Convert DVD Video Object (.vob) to MPEG-4 Audio (.m4a) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .vob file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
DVD VOBs carry high-quality audio tracks — AC3 (Dolby Digital), DTS, or LPCM — alongside MPEG-2 video. M4A is Apple's audio-only MPEG-4 container, the native format for iTunes, Apple Music, and all Apple audio devices. M4A supports both AAC (lossy) and ALAC (lossless), plus rich metadata including album art and chapter markers.
Extracting DVD audio to M4A produces files that integrate perfectly with the Apple ecosystem. M4A is the expected format for Apple Music libraries, iTunes imports, and iPhone/iPad/Mac audio playback. Unlike standalone AAC files, M4A provides proper seeking, duration reporting, and metadata support.
For DVD concert recordings and music content, M4A with ALAC provides lossless Apple-native audio. For spoken content, AAC in M4A is compact and universally playable.
FFmpeg reads the VOB program stream, selects the audio track, decodes AC3/DTS/LPCM, and encodes to AAC-LC or ALAC in the M4A container. Multi-channel content is downmixed to stereo by default. The M4A container supports MP4-based metadata (title, artist, album art, chapters). For lossless extraction, ALAC preserves every decoded sample.
AAC at 256 kbps in M4A provides near-transparent quality from DVD audio sources. ALAC preserves the decoded audio losslessly. Both options produce excellent results for the Apple ecosystem.
| Device | VOB | M4A |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
VOB to M4A provides the ideal extraction format for integrating DVD audio content into Apple's music and audio ecosystem.
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ความเป็นส่วนตัวมาก่อน
ไฟล์ถูกลบอัตโนมัติหลังการประมวลผล
ไม่ต้องลงทะเบียน
เริ่มแปลงได้ทันที
ใช้ได้ทุกที่
| No |
ทุกเบราว์เซอร์ ทุกอุปกรณ์
| ฟีเจอร์ | VOB | M4A |
|---|---|---|
| ชื่อเต็ม | DVD Video Object | MPEG-4 Audio |
| นามสกุล | .vob | .m4a |
| เหมาะที่สุดสำหรับ | DVD format | Better than MP3 |