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VOB to MP4
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MP4, MOV, AVI, MKV, WebM, FLV, WMV, VOB
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Frequently Asked Questions
What is a VOB file?▼
VOB (Video Object) is the main video container format on DVD discs. DVD videos are stored as .VOB files in the VIDEO_TS folder. They contain MPEG-2 video, Dolby AC3 or DTS audio, and DVD menu data.
Can I convert encrypted DVD VOB files?▼
Only unencrypted VOB files are supported. Commercial DVDs use CSS (Content Scramble System) encryption — these VOB files must be decrypted first (using DVD decryption tools) before conversion.
Is video quality preserved converting VOB to MP4?▼
Yes. MPEG-2 video from VOB is re-encoded to H.264 for MP4. The output quality matches the source DVD quality. The MP4 file is typically 50–70% smaller than the original VOB.
Are all VOB audio tracks preserved?▼
The primary audio track (Dolby AC3) is converted to AAC in the MP4 output. Multiple audio tracks or subtitle streams may not transfer automatically.
Is the conversion done in the browser?▼
Yes. FFmpeg WebAssembly handles VOB to MP4 conversion locally. No file is uploaded.