Feat/mkv video converters #8
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- Install @ffmpeg/ffmpeg and @ffmpeg/util dependencies - Create video.ts module for FFmpeg video/audio conversions - Update convert.worker.ts to handle video operations - Support MKV to MP4, WebM, AVI, MOV, GIF, MP3, WAV, OGG conversions
- MKV to MP4 converter - MKV to WebM converter - MKV to AVI converter - MKV to MOV converter - MKV to GIF converter - MKV to MP3 audio extractor - MKV to WAV audio extractor - MKV to OGG audio extractor All converters use FFmpeg.wasm for client-side processing
- Added 8 MKV converter tools to tools.json - Added Video and Music icons for MKV converters - Tools now appear as cards on homepage
- Use correct FFmpeg API for version 0.12 - Load from CDN with proper URLs - Fix data buffer return type - Add better error handling in worker
- Add VideoProgress component with real-time progress display - Show FFmpeg loading and conversion progress - Add file size warnings for large video files - Optimize for speed: use remuxing (copy codec) for MKV→MP4/MOV - Use faster encoding presets (ultrafast) when re-encoding needed - Add Alert component for user warnings - Explain remuxing vs converting to users Performance improvements: - MKV→MP4/MOV now uses -c copy (fast remux, no re-encoding) - Reduced resolution to 720p max for faster processing - Changed from VP9 to VP8 for WebM (faster) - Use ultrafast x264 preset instead of medium
- Remove ArrayBuffer transfer that was causing empty blobs - Add validation for blob data before saving - Add logging to debug file sizes - Ensure proper Uint8Array to ArrayBuffer conversion - Add error handling for empty outputs
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