic/doubango/OH-nOn5w-ng
They solved disabling extension in vp8 encoding #define TDAV_VP8_DISABLE_EXTENSION in 

This is the header of the first packet I sent to the softphone

This issue is in rtpvp8pay due to the default PICTURE MODE used, it is not supported in the early version of vp8.

I solved the issue recompiling with this default value,

My suggestion is to change the default one value with VP8_PAY_NO_PICTURE_ID more conservative configuration, then let change the value programmatically.
Comment 1 Sebastian Dröge (slomo) 2013-11-05 16:29:13 UTC
commit 111982de2811c2c5bfb15d2d89322d9597e822c1
Author: Sebastian Dröge <>
Date:   Tue Nov 5 17:26:49 2013 +0100

    rtpvp8pay: Make Picture ID mode configurable and default to no picture ID
    Some implementations (linphone) only support no picture at all in the
    stream and will fail if one is provided.