no video show

[shoyu666]

hi @davidzhao
This is a very useful project ； hope to continue updating it

Thanks

env and step

os: macbook pro (m2)
go1.22.5 
livekit:version": "1.8.0
lk version 2.3.0


go install github.com/livekit/gstreamer-publisher@latest

run cmd:
gstreamer-publisher --token $LIVEKIT_PUBLISH_TOKEN \
    -- \
    videotestsrc is-live=true ! \
        video/x-raw,width=1280,height=720 ! \
        clockoverlay ! \
        videoconvert ! \
        x264enc tune=zerolatency key-int-max=60 bitrate=2000 \
    audiotestsrc is-live=true ! \
        audioresample ! \
        audioconvert ! \
        opusenc bitrate=64000

i can see participant join room,but no video show 

cmd output

2024-12-18T13:27:26.660+0800    INFO    gstreamer-publisher     gstreamer-publisher/publish.go:212      found source    {"mimeType": "audio/x-opus"}
2024-12-18T13:27:26.660+0800    INFO    gstreamer-publisher     gstreamer-publisher/publish.go:212      found source    {"mimeType": "video/x-h264"}
2024-12-18T13:27:27.881+0800    INFO    gstreamer-publisher     v2@v2.3.1/localparticipant.go:130       published track {"name": "", "source": "CAMERA", "trackID": "TR_VCjs5pL959PjSK"}
2024-12-18T13:27:27.886+0800    INFO    gstreamer-publisher     v2@v2.3.1/localparticipant.go:130       published track {"name": "", "source": "MICROPHONE", "trackID": "TR_AMLzJjyXi4ZkX7"}

participant info (from livekit service)

{
"sid_": "PA_5zZgZzsKx3TE",
"identity_": "test3",
"state_": 2,
"tracks_": [
{
"sid_": "TR_AMLzJjyXi4ZkX7",
"type_": 0,
"name_": "",
"muted_": false,
"width_": 0,
"height_": 0,
"simulcast_": false,
"disableDtx_": false,
"source_": 2,
"layers_": [],
"mimeType_": "audio/opus",
"mid_": "2",
"codecs_": [],
"stereo_": false,
"disableRed_": false,
"encryption_": 0,
"stream_": "camera",
"version_": {
"unixMicro_": 1734499648069006,
"ticks_": 0,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
},
"audioFeatures_": [],
"audioFeaturesMemoizedSerializedSize": 0,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
},
{
"sid_": "TR_VCjs5pL959PjSK",
"type_": 1,
"name_": "",
"muted_": false,
"width_": 1280,
"height_": 720,
"simulcast_": false,
"disableDtx_": false,
"source_": 1,
"layers_": [
{
"quality_": 2,
"width_": 1280,
"height_": 720,
"bitrate_": 0,
"ssrc_": 1961616403,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
}
],
"mimeType_": "video/H264",
"mid_": "1",
"codecs_": [
{
"mimeType_": "video/H264",
"mid_": "1",
"cid_": "TR_g8uQuyNXFD7C",
"layers_": [
{
"quality_": 2,
"width_": 1280,
"height_": 720,
"bitrate_": 0,
"ssrc_": 1961616403,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
}
],
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
}
],
"stereo_": false,
"disableRed_": false,
"encryption_": 0,
"stream_": "camera",
"version_": {
"unixMicro_": 1734499648078078,
"ticks_": 0,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
},
"audioFeatures_": [],
"audioFeaturesMemoizedSerializedSize": 0,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
}
],
"metadata_": "",
"joinedAt_": 1734499646,
"name_": "nicole_test3",
"version_": 5,
"permission_": {
"canSubscribe_": true,
"canPublish_": true,
"canPublishData_": true,
"canPublishSources_": [],
"canPublishSourcesMemoizedSerializedSize": 0,
"hidden_": false,
"recorder_": false,
"canUpdateMetadata_": false,
"agent_": false,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
},
"region_": "",
"isPublisher_": true,
"kind_": 0,
"attributes_": {
"isMutable": false,
"mode": "MAP",
"mapData": {},
"converter": {}
},
"disconnectReason_": 0,
"memoizedIsInitialized": -1,
"unknownFields": {
"fields": {}
},
"memoizedSize": -1,
"memoizedHashCode": 0
},

[shoyu666]

[shawnpatel]

I'm facing the same issue. Were you able to resolve?

[davidzhao]

What client are you using to validate the viewer? I'm unable to reproduce with meet.livekit.io

Which OS are you publishing from?

[shawnpatel]

Publishing from a Jetson Orin with GStreamer 1.20 and also tried to validate on meet.livekit.io.

Can you share the GStreamer version and libraries you had installed for this working version?

[shawnpatel]

I also tried this on MacOS 15.2 with GStreamer 1.24.9 and I'm getting the same issue.

[shawnpatel]

Update: The GStreamer pipeline is working correctly as I was able to intercept buffer.Bytes() in track.handleSample and decode it into the below image. It seems like the issue is somewhere in the LiveKit Go SDK in t.track.WriteSample.

[shawnpatel]

Update: I changed the encoder to vp8 and vp9 and it started to work. It doesn't work with h264 and av1. @davidzhao any idea why h264 doesn't work? I'm running this on a Jetson so I need the hardware encoding support!

[shawnpatel]

Got h264 to work with the following pipeline:

GST_DEBUG=3 gstreamer-publisher --token $LIVEKIT_PUBLISH_TOKEN \
    -- \
    videotestsrc is-live=true ! \
        videoconvert ! \
        video/x-raw,width=1280,height=720 ! \
        x264enc byte-stream=true tune=zerolatency speed-preset=ultrafast bitrate=2000 ! \
        video/x-h264,profile=baseline ! \
        h264parse

[shoyu666]

#41 (comment)

mac os sonoma ：14.5
Apple m2 pro

n@ndeMacBook-Pro ~ % gst-inspect-1.0 --version
gst-inspect-1.0 version 1.24.10
GStreamer 1.24.10
https://github.com/Homebrew/homebrew-core

i use ffplay view the video

Could you possibly list your environment so that I can copy my homework? @davidzhao