diff --git a/public/editor.js b/public/editor.js
index 4913ac8..67bc18e 100644
--- a/public/editor.js
+++ b/public/editor.js
@@ -20,6 +20,103 @@
   var endSec = document.getElementById('endSec')
   var saveBtn = document.getElementById('saveBtn')
 
+  // ── 영상 ID 인라인 편집 (실시간 가용성 표시) ───────────────────────
+  var videoIdInput = document.getElementById('videoIdInput')
+  var idStatus = document.getElementById('idStatus')
+  var changeIdBtn = document.getElementById('changeIdBtn')
+  var copyShareBtn = document.getElementById('copyShareBtn')
+  var ID_RE = /^[a-zA-Z0-9_-]{1,64}$/
+  var idDebounce = null
+
+  function setIdStatus(text, cls) {
+    if (!idStatus) return
+    idStatus.textContent = text
+    idStatus.className = 'idStatus ' + (cls || 'muted')
+  }
+
+  function refreshIdStatus() {
+    if (!video || !videoIdInput) return
+    var v = (videoIdInput.value || '').trim()
+    if (!v) {
+      setIdStatus('비어 있음', 'idStatusBad')
+      changeIdBtn.disabled = true
+      return
+    }
+    if (v === video.id) {
+      setIdStatus('현재 ID', 'muted')
+      changeIdBtn.disabled = true
+      return
+    }
+    if (!ID_RE.test(v)) {
+      setIdStatus('형식: 영문/숫자/_/- (1~64자)', 'idStatusBad')
+      changeIdBtn.disabled = true
+      return
+    }
+    setIdStatus('확인 중…', 'muted')
+    changeIdBtn.disabled = true
+    clearTimeout(idDebounce)
+    idDebounce = setTimeout(function () {
+      fetch('/op/videos/idAvailable?id=' + encodeURIComponent(v), { cache: 'no-store' })
+        .then(function (r) { return r.json() })
+        .then(function (j) {
+          // stale 응답 (사용자가 그 사이에 입력을 더 바꾼 경우) 무시
+          if ((videoIdInput.value || '').trim() !== v) return
+          if (j && j.ok && j.available) {
+            setIdStatus('사용 가능', 'idStatusOk')
+            changeIdBtn.disabled = false
+          } else {
+            setIdStatus(j && j.reason ? j.reason : '이미 사용 중', 'idStatusBad')
+            changeIdBtn.disabled = true
+          }
+        })
+        .catch(function () {
+          if ((videoIdInput.value || '').trim() !== v) return
+          setIdStatus('확인 실패', 'idStatusBad')
+          changeIdBtn.disabled = true
+        })
+    }, 250)
+  }
+
+  if (videoIdInput && video) {
+    videoIdInput.addEventListener('input', refreshIdStatus)
+    changeIdBtn.addEventListener('click', function () {
+      var newId = (videoIdInput.value || '').trim()
+      if (!newId || newId === video.id) return
+      changeIdBtn.disabled = true
+      setIdStatus('변경 중…', 'muted')
+      fetch('/op/videos/' + encodeURIComponent(video.id) + '/changeId', {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify({ newId: newId })
+      }).then(function (r) { return r.json() }).then(function (j) {
+        if (!j.ok) {
+          setIdStatus(j.message || 'ID 변경 실패', 'idStatusBad')
+          changeIdBtn.disabled = false
+          return
+        }
+        // 같은 페이지를 새 ID 로 다시 진입 (URL ?id= 도 갱신).
+        location.replace(folderBaseUrl + '/video/editor?id=' + encodeURIComponent(j.video.id))
+      }).catch(function (e) {
+        setIdStatus('변경 실패: ' + e.message, 'idStatusBad')
+        changeIdBtn.disabled = false
+      })
+    })
+    if (copyShareBtn) {
+      copyShareBtn.addEventListener('click', function () {
+        // 입력란의 후보 ID 가 아니라 실제로 DB 에 저장된 video.id 로 URL 을 만든다.
+        // (변경 전에는 새 URL 이 아직 살아있지 않으므로.)
+        var shareUrl = location.origin + '/video/' + folderPathEnc + '/' + encodeURIComponent(video.id)
+        if (navigator.clipboard && navigator.clipboard.writeText) {
+          navigator.clipboard.writeText(shareUrl).then(function () {
+            setIdStatus('공유 주소 복사됨', 'idStatusOk')
+          }, function () { window.prompt('주소를 복사하세요:', shareUrl) })
+        } else {
+          window.prompt('주소를 복사하세요:', shareUrl)
+        }
+      })
+    }
+  }
+
   // 드래그&드롭
   ;['dragenter', 'dragover'].forEach(function (evt) {
     dropZone.addEventListener(evt, function (e) {
diff --git a/public/styles.css b/public/styles.css
index b3deb94..c92cea1 100644
--- a/public/styles.css
+++ b/public/styles.css
@@ -230,6 +230,20 @@ body.siteBody.centerLayout { display: flex; align-items: center; justify-content
 .videoPanel video {
   width: 100%; max-height: 60vh; background: #000; border-radius: 10px;
 }
+.videoIdRow {
+  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
+  background: var(--bg-card); border: 1px solid var(--border);
+  border-radius: 10px; padding: 10px 14px;
+}
+.videoIdRow label { color: var(--text-muted); font-size: 13px; }
+.videoIdRow input[type="text"] {
+  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
+  color: var(--text); padding: 6px 10px; font-family: ui-monospace, monospace;
+  font-size: 14px; min-width: 260px; flex: 1; max-width: 420px;
+}
+.idStatus { font-size: 13px; min-width: 90px; }
+.idStatusOk { color: #5dd28a; }
+.idStatusBad { color: #e57373; }
 .trimTimeline {
   background: var(--bg-card); border: 1px solid var(--border);
   border-radius: 10px; padding: 16px;
diff --git a/views/op/editor.ejs b/views/op/editor.ejs
index 73e9e06..b1eafe9 100644
--- a/views/op/editor.ejs
+++ b/views/op/editor.ejs
@@ -39,6 +39,15 @@
       </div>
 
       <div id="videoPanel" class="videoPanel" <% if (!video) { %>hidden<% } %>>
+        <div class="videoIdRow">
+          <label for="videoIdInput">영상 ID</label>
+          <input type="text" id="videoIdInput" autocomplete="off" spellcheck="false"
+            value="<%= video ? video.id : '' %>" />
+          <span id="idStatus" class="idStatus muted"></span>
+          <button type="button" class="secondaryButton" id="changeIdBtn" disabled>변경</button>
+          <button type="button" class="secondaryButton" id="copyShareBtn">공유 주소 복사</button>
+        </div>
+
         <video id="editVideo" controls preload="metadata"
           <% if (video) { %>src="/api/video/<%= encodeURIComponent(video.id) %>/file?edited=0"<% } %>></video>