chore: lengthen humanised selfbot startup delays

Join/go-live still felt a touch fast. Widen the pauses: ~2.5-4.5s after
coming online before joining voice, ~6-10s after joining before Go Live.

.env.example

@@ -58,13 +58,18 @@ STREAM_BACKEND=selfbot
 # The VNC desktop runs on X display :1 (see docs/vnc-xfce-setup.md)
 VNC_DISPLAY=:1
 VNC_RESOLUTION=1920x1080
-VNC_FRAMERATE=30
-VNC_BITRATE_KBPS=4000
+# 1080p60 broadcast. 8 Mbps suits 60fps (YouTube-style 1080p60 sits ~8-12 Mbps);
+# drop to 30/4000 for a lighter stream. Max bitrate is 1.5x this value.
+VNC_FRAMERATE=60
+VNC_BITRATE_KBPS=8000
 
 # --- selfbot backend ---
 # A THROWAWAY/burner Discord user account token. NEVER your main account.
 # Using a selfbot violates Discord ToS and can get the account banned.
 DISCORD_SELFBOT_TOKEN=
+# Hardware (NVENC) encode for the stream. 1 = use the GPU (recommended for
+# 1080p60), 0 = software x264. Requires an NVIDIA GPU + ffmpeg built with nvenc.
+STREAM_HW=1
 
 # --- novnc backend ---
 # e.g. http://192.168.10.9:6080/vnc.html  (websockify --web=/usr/share/novnc 6080 localhost:5901)

bot/src/config.ts

@@ -35,8 +35,8 @@ export const config = {
   // x11grab source for the VNC display (TigerVNC runs the desktop on :1)
   vncDisplay: opt("VNC_DISPLAY", ":1"),
   vncResolution: opt("VNC_RESOLUTION", "1920x1080"),
-  vncFramerate: parseInt(opt("VNC_FRAMERATE", "30"), 10),
-  vncBitrateKbps: parseInt(opt("VNC_BITRATE_KBPS", "4000"), 10),
+  vncFramerate: parseInt(opt("VNC_FRAMERATE", "60"), 10),
+  vncBitrateKbps: parseInt(opt("VNC_BITRATE_KBPS", "8000"), 10),
 
   // selfbot backend (ToS-risk; use a throwaway account token, never your main)
   selfbotToken: opt("DISCORD_SELFBOT_TOKEN"),

bot/src/stream/selfbot.ts

@@ -33,6 +33,26 @@ export class SelfbotStreamer implements ScreenStreamer {
     return this.active;
   }
 
+  /**
+   * Wait a randomised, human-plausible amount of time. Resolves immediately if
+   * the stream is aborted (stop()) mid-wait, so teardown never hangs on a pause.
+   */
+  private humanPause(minMs: number, maxMs: number, signal?: AbortSignal): Promise<void> {
+    const ms = Math.floor(minMs + Math.random() * Math.max(0, maxMs - minMs));
+    return new Promise((resolve) => {
+      if (signal?.aborted) return resolve();
+      const onAbort = () => {
+        clearTimeout(timer);
+        resolve();
+      };
+      const timer = setTimeout(() => {
+        signal?.removeEventListener("abort", onAbort);
+        resolve();
+      }, ms);
+      signal?.addEventListener("abort", onAbort, { once: true });
+    });
+  }
+
   private async loadLib() {
     let selfbot: any, vs: any;
     try {
@@ -63,59 +83,127 @@ export class SelfbotStreamer implements ScreenStreamer {
     if (!ctx.voiceChannelId) {
       return "셀프봇 송출은 음성 채널 안에서 호출해야 합니다.";
     }
-    const { selfbot, vs } = await this.loadLib();
-    const { Streamer, prepareStream, playStream } = vs;
-
-    this.streamer = new Streamer(new selfbot.Client());
-    await this.streamer.client.login(this.config.selfbotToken);
-    await this.streamer.joinVoice(ctx.guildId, ctx.voiceChannelId);
-
-    const [w, h] = this.config.vncResolution.split("x").map((n) => parseInt(n, 10));
-    this.controller = new AbortController();
-
-    // Capture the VNC X display with the SYSTEM ffmpeg (which reliably has
-    // x11grab), then pipe that stream into the library. Relying on the lib's
-    // bundled libav for the x11grab input device is not portable; piping the
-    // system ffmpeg is. (Verified live against a real voice channel.)
-    const capture = spawn("ffmpeg", [
-      "-loglevel", "error",
-      "-f", "x11grab",
-      "-framerate", String(this.config.vncFramerate),
-      "-video_size", this.config.vncResolution,
-      "-i", this.config.vncDisplay,
-      "-c:v", "libx264", "-preset", "ultrafast", "-tune", "zerolatency",
-      "-pix_fmt", "yuv420p", "-g", String(this.config.vncFramerate),
-      "-f", "mpegts", "pipe:1",
-    ]);
-    this.capture = capture;
-    capture.stderr?.on("data", (d) => {
-      if (!this.controller?.signal.aborted) console.error("[selfbot x11grab]", d.toString().trim());
-    });
-
-    const { command, output } = prepareStream(
-      capture.stdout,
-      {
-        width: w || 1920,
-        height: h || 1080,
-        frameRate: this.config.vncFramerate,
-        videoCodec: "H264",
-        bitrateVideo: this.config.vncBitrateKbps,
-        bitrateVideoMax: Math.round(this.config.vncBitrateKbps * 1.5),
-      },
-      this.controller.signal,
-    );
-    command.on("error", (err: Error) => {
-      if (!this.controller?.signal.aborted) console.error("[selfbot] ffmpeg error:", err);
-    });
-
+    // Lock the starting state BEFORE any await: the human-pause delays below
+    // mean start() is in-flight for several seconds, so a second /stream call
+    // must be rejected by the `this.active` guard above, and the status must
+    // read "starting" rather than idle during the wait. Keep controller /
+    // streamer / capture as LOCAL refs so an interleaved stop() (which nulls the
+    // instance fields) can't turn our own continuation into a null dereference.
     this.active = true;
-    playStream(output, this.streamer, { type: "go-live" }, this.controller.signal)
-      .catch((err: Error) => console.error("[selfbot] playStream:", err))
-      .finally(() => {
-        this.active = false;
+    const controller = (this.controller = new AbortController());
+    const signal = controller.signal;
+    let streamer: any = null;
+    let capture: ChildProcess | null = null;
+
+    try {
+      const { selfbot, vs } = await this.loadLib();
+      const { Streamer, prepareStream, playStream } = vs;
+      signal.throwIfAborted();
+
+      streamer = this.streamer = new Streamer(new selfbot.Client());
+      await streamer.client.login(this.config.selfbotToken);
+      signal.throwIfAborted();
+
+      // Act like a person, not a bot: take a breath after coming online before
+      // navigating into the voice channel, then settle in for a few seconds
+      // before hitting "Go Live". Randomised so the cadence isn't
+      // fingerprintable. throwIfAborted() after each pause unwinds into the
+      // catch below if stop() lands mid-wait, so we never join/go-live on a
+      // torn-down streamer.
+      await this.humanPause(2500, 4500, signal);
+      signal.throwIfAborted();
+      await streamer.joinVoice(ctx.guildId, ctx.voiceChannelId);
+      await this.humanPause(6000, 10000, signal);
+      signal.throwIfAborted();
+
+      const [w, h] = this.config.vncResolution.split("x").map((n) => parseInt(n, 10));
+
+      // Capture the VNC X display with the SYSTEM ffmpeg (which reliably has
+      // x11grab), then pipe that stream into the library. Relying on the lib's
+      // bundled libav for the x11grab input device is not portable; piping the
+      // system ffmpeg is. (Verified live against a real voice channel.)
+      //
+      // The SYSTEM ffmpeg produces the final, Discord-ready H264 in one pass:
+      // target bitrate (-b:v/-maxrate), no B-frames (WebRTC requires this), a
+      // 1s keyframe interval, and yuv420p. The library then only REMUXES it
+      // (noTranscoding below) so there is no second decode/scale/encode. With
+      // streamHw on (default) this single encode runs on the GPU (h264_nvenc,
+      // RTX 5050); otherwise it falls back to software x264.
+      const hw = this.config.streamHw;
+      const kbps = this.config.vncBitrateKbps;
+      const maxKbps = Math.round(kbps * 1.5);
+      const captureCodecArgs = hw
+        ? ["-c:v", "h264_nvenc", "-preset", "p4", "-tune", "ll", "-forced-idr", "1"]
+        : ["-c:v", "libx264", "-preset", "ultrafast", "-tune", "zerolatency"];
+      capture = this.capture = spawn("ffmpeg", [
+        "-loglevel", "error",
+        "-f", "x11grab",
+        "-framerate", String(this.config.vncFramerate),
+        "-video_size", this.config.vncResolution,
+        "-i", this.config.vncDisplay,
+        ...captureCodecArgs,
+        "-b:v", `${kbps}k`, "-maxrate", `${maxKbps}k`, "-bufsize", `${kbps}k`,
+        "-bf", "0",
+        "-pix_fmt", "yuv420p",
+        "-g", String(this.config.vncFramerate),
+        "-f", "mpegts", "pipe:1",
+      ]);
+      capture.stderr?.on("data", (d) => {
+        if (!signal.aborted) console.error("[selfbot x11grab]", d.toString().trim());
       });
 
-    return "🔴 셀프봇으로 VNC 화면을 음성채널에 실시간 송출 중입니다 (Go Live).";
+      const { command, output } = prepareStream(
+        capture.stdout,
+        {
+          // The capture above is already a Discord-ready H264 elementary stream,
+          // so the library only remuxes it (no second encode). width/height/
+          // frameRate are passed for signalling; encoding options are ignored
+          // on the copy path.
+          width: w || 1920,
+          height: h || 1080,
+          frameRate: this.config.vncFramerate,
+          videoCodec: "H264",
+          noTranscoding: true,
+        },
+        signal,
+      );
+      command.on("error", (err: Error) => {
+        if (!signal.aborted) console.error("[selfbot] ffmpeg error:", err);
+      });
+      signal.throwIfAborted();
+
+      playStream(output, streamer, { type: "go-live" }, signal)
+        .catch((err: Error) => {
+          if (!signal.aborted) console.error("[selfbot] playStream:", err);
+        })
+        .finally(() => {
+          // The stream ended on its own (not via stop()); release the lock.
+          if (this.controller === controller) this.active = false;
+        });
+
+      return "🔴 셀프봇으로 VNC 화면을 음성채널에 실시간 송출 중입니다 (Go Live).";
+    } catch (e) {
+      // Startup was aborted (stop() during a pause) or failed. Tear down using
+      // our LOCAL refs, then clear instance state only if it still points at us
+      // (a concurrent stop()/start() may already have replaced it).
+      try {
+        capture?.kill("SIGKILL");
+      } catch {
+        /* ignore */
+      }
+      try {
+        streamer?.leaveVoice?.();
+        streamer?.client?.destroy?.();
+      } catch {
+        /* ignore */
+      }
+      if (this.capture === capture) this.capture = null;
+      if (this.streamer === streamer) this.streamer = null;
+      if (this.controller === controller) this.controller = null;
+      this.active = false;
+      if (signal.aborted) return "송출을 시작하는 중에 중지했습니다.";
+      throw e;
+    }
   }
 
   async stop(): Promise<void> {