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Add support for H265 encoded streams (#648)

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* Add H265 support

Adds H265 as a selectable video codec with software (x265enc), VAAPI
(vah265enc), and NVENC (nvh265enc) pipeline paths in both the legacy
pipeline builder and the RTPCodec definition.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Replace legacy vaapih264enc with vah264enc

The gstreamer-vaapi plugin suite (vaapih264enc) is superseded by the va
plugin (vah264enc) in gst-plugins-bad. Switch to it and update the
parameters accordingly: CBR instead of VBR for lower-latency streaming,
key-int-max instead of keyframe-period, and target-usage instead of
quality-level.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Unify keyframe interval to 60 frames for NVENC H264/H265 encoder paths

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Budovi
2026-08-04 15:16:33 +02:00
committed by GitHub
parent 827944349b
commit dfc41f73d6
3 changed files with 59 additions and 6 deletions
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server/internal/config/capture_pipeline.go
+36 -3
View File
@@ -152,11 +152,11 @@ func NewVideoPipeline(rtpCodec codec.RTPCodec, display string, pipelineSrc strin
switch hwenc {
case HwEncVAAPI:
if err := gst.CheckPlugins([]string{"vaapi"}); err != nil {
if err := gst.CheckPlugins([]string{"va"}); err != nil {
return "", err
}
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vaapih264enc rate-control=vbr bitrate=%d keyframe-period=180 quality-level=7 ! video/x-h264,stream-format=byte-stream,profile=constrained-baseline"+pipelineStr, display, fps, bitrate)
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vah264enc rate-control=cbr bitrate=%d key-int-max=60 target-usage=7 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,profile=constrained-baseline"+pipelineStr, display, fps, bitrate)
case HwEncNVENC:
if err := gst.CheckPlugins([]string{"nvcodec"}); err != nil {
return "", err
@@ -168,7 +168,7 @@ func NewVideoPipeline(rtpCodec codec.RTPCodec, display string, pipelineSrc strin
nvencElem = "nvautogpuh264enc"
}
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! %s name=encoder preset=2 gop-size=25 spatial-aq=true temporal-aq=true bitrate=%d vbv-buffer-size=%d rc-mode=6 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,profile=constrained-baseline"+pipelineStr, display, fps, nvencElem, bitrate, vbvbuf)
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! %s name=encoder preset=2 gop-size=60 spatial-aq=true temporal-aq=true bitrate=%d vbv-buffer-size=%d rc-mode=6 ! h264parse config-interval=-1 ! video/x-h264,stream-format=byte-stream,profile=constrained-baseline"+pipelineStr, display, fps, nvencElem, bitrate, vbvbuf)
default:
// https://gstreamer.freedesktop.org/documentation/openh264/openh264enc.html?gi-language=c#openh264enc
// gstreamer1.0-plugins-bad
@@ -187,6 +187,39 @@ func NewVideoPipeline(rtpCodec codec.RTPCodec, display string, pipelineSrc strin
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! x264enc threads=4 bitrate=%d key-int-max=60 vbv-buf-capacity=%d byte-stream=true tune=zerolatency speed-preset=veryfast ! video/x-h264,stream-format=byte-stream,profile=constrained-baseline"+pipelineStr, display, fps, bitrate, vbvbuf)
}
case codec.H265().Name:
if err := gst.CheckPlugins([]string{"ximagesrc"}); err != nil {
return "", err
}
vbvbuf := uint(1000)
if bitrate > 1000 {
vbvbuf = bitrate
}
switch hwenc {
case HwEncVAAPI:
if err := gst.CheckPlugins([]string{"va"}); err != nil {
return "", err
}
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! vah265enc rate-control=cbr bitrate=%d key-int-max=60 target-usage=7 ! h265parse config-interval=-1 ! video/x-h265,stream-format=byte-stream,profile=main"+pipelineStr, display, fps, bitrate)
case HwEncNVENC:
if err := gst.CheckPlugins([]string{"nvcodec"}); err != nil {
return "", err
}
pipelineStr = fmt.Sprintf(videoSrc+"video/x-raw,format=NV12 ! nvh265enc name=encoder rc-mode=cbr preset=p2 tune=low-latency gop-size=60 bitrate=%d vbv-buffer-size=%d ! h265parse config-interval=-1 ! video/x-h265,stream-format=byte-stream,profile=main"+pipelineStr, display, fps, bitrate, vbvbuf)
default:
// https://gstreamer.freedesktop.org/documentation/x265/index.html?gi-language=c
// gstreamer1.0-plugins-bad
if err := gst.CheckPlugins([]string{"x265"}); err != nil {
return "", err
}
pipelineStr = fmt.Sprintf(videoSrc+"x265enc bitrate=%d key-int-max=60 tune=zerolatency speed-preset=veryfast option-string=\"vbv-maxrate=%d:vbv-bufsize=%d\" ! video/x-h265,stream-format=byte-stream,profile=main"+pipelineStr, display, fps, bitrate, bitrate, vbvbuf)
}
default:
return "", fmt.Errorf("unknown codec %s", rtpCodec.Name)
}