diff --git a/templates/index.html b/templates/index.html
index fed8165..720d6ca 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -131,12 +131,20 @@
 
         .video-preview video {
             max-width: 100%;
-            max-height: 400px;
+            max-height: 500px;
             border-radius: 8px;
             box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
             display: block;
         }
 
+        .video-controls {
+            margin: 15px 0;
+            padding: 15px;
+            background: white;
+            border-radius: 8px;
+            text-align: center;
+        }
+
         .crop-canvas {
             position: absolute;
             top: 0;
@@ -151,7 +159,6 @@
         }
 
         .crop-mode-btn {
-            margin: 10px 0;
             padding: 10px 20px;
             background: #28a745;
             color: white;
@@ -177,6 +184,112 @@
             font-weight: 600;
         }
 
+        .timeline-container {
+            margin: 15px 0;
+            padding: 20px;
+            background: white;
+            border-radius: 8px;
+        }
+
+        .timeline-label {
+            display: flex;
+            justify-content: space-between;
+            margin-bottom: 10px;
+            font-size: 0.9em;
+            color: #495057;
+        }
+
+        .timeline-wrapper {
+            position: relative;
+            height: 60px;
+            background: #f8f9fa;
+            border-radius: 8px;
+            margin: 10px 0;
+            cursor: pointer;
+            border: 2px solid #e9ecef;
+        }
+
+        .timeline-track {
+            position: absolute;
+            height: 100%;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            opacity: 0.3;
+            border-radius: 6px;
+        }
+
+        .timeline-handle {
+            position: absolute;
+            width: 4px;
+            height: 100%;
+            background: #667eea;
+            cursor: ew-resize;
+            z-index: 2;
+        }
+
+        .timeline-handle::after {
+            content: '';
+            position: absolute;
+            top: 50%;
+            left: 50%;
+            transform: translate(-50%, -50%);
+            width: 20px;
+            height: 30px;
+            background: #667eea;
+            border-radius: 4px;
+            border: 2px solid white;
+        }
+
+        .timeline-handle.start::after {
+            content: '⏴';
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            color: white;
+            font-size: 12px;
+        }
+
+        .timeline-handle.end::after {
+            content: '⏵';
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            color: white;
+            font-size: 12px;
+        }
+
+        .timeline-time {
+            position: absolute;
+            top: -25px;
+            background: #667eea;
+            color: white;
+            padding: 3px 8px;
+            border-radius: 4px;
+            font-size: 0.85em;
+            font-weight: 600;
+            white-space: nowrap;
+            transform: translateX(-50%);
+        }
+
+        .trim-mode-btn {
+            padding: 10px 20px;
+            background: #007bff;
+            color: white;
+            border: none;
+            border-radius: 6px;
+            cursor: pointer;
+            font-weight: 600;
+            transition: all 0.3s;
+            margin-right: 10px;
+        }
+
+        .trim-mode-btn:hover {
+            background: #0056b3;
+        }
+
+        .trim-mode-btn.active {
+            background: #dc3545;
+        }
+
         .video-info {
             background: white;
             padding: 15px;
@@ -357,14 +470,37 @@
                     <video id="video-preview" controls></video>
                     <canvas id="crop-canvas" class="crop-canvas"></canvas>
                 </div>
-                <button class="crop-mode-btn" id="crop-mode-btn">🎯 Click to Draw Crop Area</button>
-                <p class="crop-hint" id="crop-hint" style="display: none;">Click and drag on the video to select crop area</p>
+
+                <div class="video-controls">
+                    <button class="crop-mode-btn" id="crop-mode-btn">🎯 Click to Draw Crop Area</button>
+                    <p class="crop-hint" id="crop-hint" style="display: none;">Click and drag on the video to select crop area</p>
+                </div>
 
                 <div class="video-info" id="video-info"></div>
 
                 <!-- Trim Controls -->
                 <div class="form-group">
                     <label>⏱️ Trim Video</label>
+                    <div class="timeline-container">
+                        <button class="trim-mode-btn" id="trim-mode-btn">✂️ Use Timeline to Select Trim</button>
+                        <div id="timeline-scrubber" style="display: none;">
+                            <div class="timeline-label">
+                                <span>Start: <strong id="timeline-start-display">0.0s</strong></span>
+                                <span>Duration: <strong id="timeline-duration-display">0.0s</strong></span>
+                                <span>End: <strong id="timeline-end-display">0.0s</strong></span>
+                            </div>
+                            <div class="timeline-wrapper" id="timeline-wrapper">
+                                <div class="timeline-track" id="timeline-track"></div>
+                                <div class="timeline-handle start" id="timeline-start-handle">
+                                    <div class="timeline-time" id="start-time-label">0.0s</div>
+                                </div>
+                                <div class="timeline-handle end" id="timeline-end-handle">
+                                    <div class="timeline-time" id="end-time-label">0.0s</div>
+                                </div>
+                            </div>
+                            <p style="font-size: 0.9em; color: #6c757d; margin-top: 10px; text-align: center;">Drag the handles to set start and end times</p>
+                        </div>
+                    </div>
                     <div class="form-row">
                         <div>
                             <label style="font-weight: normal;">Start Time (seconds)</label>
@@ -454,6 +590,11 @@
         let cropStartX = 0;
         let cropStartY = 0;
         let cropRect = null;
+        let trimMode = false;
+        let isDraggingStart = false;
+        let isDraggingEnd = false;
+        let timelineStartPos = 0;
+        let timelineEndPos = 100;
 
         // Upload area handling
         const uploadArea = document.getElementById('upload-area');
@@ -464,6 +605,12 @@
         const cropCtx = cropCanvas.getContext('2d');
         const cropModeBtn = document.getElementById('crop-mode-btn');
         const cropHint = document.getElementById('crop-hint');
+        const trimModeBtn = document.getElementById('trim-mode-btn');
+        const timelineScrubber = document.getElementById('timeline-scrubber');
+        const timelineWrapper = document.getElementById('timeline-wrapper');
+        const timelineTrack = document.getElementById('timeline-track');
+        const startHandle = document.getElementById('timeline-start-handle');
+        const endHandle = document.getElementById('timeline-end-handle');
 
         uploadArea.addEventListener('click', () => videoInput.click());
 
@@ -667,6 +814,107 @@
             cropCtx.clearRect(0, 0, cropCanvas.width, cropCanvas.height);
         }
 
+        // Timeline trim mode
+        trimModeBtn.addEventListener('click', () => {
+            trimMode = !trimMode;
+            if (trimMode) {
+                timelineScrubber.style.display = 'block';
+                trimModeBtn.classList.add('active');
+                trimModeBtn.textContent = '❌ Cancel Timeline Selection';
+                initializeTimeline();
+            } else {
+                timelineScrubber.style.display = 'none';
+                trimModeBtn.classList.remove('active');
+                trimModeBtn.textContent = '✂️ Use Timeline to Select Trim';
+            }
+        });
+
+        function initializeTimeline() {
+            timelineStartPos = 0;
+            timelineEndPos = 100;
+            updateTimeline();
+        }
+
+        function updateTimeline() {
+            // Update track position and width
+            timelineTrack.style.left = timelineStartPos + '%';
+            timelineTrack.style.width = (timelineEndPos - timelineStartPos) + '%';
+            
+            // Update handle positions
+            startHandle.style.left = timelineStartPos + '%';
+            endHandle.style.left = timelineEndPos + '%';
+            
+            // Calculate actual times
+            const duration = videoInfo.duration;
+            const startTime = (timelineStartPos / 100) * duration;
+            const endTime = (timelineEndPos / 100) * duration;
+            const selectedDuration = endTime - startTime;
+            
+            // Update labels
+            document.getElementById('start-time-label').textContent = startTime.toFixed(1) + 's';
+            document.getElementById('end-time-label').textContent = endTime.toFixed(1) + 's';
+            document.getElementById('timeline-start-display').textContent = startTime.toFixed(1) + 's';
+            document.getElementById('timeline-end-display').textContent = endTime.toFixed(1) + 's';
+            document.getElementById('timeline-duration-display').textContent = selectedDuration.toFixed(1) + 's';
+            
+            // Update form inputs
+            document.getElementById('start-time').value = startTime.toFixed(1);
+            document.getElementById('end-time').value = endTime.toFixed(1);
+        }
+
+        // Timeline dragging
+        startHandle.addEventListener('mousedown', (e) => {
+            e.stopPropagation();
+            isDraggingStart = true;
+        });
+
+        endHandle.addEventListener('mousedown', (e) => {
+            e.stopPropagation();
+            isDraggingEnd = true;
+        });
+
+        document.addEventListener('mousemove', (e) => {
+            if (!isDraggingStart && !isDraggingEnd) return;
+            
+            const rect = timelineWrapper.getBoundingClientRect();
+            const x = e.clientX - rect.left;
+            const percentage = Math.max(0, Math.min(100, (x / rect.width) * 100));
+            
+            if (isDraggingStart) {
+                timelineStartPos = Math.min(percentage, timelineEndPos - 1);
+            } else if (isDraggingEnd) {
+                timelineEndPos = Math.max(percentage, timelineStartPos + 1);
+            }
+            
+            updateTimeline();
+        });
+
+        document.addEventListener('mouseup', () => {
+            isDraggingStart = false;
+            isDraggingEnd = false;
+        });
+
+        // Click on timeline to set range
+        timelineWrapper.addEventListener('click', (e) => {
+            if (e.target.classList.contains('timeline-handle')) return;
+            
+            const rect = timelineWrapper.getBoundingClientRect();
+            const x = e.clientX - rect.left;
+            const percentage = (x / rect.width) * 100;
+            
+            // Find closest handle and move it
+            const distToStart = Math.abs(percentage - timelineStartPos);
+            const distToEnd = Math.abs(percentage - timelineEndPos);
+            
+            if (distToStart < distToEnd) {
+                timelineStartPos = Math.min(percentage, timelineEndPos - 1);
+            } else {
+                timelineEndPos = Math.max(percentage, timelineStartPos + 1);
+            }
+            
+            updateTimeline();
+        });
+
         // Resolution presets
         document.querySelectorAll('.preset-btn').forEach(btn => {
             btn.addEventListener('click', () => {
@@ -760,6 +1008,7 @@
             videoInfo = null;
             cropMode = false;
             cropRect = null;
+            trimMode = false;
 
             document.getElementById('video-preview').src = '';
             videoInput.value = '';
@@ -768,6 +1017,9 @@
             cropModeBtn.classList.remove('active');
             cropModeBtn.textContent = '🎯 Click to Draw Crop Area';
             cropHint.style.display = 'none';
+            timelineScrubber.style.display = 'none';
+            trimModeBtn.classList.remove('active');
+            trimModeBtn.textContent = '✂️ Use Timeline to Select Trim';
 
             document.getElementById('upload-section').classList.remove('hidden');
             document.getElementById('edit-section').classList.add('hidden');