The customized HEVC track failed

[shiqifeng2000]

hi

After RTP h265 codec is added, I try to add hevc track to this repo, but not successful, this is how I did.

claim a mime type
pub const MIME_TYPE_HEVC: &str = "video/hevc";

register codec to MediaEngine
m.register_codec(
RTCRtpCodecParameters {
capability: RTCRtpCodecCapability {
mime_type: MIME_TYPE_HEVC.to_owned(),
clock_rate: 90000,
channels: 0,
sdp_fmtp_line: "".to_owned(),
rtcp_feedback: vec![],
},
payload_type: 167,
..Default::default()
},
RTPCodecType::Video,
)?;

add a hevc payloader to RTP submodule
-->webrtc-0.9/rtp/src/codecs/h265/mod.rs
#[derive(Default, Debug, Clone)]
pub struct HevcPayloader {
vps_nalu: Option,
sps_nalu: Option,
pps_nalu: Option,
}
and of course, with impl Payloader for HevcPayloader, it's a lot of code

add some code to get pass the constrain in the function <payloader_for_codec>
-->webrtc-0.9/webrtc/src/rtp_transceiver/rtp_codec.rs

then I open a bi-direction program, exchanging sdp, and send rtp, got connected, seems working, but failed to have the receiver working

I saw the callback
peer_connection.on_track wont work anyway

then I check the code in
-->webrtc-0.9/webrtc/src/peer_connection/peer_connection_internal.rs
it seems there's not any rtp received, so i guess either it's sender failed or receiver failed, maybe more work need to be done

could you check the work above and show me any inspiration? thank you

[shiqifeng2000]

Update:

After installing wireshark, I found all the RTP pkt sent got the payload type as 38, but I actually set that to 167, it seems after I invoke the fn write_rtp from a TrackLocalWriter , it actually change my payload type into 38, thats pretty weird.

Then I try change my payload type to 38, it finally works, maybe it's a fallback reservation, I dont know. Please take a look to see if its a bug.

[shiqifeng2000]

Update:

I have figured it out that the max rtp payload is 127, sorry for this miss, I am closing the issue