diff --git "a/\001ΐ\034@@Pφ" "b/\001ΐ\034@@Pφ"
new file mode 100644
index 0000000..e69de29
diff --git a/src/server/youtube.ts b/src/server/youtube.ts
index b7b49fa..8b64286 100644
--- a/src/server/youtube.ts
+++ b/src/server/youtube.ts
@@ -32,21 +32,35 @@ function getYtDlpAssetName(): string {
   return 'yt-dlp' // κ·Έ μ™Έ OS: 순수 파이썬 zipapp. python3 κ°€ PATH 에 μžˆμ–΄μ•Ό λ™μž‘
 }
 
-/** 둜컬 μ„€μΉ˜ 경둜: %appdata%/.mc_custom/<asset> */
+/**
+ * 둜컬 μ„€μΉ˜ 경둜: OS별 μ‚¬μš©μž 데이터 디렉터리 μ•ˆμ˜ .mc_custom/<asset>.
+ *   - Windows: %APPDATA%/.mc_custom/yt-dlp.exe
+ *   - macOS  : ~/Library/Application Support/.mc_custom/yt-dlp_macos
+ *   - Linux λ“±: $XDG_CONFIG_HOME λ˜λŠ” ~/.config/.mc_custom/yt-dlp_linux (arch 따라 닀름)
+ */
 export function getYtDlpInstallPath(): string {
   return path.join(getMcCustomDir(), getYtDlpAssetName())
 }
 
+/** 순수 파이썬 zipapp(`yt-dlp`) 의 둜컬 μ„€μΉ˜ 경둜. python3 κ°€ PATH 에 μžˆμ–΄μ•Ό λ™μž‘. */
+function getYtDlpZipappPath(): string {
+  return path.join(getMcCustomDir(), 'yt-dlp_zipapp')
+}
+
 /** ν•œ λ²ˆμ— ν•œ λ‹€μš΄λ‘œλ“œλ§Œ μ§„ν–‰ν•˜λ„λ‘ 락 (μ„œλ²„ λ™μ‹œ μš”μ²­ 보호). */
 let installPromise: Promise<string> | null = null
 
 type ProbeResult = { ok: true } | { ok: false; detail: string }
 
 /**
- * %appdata%/.mc_custom/ 에 yt-dlp κ°€ μ€€λΉ„λλŠ”μ§€ ν™•μΈν•˜κ³ , μ—†μœΌλ©΄ GitHub Releases μ—μ„œ
- * ν˜„μž¬ OS/μ•„ν‚€ν…μ²˜μš© λ°”μ΄λ„ˆλ¦¬λ₯Ό μžλ™μœΌλ‘œ λ°›μ•„ μ„€μΉ˜ν•œλ‹€. 성곡 μ‹œ μ‹€ν–‰ 경둜 λ°˜ν™˜.
- * λ‹€μš΄λ‘œλ“œλœ λ°”μ΄λ„ˆλ¦¬κ°€ μ‹€ν–‰λ˜μ§€ μ•ŠλŠ” ν™˜κ²½(antivirus, κΆŒν•œ 문제 λ“±)이라면
- * PATH 의 `yt-dlp(.exe)` 둜 ν΄λ°±ν•˜κ³ , 그것도 μ‹€νŒ¨ν•˜λ©΄ 진단정보가 ν¬ν•¨λœ μ—λŸ¬λ₯Ό λ˜μ§„λ‹€.
+ * .mc_custom/ 디렉터리에 yt-dlp κ°€ μ€€λΉ„λλŠ”μ§€ ν™•μΈν•˜κ³ , μ—†μœΌλ©΄ GitHub Releases μ—μ„œ
+ * ν˜„μž¬ OS/μ•„ν‚€ν…μ²˜μš© λ„€μ΄ν‹°λΈŒ λ°”μ΄λ„ˆλ¦¬λ₯Ό μžλ™μœΌλ‘œ λ°›μ•„ μ„€μΉ˜ν•œλ‹€. 성곡 μ‹œ μ‹€ν–‰ 경둜 λ°˜ν™˜.
+ *
+ * λ„€μ΄ν‹°λΈŒ λ°”μ΄λ„ˆλ¦¬κ°€ μ‹€ν–‰λ˜μ§€ μ•ŠλŠ” ν™˜κ²½(glibc 미슀맀치, musl libc, antivirus 차단 λ“±)
+ * 이면 λ‹€μŒ μˆœμ„œλ‘œ ν΄λ°±ν•œλ‹€:
+ *   1) PATH 의 `yt-dlp(.exe)` (μ‹œμŠ€ν…œμ— λ”°λ‘œ 깐 κ±°)
+ *   2) (POSIX ν•œμ •) λ²”μš© 파이썬 zipapp `yt-dlp` λ₯Ό λ‹€μš΄λ‘œλ“œ ν›„ shebang μ‹€ν–‰ β€” python3 ν•„μš”
+ * μ „λΆ€ μ‹€νŒ¨ν•˜λ©΄ 각 μ‹œλ„μ˜ 진단정보가 ν¬ν•¨λœ μ—λŸ¬λ₯Ό λ˜μ§„λ‹€.
  */
 export async function ensureYtDlp(): Promise<string> {
   const target = getYtDlpInstallPath()
@@ -105,6 +119,25 @@ async function prepareYtDlp(target: string): Promise<string> {
     try { await fs.unlink(target) } catch { /* noop */ }
   }
 
+  // 4. POSIX ν•œμ • μ΅œν›„ 폴백: λ²”μš© 파이썬 zipapp `yt-dlp` λ‹€μš΄λ‘œλ“œ ν›„ shebang μ‹€ν–‰.
+  //    λ„€μ΄ν‹°λΈŒ λ°”μ΄λ„ˆλ¦¬κ°€ glibc/musl/arch 문제둜 λͺ» λ„λŠ” λ¦¬λˆ…μŠ€ ν™˜κ²½μ΄λΌλ„
+  //    python3 κ°€ PATH 에 있으면 λ™μž‘ν•œλ‹€. ~ 3MB 짜리 슀크립트.
+  if (process.platform !== 'win32') {
+    const zipappPath = getYtDlpZipappPath()
+    try {
+      try { await fs.unlink(zipappPath) } catch { /* noop */ }
+      await downloadToFile('https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp', zipappPath)
+      await fs.chmod(zipappPath, 0o755)
+      const probe = await probeVersion(zipappPath)
+      if (probe.ok) return zipappPath
+      diagnostics.push(`zipapp yt-dlp 검증 μ‹€νŒ¨: ${probe.detail} (python3 λˆ„λ½μ΄κ±°λ‚˜ PATH 에 μ—†μŒ)`)
+      try { await fs.unlink(zipappPath) } catch { /* noop */ }
+    } catch (err) {
+      diagnostics.push(`zipapp λ‹€μš΄λ‘œλ“œ μ‹€νŒ¨: ${err instanceof Error ? err.message : String(err)}`)
+      try { await fs.unlink(zipappPath) } catch { /* noop */ }
+    }
+  }
+
   throw new YtDlpUnavailableError(
     t('youtube.ytdlpVerifyFailedDetail', { detail: diagnostics.join(' | ') })
   )