New to Ant.. sure this is a simple question..but

[Ant Man]

Hi folks.  trying to get WebRTCAppEE index.html to provide a 720p encode vs 360p, plus also hard code 1500kbps vs 900kbps.  I can see in the webrtc-adaptor.js where the 900kpbs shows up, but how do i change the capture of the stream to be 720p by default and at 1.5Mbps?

for the playback of the stream, it is using play.html, so can i assume the play.html will decode the encode if the encode is 720p@ 1.5Mbps ?

Please assist when possible and thank you folks. 

AM

export class WebRTCAdaptor

{

constructor(initialValues){

this.peerconnection_config = null;

this.sdp_constraints = null;

this.remotePeerConnection = new Array();

this.remotePeerConnectionStats = new Array();

this.remoteDescriptionSet = new Array();

this.iceCandidateList = new Array();

this.roomName = null;

this.videoTrackSender = null;

this.audioTrackSender = null;

this.playStreamId = new Array();

this.currentVolume = null;

this.originalAudioTrackGainNode = null;

this.videoTrack = null;

this.audioTrack = null;

this.smallVideoTrack = null;

this.audioContext = null;

    this.soundOriginGainNode = null;

this.secondStreamGainNode = null;

this.localStream = null;

this.bandwidth = 900; //default bandwidth kbps

this.isMultiPeer = false; //used for multiple peer client

this.multiPeerStreamId = null;   //used for multiple peer client

this.webSocketAdaptor = null;

this.isPlayMode = false;

this.debug = false;

this.viewerInfo = "";

this.publishStreamId = null;

this.blackFrameTimer = null;

[Cem Kılıç]

Hello,

If the source of the stream is suitable, maybe you can try to add adaptive bitrate for your streams to lock one resolution and bandwidth.

https://github.com/ant-media/Ant-Media-Server/wiki/Adaptive-Bitrate-Streaming

Sorry, I might have missed a fundamental point in your question. 

Regards

[Ant Man]

Hi Cem .. thanks for the reply.  so, i'm specifically looking at the following path as an example: https://<nameofserver>/WebAppEE/index.html which brings up a page that you can "publish" a stream.  You can select any source, and in this case, i selected my new iMac HD camera that can support up to 1080p, but it only sees the publish at 640x360.  If I send an NDI source, I get 1280x720, even with the same bandwidth of 900kbps. So, how can I hard code a minimum of 1280x720 for every source input, or change it to 1080p ?  Hope this makes sense.  Thanks S

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[Selim Emre]

Hi,

Actually, it's related to your camera resolution capability. WebRTC choosing resolution automatically according to your camera. Btw, you can define some parameters for mediaConstraints.

var mediaConstraints = {

video: {

width: { min: 480, ideal: 1280, max: 1920 },

height: { min: 360, ideal: 720, max: 1080 }

},

audio: true

}

https://webrtc.github.io/samples/src/content/peerconnection/constraints/

https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia

https://developer.mozilla.org/en-US/docs/Web/API/Media_Streams_API/Constraints

I hope, I could help you.

Best Regards,

Selim

[Ant Man]

Hi Selim -- thanks so much for this.  Apologies for the delay in getting back to you.

Do you know if there is a way to capture webrtc audio as AAC ? 

Again, thank you!

[burak]

Hi Antman,

Actually AAC is not supported in WebRTC. In AMS only OPUS is supported in WebRTC.

If you need AAC you can consider using HLS if you don't need to capture audio in real-time because latency will be about 10 seconds. 

Alternative you can add an RTMP endpoint to your stream and capture AAc on the endpoint side with lower latency than HLS.

1 Eylül 2021 Çarşamba tarihinde saat 18:31:02 UTC+3 itibarıyla antman...@gmail.com şunları yazdı:

[Ant Man]

Thank you for your response

Will AMS support OPUS Red for WebRTC ?

Thanks again

To view this discussion on the web visit https://groups.google.com/d/msgid/ant-media-server/f46b670d-9140-47ce-af94-4cef09b324f3n%40googlegroups.com.

[burak]

AMS supports OPUS in band FEC.

6 Eylül 2021 Pazartesi tarihinde saat 14:22:27 UTC+3 itibarıyla antman...@gmail.com şunları yazdı:

[Ant Man]

Thanks for the answer. 

So - we have a requirement for high quality ( similar to AAC) via WebRTC - and not HLS- hence the comment about OPUS RED. 

Will AMS update their audio stack for high quality audio support?

Thanks

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[burak]

Hi,

We have an issue on github:

https://github.com/ant-media/Ant-Media-Server/issues/3076

In the content of this issue we will improve the audio quality. We can start working on it in 2 months.  You can follow it.

6 Eylül 2021 Pazartesi tarihinde saat 22:02:08 UTC+3 itibarıyla antman...@gmail.com şunları yazdı: