diff --git a/douyin_youtube_ffplay.py b/douyin_youtube_ffplay.py
index 8bd15d4..2e43561 100644
--- a/douyin_youtube_ffplay.py
+++ b/douyin_youtube_ffplay.py
@@ -305,13 +305,14 @@ def start_douyin_youtube_ffplay(
     # ]
 
 
-# 1080p - 极致优化版本（Ubuntu Server 专用，高质量 + YouTube直播推荐友好 + 强防Content ID）
-# 针对Ubuntu server（通常CPU较强，无iOS硬件限制）：
-#   - preset 升级到 medium 或 slow（如果CPU能承受，质量显著提升）
-#   - 比特率保持8500k-10000k峰值，符合YouTube 1080p直播高质量推荐
-#   - 音频防Content ID：音高+5%、频率偏移、多段EQ衰减背景音乐、强压缩、相位扰动（使用aphaser正确参数）、轻噪门
-#   - 移除无效参数，修复之前aphaser错误（aphaser支持in_gain/out_gain/delay/decay/speed/type，不支持feedback）
-#   - Ubuntu下推荐使用最新FFmpeg（apt install ffmpeg 或从源码编译支持libx264）
+
+# 1080p - 防缓冲优先极致稳定版（针对 YouTube "not receiving enough video" 错误）
+# 关键变化：
+# - 强制关键帧每 2 秒（YouTube 强烈推荐，避免 GOP 过长）
+# - preset 降到 faster（降低 CPU 压力，确保实时输出）
+# - 比特率稍降到 7000k-9000k（更稳，YouTube 1080p 推荐 4500-9000k 范围）
+# - 增大 bufsize + 添加 rc-lookahead=10（帮助率控制更稳）
+# - 保持音频防Content ID，但简化链路防额外延迟
 
     ffmpeg_command = [
         "ffmpeg", "-y", "-loglevel", "info", "-nostdin", "-re",
@@ -322,52 +323,54 @@ def start_douyin_youtube_ffplay(
         "-fflags", "+genpts+discardcorrupt+nobuffer+flush_packets",
         "-flags", "low_delay",
         "-err_detect", "ignore_err",
-        "-max_delay", "50000",
-        "-thread_queue_size", "4096",
+        "-max_delay", "30000",                     # 进一步降低延迟
+        "-thread_queue_size", "8192",              # 更大输入队列，防输入抖动
 
         "-headers", douyin_headers,
         "-i", real_url,
 
-        # 视频处理：1080p 纵屏优化，黑边填充
+        # 视频处理：1080p 纵屏，黑边
         "-vf",
         "fps=25,scale=1080:1920:force_original_aspect_ratio=decrease:flags=bicubic,"
         "pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black",
 
         "-c:v", "libx264",
-        "-preset", "medium",               # Ubuntu server CPU通常能承受，质量比faster好很多；若掉帧可回退到faster或veryfast
+        "-preset", "faster",                       # 先用 faster 确保不掉帧；稳定后再试 medium
         "-tune", "zerolatency",
         "-profile:v", "high",
-        "-level", "4.2",                   # 支持1080p@25fps
-        "-b:v", "8500k", "-maxrate", "10000k", "-bufsize", "20000k",
+        "-level", "4.2",
+        "-b:v", "7000k", "-maxrate", "9000k", "-bufsize", "18000k",  # 更保守比特率 + 大缓冲
+        "-minrate", "5000k",                       # 添加 minrate 强制 CBR 更稳
         "-vsync", "cfr",
-        "-g", "50", "-keyint_min", "50",
         "-r", "25",
+        "-g", "50", "-keyint_min", "25",           # GOP=50 (2s)，min=25 防太频繁
         "-bf", "0",
         "-sc_threshold", "0",
-        "-x264-params", "force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0:rc-lookahead=0",
+        "-force_key_frames", "expr:gte(t,n_forced*2)",  # 强制每2秒关键帧（最重要修复！）
+        "-x264-params", "force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0:rc-lookahead=10:keyint=50:min-keyint=25",
         "-pix_fmt", "yuv420p",
 
-        # 音频处理 - 防Content ID 强化版（多维度修改音频指纹）
-        "-c:a", "aac", "-b:a", "192k", "-ar", "48000", "-ac", "2",
+        # 音频处理 - 保持防Content ID，但简化链路
+        "-c:a", "aac", "-b:a", "160k", "-ar", "48000", "-ac", "2",
         "-af",
-        "afftdn=nf=-24:tn=1,"                              # 中等降噪，保留人声清晰度
-        "highpass=f=100,lowpass=f=5200,"                   # 切除低频鼓/贝斯 & 高频镲/噪音，聚焦人声区
-        "equalizer=f=180:width_type=o:width=2.2:g=-12,"    # 强衰减低频（背景音乐基础层）
-        "equalizer=f=350:width_type=o:width=1.8:g=-9,"     # 衰减低中频（常见旋律区）
-        "equalizer=f=750:width_type=o:width=1.6:g=-7,"     # 中频衰减，破坏音乐结构
-        "equalizer=f=2800:width_type=o:width=1.2:g=-5,"    # 高中频轻衰减，保持人声自然
-        "acompressor=threshold=-26dB:ratio=5.5:attack=7:release=90:makeup=6,"  # 强压缩，改变动态指纹
-        "asetrate=48000*1.05,atempo=1.0,aresample=48000,"  # 音高抬升5%（不改速度），有效规避Content ID
-        "afreqshift=shift=22,"                             # 频率整体偏移，进一步破坏匹配
-        "aphaser=type=t:decay=0.35:delay=3.0:speed=0.5,"   # 正确参数：轻微相位扰动（triangular类型），防检测
-        # "anlmdn=s=0.00012:p=0.0008:r=0.002,"               # 轻量非线性噪门，清理残余背景音乐
-        "volume=1.08,"                                     # 补偿音量衰减
-        "aresample=async=1:first_pts=0:min_hard_comp=0.100000:first_pts=0",  # 强制音视频同步
+        "afftdn=nf=-24:tn=1,"
+        "highpass=f=100,lowpass=f=5200,"
+        "equalizer=f=180:width_type=o:width=2.2:g=-12,"
+        "equalizer=f=350:width_type=o:width=1.8:g=-9,"
+        "equalizer=f=750:width_type=o:width=1.6:g=-7,"
+        "acompressor=threshold=-26dB:ratio=5.5:attack=7:release=90:makeup=6,"
+        "asetrate=48000*1.05,atempo=1.0,aresample=48000,"
+        "afreqshift=shift=22,"
+        "aphaser=type=t:decay=0.35:delay=3.0:speed=0.5,"
+        "anlmdn=s=0.00012:p=0.0008:r=0.002,"
+        "volume=1.08,"
+        "aresample=async=1:first_pts=0:min_hard_comp=0.100000:first_pts=0",
 
-        # 推流优化（FLV适合YouTube RTMP/RTMPS）
+        # 推流
         "-flvflags", "no_duration_filesize",
         "-f", "flv", youtube_rtmp
     ]
+
     proc = None
     stderr_q = None
     reader_t = None