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Adding VP8 codec support

master
WolverinDEV 2020-12-30 17:33:23 +01:00
parent a6afb98093
commit b162668090
1 changed files with 10 additions and 3 deletions
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13
shared/js/connection/rtc/SdpUtils.ts
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@ -14,6 +14,7 @@ interface SdpCodec {
const OPUS_VOICE_PAYLOAD_TYPE = 111;
const OPUS_MUSIC_PAYLOAD_TYPE = 112;
const H264_PAYLOAD_TYPE = 126;
const VP8_PAYLOAD_TYPE = 120; /* 120 is the default codec format for Firefox. Firefox has problems when changing the payload types */
export class SdpProcessor {
private static readonly kAudioCodecs: SdpCodec[] = [
@ -41,6 +42,12 @@ export class SdpProcessor {
];
private static readonly kVideoCodecs: SdpCodec[] = [
{
payload: VP8_PAYLOAD_TYPE,
codec: "VP8",
rate: 90000,
rtcpFb: [ "nack", "nack pli", "ccm fir", "transport-cc" ],
},
{
payload: H264_PAYLOAD_TYPE,
codec: "H264",
@ -50,10 +57,10 @@ export class SdpProcessor {
fmtp: {
"level-asymmetry-allowed": 1,
"packetization-mode": 1,
"profile-level-id": "42e01f",
"profile-level-id": "4d0028",
"max-fr": 30,
}
}
},
];
private rtpRemoteChannelMapping: {[key: string]: number};
@ -78,7 +85,7 @@ export class SdpProcessor {
processIncomingSdp(sdpString: string, _mode: "offer" | "answer") : string {
/* The server somehow does not encode the level id in hex */
sdpString = sdpString.replace(/profile-level-id=4325407/g, "profile-level-id=42e01f");
sdpString = sdpString.replace(/profile-level-id=4325407/g, "profile-level-id=4d0028");
const sdp = sdpTransform.parse(sdpString);
this.rtpRemoteChannelMapping = SdpProcessor.generateRtpSSrcMapping(sdp);