切换编码器为H264以后视频流失去响应

[Fridayssheep]

问题描述：如题，在将视频编码器从MJPEG切换为H264以后视频流卡死，且在一台arm机器（斐讯N1）上无法切换回MJPEG编码方式，整个前端卡死，无法修改视频流设置（修改设置点击保存日志仍是Video config unchanged, skipping reload）。在X86的一台机器上同样存在如此问题，但是可以将编码方式修改回MJPEG后继续使用。

以下是斐讯N1的docker logs：

openkvm    | 2026-02-24T14:29:00.842782Z  INFO one_kvm::video::device: Enumerating video devices...
openkvm    | 2026-02-24T14:29:00.996996Z  INFO one_kvm::video::device: Found capture device: UVC Camera (345f:2109): USB Vid (     uvcvideo) - 2 formats
openkvm    | 2026-02-24T14:29:00.998679Z  INFO one_kvm::video::device: Found 1 video capture devices
openkvm    | 2026-02-24T14:29:01.037733Z  INFO one_kvm::audio::device: Found 1 audio capture devices
openkvm    | 2026-02-24T14:29:01.047164Z  INFO one_kvm::video::encoder::registry: Detecting available video encoders at 1920x1     080
openkvm    | 2026-02-24T14:29:01.047245Z  INFO one_kvm::video::encoder::registry: Encoder detection timeout: 5000ms
openkvm    | 2026-02-24T14:29:06.047658Z  WARN one_kvm::video::encoder::registry: Encoder detection timed out after 5000ms, sk     ipping hardware detection
openkvm    | 2026-02-24T14:29:06.047770Z  INFO one_kvm::video::encoder::registry: Found 0 encoders from hwcodec
openkvm    | 2026-02-24T14:29:06.047805Z  INFO one_kvm::video::encoder::registry: Registering software encoders...
openkvm    | 2026-02-24T14:29:06.047857Z  INFO one_kvm::video::encoder::registry: H.264: 1 encoders (0 hardware, 1 software)
openkvm    | 2026-02-24T14:29:06.047888Z  INFO one_kvm::video::encoder::registry: H.265/HEVC: 1 encoders (0 hardware, 1 softwa     re)
openkvm    | 2026-02-24T14:29:06.047917Z  INFO one_kvm::video::encoder::registry: VP8: 1 encoders (0 hardware, 1 software)
openkvm    | 2026-02-24T14:29:06.047944Z  INFO one_kvm::video::encoder::registry: VP9: 1 encoders (0 hardware, 1 software)
openkvm    | 2026-02-24T14:29:40.062206Z  INFO one_kvm::web::handlers: Extension config after save: ttyd.enabled=false, rustde     sk.enabled=false
openkvm    | 2026-02-24T14:29:40.062316Z  INFO one_kvm::hid: Reloading HID backend: Otg
openkvm    | 2026-02-24T14:29:40.062341Z  INFO one_kvm::hid: Initializing OTG HID backend
openkvm    | 2026-02-24T14:29:40.062358Z  INFO one_kvm::otg::service: Enabling HID functions via OtgService
openkvm    | 2026-02-24T14:29:40.062378Z  INFO one_kvm::otg::service: Recreating gadget with: HID=true, MSD=true
openkvm    | 2026-02-24T14:29:40.062397Z  INFO one_kvm::otg::service: Cleaning up existing gadget before recreate
openkvm    | 2026-02-24T14:29:40.062461Z  INFO one_kvm::otg::manager: Cleaning up OTG USB Gadget: one-kvm
openkvm    | 2026-02-24T14:29:40.064859Z  INFO one_kvm::otg::manager: Unbound gadget from UDC
openkvm    | 2026-02-24T14:29:40.366039Z  INFO one_kvm::otg::msd: LUN 0 disconnected
openkvm    | 2026-02-24T14:29:40.367082Z  WARN one_kvm::otg::manager: Could not remove gadget directory: Internal error: Faile     d to remove directory /sys/kernel/config/usb_gadget/one-kvm: Directory not empty (os error 39)
openkvm    | 2026-02-24T14:29:40.367185Z  INFO one_kvm::otg::manager: OTG USB Gadget cleanup complete
openkvm    | 2026-02-24T14:29:40.367689Z  INFO one_kvm::otg::manager: Setting up OTG USB Gadget: one-kvm
openkvm    | 2026-02-24T14:29:40.368133Z  WARN one_kvm::otg::manager: Gadget exists but not bound, will reconfigure
openkvm    | 2026-02-24T14:29:40.368310Z  INFO one_kvm::otg::manager: Cleaning up OTG USB Gadget: one-kvm
openkvm    | 2026-02-24T14:29:40.372132Z  INFO one_kvm::otg::manager: OTG USB Gadget cleanup complete
openkvm    | 2026-02-24T14:29:40.383192Z  INFO one_kvm::otg::manager: OTG USB Gadget setup complete
openkvm    | 2026-02-24T14:29:40.385646Z  INFO one_kvm::otg::manager: Binding gadget to UDC: c9100000.usb
openkvm    | 2026-02-24T14:29:40.699111Z  INFO one_kvm::otg::service: Gadget created successfully
openkvm    | 2026-02-24T14:29:40.699233Z  INFO one_kvm::hid::otg: Initializing OTG HID backend
openkvm    | 2026-02-24T14:29:40.699452Z  INFO one_kvm::hid::otg: Auto-detected UDC: c9100000.usb
openkvm    | 2026-02-24T14:29:40.699697Z  INFO one_kvm::hid::otg: Keyboard device opened: /dev/hidg0
openkvm    | 2026-02-24T14:29:40.699828Z  INFO one_kvm::hid::otg: Relative mouse device opened: /dev/hidg1
openkvm    | 2026-02-24T14:29:40.699976Z  INFO one_kvm::hid::otg: Absolute mouse device opened: /dev/hidg2
openkvm    | 2026-02-24T14:29:40.700083Z  INFO one_kvm::hid::otg: Consumer control device opened: /dev/hidg3
openkvm    | 2026-02-24T14:29:40.700132Z  INFO one_kvm::hid: OTG backend initialized successfully
openkvm    | 2026-02-24T14:29:40.700172Z  INFO one_kvm::hid: HID backend reloaded successfully: Otg
openkvm    | 2026-02-24T14:29:40.700419Z  INFO one_kvm::web::handlers: HID backend initialized: Otg
openkvm    | 2026-02-24T14:29:40.700506Z  INFO one_kvm::web::handlers: Audio started during setup: device=hw:1,0
openkvm    | 2026-02-24T14:29:40.700554Z  INFO one_kvm::webrtc::webrtc_streamer: WebRTC audio enabled: true
openkvm    | 2026-02-24T14:29:40.700584Z  INFO one_kvm::web::handlers: System initialized successfully
openkvm    | 2026-02-24T14:29:41.008090Z  INFO one_kvm::video::streamer: Starting background tasks (stats, cleanup, monitor)
openkvm    | 2026-02-24T14:29:41.008275Z  INFO one_kvm::video::streamer: Streaming started
openkvm    | 2026-02-24T14:29:41.059354Z  INFO one_kvm::stream::mjpeg: Client 0083b1ec-97e3-4fe6-aa32-83dc23fa98f8 connected (     total: 1)
openkvm    | 2026-02-24T14:29:41.176947Z  INFO one_kvm::video::streamer: Capture format: 1920x1080 Mjpeg stride=0
openkvm    | 2026-02-24T14:29:41.356502Z  INFO one_kvm::web::ws: WebSocket client connected
openkvm    | 2026-02-24T14:29:41.357993Z  INFO one_kvm::web::ws: Client subscribed to topics: ["*"]
openkvm    | 2026-02-24T14:29:41.843006Z  INFO one_kvm::hid::websocket: WebSocket HID connection established (binary protocol)
openkvm    | 2026-02-24T14:29:45.555851Z  INFO one_kvm::video::device: Enumerating video devices...
openkvm    | 2026-02-24T14:29:45.563481Z  INFO one_kvm::video::device: Found capture device: UVC Camera (345f:2109): USB Vid (     uvcvideo) - 2 formats
openkvm    | 2026-02-24T14:29:45.564699Z  INFO one_kvm::video::device: Found 1 video capture devices
openkvm    | 2026-02-24T14:29:45.580695Z  INFO one_kvm::audio::device: Found 1 audio capture devices
openkvm    | 2026-02-24T14:29:49.283942Z  INFO one_kvm::stream::mjpeg: Client 0083b1ec-97e3-4fe6-aa32-83dc23fa98f8 disconnecte     d after 8.2s (224 frames, 27.3 avg FPS)
openkvm    | 2026-02-24T14:29:49.317228Z  INFO one_kvm::web::handlers: Setting WebRTC video codec to H264
openkvm    | 2026-02-24T14:29:49.321101Z  INFO one_kvm::video::stream_manager: Switching video mode: Mjpeg -> WebRTC
openkvm    | 2026-02-24T14:29:49.321264Z  INFO one_kvm::video::stream_manager: Stopping MJPEG streaming
openkvm    | 2026-02-24T14:29:49.355792Z  INFO one_kvm::video::streamer: Streaming stopped
openkvm    | 2026-02-24T14:29:49.355888Z  INFO one_kvm::video::stream_manager: Activating WebRTC mode
openkvm    | 2026-02-24T14:29:49.355926Z  INFO one_kvm::video::stream_manager: Configuring WebRTC capture pipeline: 1920x1080      Mjpeg @ 30fps
openkvm    | 2026-02-24T14:29:49.355965Z  INFO one_kvm::webrtc::webrtc_streamer: Setting direct capture device for WebRTC: "/d     ev/video1"
openkvm    | 2026-02-24T14:29:49.356021Z  INFO one_kvm::video::stream_manager: WebRTC mode activated (sessions created on-dema     nd)
openkvm    | 2026-02-24T14:29:49.379217Z  INFO one_kvm::video::stream_manager: Video mode switched to WebRTC
openkvm    | 2026-02-24T14:29:49.405597Z  INFO one_kvm::webrtc::webrtc_streamer: Creating shared video pipeline for H264
openkvm    | 2026-02-24T14:29:49.405711Z  INFO one_kvm::video::shared_video_pipeline: Creating shared video pipeline: H.264 19     20x1080 @ Balanced (4 Mbps) (input: MJPEG)
openkvm    | 2026-02-24T14:29:50.188427Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:10.719721Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:18.060326Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:18.252975Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:18.438960Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:18.607314Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload
openkvm    | 2026-02-24T14:30:18.775472Z  INFO one_kvm::web::handlers::config::apply: Video config unchanged, skipping reload

[mofeng-git]

如果没有硬件编码，mjpeg-->h264需要先软件解码在软件编码，可能造成系统高占用和高延迟。
请你使用webrtc模式时，试试使用采集卡 的 yuyv画面输入，看看这个情况有没有改善。如果仍然发生，请告诉我。

[mofeng-git]

当前已知的一个问题是，webrtc模式下切换输入参数可能卡在webrtc协商过程。临时解决办法是刷新网页。
但看你的描述不像是这种状况，暂时不知道原因。

玩客云测试截图：

[Fridayssheep]

似乎存在相同的问题，我尝试先修改为yuyv画面输入后正常，然后将编码方式修改为H264后视频流依旧失去了响应，我尝试回退到0.1.4版本后好像并不存在这个问题

v0.1.5

v0.1.4

[Fridayssheep]

一段时间后报错这个：
和您描述的卡在WebRTC协商过程似乎有点相似