's'

config/youtube.ini

@@ -11,6 +11,7 @@ stats_interval_sec = 10
 
 # ===== 其次：音频版权处理 =====
 # 是否启用 Demucs 人声分离（防 YouTube Content ID 版权识别）
+# 若推流几十秒后断流(YouTube 显示 no data)，可设为 否 使用原始音频
 # 是 = 启用，只保留人声；否 = 使用原始音频
 enable_demucs = 是
 

demucs_pipeline.py

@@ -69,8 +69,8 @@ def _load_demucs_model(use_gpu: bool):
 # Demucs 模型采样率
 DEMUCS_SAMPLE_RATE = 44100
 DEMUCS_CHANNELS = 2
-# 每次处理的音频长度（秒），影响延迟与质量
+# 每次处理的音频长度（秒），1.0 更易实时，2.0 质量更好但 P40 可能跟不上
-DEMUCS_CHUNK_SEC = 2.0
+DEMUCS_CHUNK_SEC = 1.0
 # 字节 per sample (s16le: 2 bytes)
 BYTES_PER_SAMPLE = 2
 
@@ -92,7 +92,7 @@ def _demucs_separate_vocals(model, audio_chunk, device, vocal_mix_ratio=1.0, mix
     if wav.dim() == 2:
         wav = wav.unsqueeze(0)
     with torch.no_grad():
-        out = apply_model(model, wav, device=device, progress=False, overlap=0.25)
+        out = apply_model(model, wav, device=device, progress=False, overlap=0.1)
     # out: (batch, sources, channels, samples)
     # sources: [drums=0, bass=1, other=2, vocals=3]
     vocals = out[0, 3]
@@ -269,19 +269,27 @@ def run_demucs_pipeline(
         "-b:v", f"{nvenc_params.get('video_bitrate_k', 4500)}k",
         "-maxrate", f"{nvenc_params.get('video_bitrate_k', 4500)+500}k",
         "-bufsize", f"{nvenc_params.get('video_bitrate_k', 4500)*2}k",
-        "-vsync", "cfr", "-g", "60", "-keyint_min", "60", "-r", "30",
+        "-fps_mode", "cfr", "-g", "60", "-keyint_min", "60", "-r", "30",
-        "-bf", "0", "-sc_threshold", "0",
+        "-bf", "0",
-        "-x264-params", "force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0",
         "-pix_fmt", "yuv420p",
         "-c:a", "aac", "-b:a", "128k", "-ar", "48000", "-ac", "2",
         "-af", "lowpass=f=9000,aresample=async=1:first_pts=0",
         "-flags", "+global_header", "-flvflags", "no_duration_filesize",
         "-f", "flv", youtube_rtmp,
     ]
-    if nvenc_params.get("tune_param"):
+    # NVENC 用 tune_param；libx264 用 sc_threshold + x264-params
+    codec = nvenc_params.get("codec_v", "libx264")
+    if nvenc_params.get("tune_param") and codec == "h264_nvenc":
         idx = ffmpeg_out_cmd.index("-profile:v")
         for p in reversed(nvenc_params["tune_param"]):
             ffmpeg_out_cmd.insert(idx, p)
+    elif codec == "libx264":
+        idx = ffmpeg_out_cmd.index("-bf")
+        ffmpeg_out_cmd.insert(idx + 2, "-sc_threshold")
+        ffmpeg_out_cmd.insert(idx + 3, "0")
+        idx = ffmpeg_out_cmd.index("-pix_fmt")
+        ffmpeg_out_cmd.insert(idx, "-x264-params")
+        ffmpeg_out_cmd.insert(idx + 1, "force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0")
 
     proc_v = None
     proc_a = None
@@ -385,7 +393,8 @@ def run_demucs_pipeline(
             except queue.Empty:
                 # 若 proc_out（推流进程）已异常退出，立即报告
                 if proc_out.poll() is not None and proc_out.returncode != 0:
-                    print(f"[ERROR] YouTube 推流进程已退出，返回码: {proc_out.returncode}")
+                    print(f"[ERROR] YouTube 推流进程已退出，返回码: {proc_out.returncode}，可能是 Demucs 处理跟不上或网络问题")
+                    print(f"[TIP] 若频繁断流，可尝试 config/youtube.ini 中设置 enable_demucs = 否 使用原始音频")
                     break
                 if time.time() - getattr(proc_v, "last_out_ts", time.time()) > stale_output_seconds:
                     print("[WARN] 长时间无任何日志，强制重启进程")

douyin_youtube_ffplay.py

@@ -258,7 +258,7 @@ def start_douyin_youtube_ffplay(
         "-profile:v", "high",
         # 720p，画质优先，YouTube 推荐 3-8 Mbps
         "-b:v", f"{br_k}k", "-maxrate", f"{br_k+500}k", "-bufsize", f"{br_k*2}k",
-        "-vsync", "cfr",
+        "-fps_mode", "cfr",
         "-g", "60", "-keyint_min", "60",
         "-r", "30",
         "-bf", "0",