So just to paraphrase, if I had the source of this codec, I would have to build it, and then trick GMP into thinking that it is an NAL. Do you know in the WebRTC trunk which files I would have to modify for packetization besides "media/webrtc/signaling/src/media" or does that depend on the codec?
Sorry for all the clarification questions-- I am very new to this. On Monday, July 21, 2014 8:59:34 AM UTC-7, Randell Jesup wrote: > On 7/21/2014 11:04 AM, Eric Rescorla wrote: > > > On Sun, Jul 20, 2014 at 5:06 PM, <[email protected]> wrote: > > > > > >> Hi everyone, > > >> > > >> I was interested in modifying the Firefox implementation of WebRTC (for my > > >> own purposes), specifically, adding the MPEG-4 FBA codec to the > > >> implementation. I noticed that in the /media directory or Firefox source, > > >> there is the WebRTC installation as well as several codec libraries. > > >> > > >> I was wondering, how would I be able to add and use additional codec > > >> libraries to the Firefox implementation of WebRTC? > > > > > > You can use the Gecko Media Plugin facility recently landed in Firefox 33. > > > > Note that to experiment with a different codec you could masquerade as > > an H.264 GMP plugin (with your data hidden in what look like H.264 > > NALs). We use mode 1, which effectively lets you produce large binary > > blobs of data that get fragmented by the RTP layer and reassembled for > > you. Note that the code will make assumptions that the KeyFrame/etc > > flags are set correctly. > > > > To implement a full new codec requires a GMP plugin, and mods to the > > media/webrtc/trunk/webrtc code (webrtc.org code in our tree) to > > implement packetization/depacketization specific to that codec, and > > smaller mods to media/webrtc/signaling/src/media to handle SDP > > negotiation. Perhaps a few to signaling/src/media-conduit to handle > > config parameters from SDP. > > > > -- > > Randell Jesup, Mozilla _______________________________________________ dev-media mailing list [email protected] https://lists.mozilla.org/listinfo/dev-media
