Current Issues & Status
1. Whisper Transcription (Real Mode)
✅ FIXED
2. FFmpeg Loading
⚠️ IMPROVED
3. Subtitle Rendering on Video
🔍 DEBUGGING
4. MP4 Export with Burned Subtitles
⏳ DEPENDS ON FFMPEG
🔧 Troubleshooting Steps
1. For Transcription Issues:
Open browser console and check for errors when clicking "Transcribe"
If transcription fails, it will fall back to demo subtitles instead of "example segments"
Make sure the Whisper model is downloaded (check Models panel)
2. For FFmpeg Loading:
Check browser console for: [VideoExporter] FFmpeg loaded successfully
If FFmpeg fails to load, check Network tab for 404 errors on ffmpeg files
Files should be served from: /ffmpeg/ffmpeg-core.js and /ffmpeg/ffmpeg-core.wasm
3. For Subtitle Display:
Check console for: [VideoPreview] Subtitle rendering check
Verify: segments > 0, videoDimensions.width > 0, showPositioner = false
Play the video to see if subtitles appear at the correct timestamps
4. Quick Test:
1. Load a video file
2. Click "Import Subtitles" and load an SRT file to bypass transcription
3. Check if imported subtitles display on the video
4. If they show, the rendering is working and the issue is with transcription
📋 Expected Behavior
Transcription: Should show actual words from the video, not "example segments"
Subtitle Display: Should appear over the video at the correct timestamps
Positioning: Should stay within video bounds (not in black bars)
Export: Should produce a single MP4 file with burned subtitles
✅ What's Working
Smart rendering logic for subtitle positioning
Video bounds detection and constraint system
Subtitle segment editor integration
Import/Export functionality for SRT/VTT files