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Supports: VOB
VOB (Video Object) is the container DVD-Video uses to store the actual title content inside the VIDEO_TS folder. It is a strict subset of the MPEG-2 program stream, carrying MPEG-2 video plus AC-3, DTS, MPEG-1 Audio Layer II, or LPCM audio in private streams — formats that most phones, browsers, and music apps will not play directly. DVD title sets are also split into 1 GiB VOB chunks (VTS_01_1.VOB, VTS_01_2.VOB, …) for FAT32 compatibility, so a single movie or concert is scattered across multiple files. Converting to MP3 produces one small, universal audio file per VOB. Common reasons:
| Property | VOB | MP3 |
|---|---|---|
| Type | Video container (DVD-Video) | Audio-only codec |
| Specification | Strict subset of MPEG-2 program stream | MPEG-1/2 Audio Layer III |
| Typical audio inside | AC-3, DTS, MPEG-1 Layer II, LPCM | n/a (it is the audio) |
| Sample rate (DVD) | 48 kHz | 8-48 kHz |
| File size | Up to 1 GiB per chunk; full disc 4-8 GB | ~1 MB per minute at 128 kbps |
| Universal playback | DVD players, VLC, MPC-HC | Effectively every device made since ~1999 |
| Streaming/sharing | Not practical | Universal |
| Best for | Authoring/playing physical DVDs | Distribution, mobile, archival audio |
| Bitrate | Size per minute | Use case | Audible vs source |
|---|---|---|---|
| 128 kbps CBR | ~0.94 MB | Speech, audiobooks, commentary tracks | Slight high-frequency loss |
| 192 kbps CBR | ~1.4 MB | Casual music, podcasts with music | Mostly transparent |
| 256 kbps CBR | ~1.9 MB | Music libraries, concert rips | Effectively transparent |
| 320 kbps CBR | ~2.4 MB | Best MP3 quality, master copy | Audibly identical for most listeners |
| V0 VBR (~245 kbps avg) | ~1.8 MB | Best quality-per-byte for music | Effectively transparent |
No. Commercial DVDs are typically protected with CSS (Content Scramble System) and the VOB files cannot be read directly until the disc is decrypted. XConvert works on unencrypted VOBs — files you authored yourself, home-movie discs, public-domain releases, or VOBs already decrypted to your drive by a separate DVD ripper. If a VOB upload fails, the source is most likely still encrypted.
DVD-Video splits each title set into ~1 GiB chunks (VTS_01_1.VOB, VTS_01_2.VOB, …) so the disc remains compatible with FAT-style filesystems that historically could not handle files larger than 1 GiB. The audio stream is continuous across the chunks. Upload them in order and convert as a batch — you'll get one MP3 per VOB, which you can then merge if you want a single track.
Yes. DVDs commonly carry AC-3 (Dolby Digital) audio with up to 5.1 channels. The converter decodes AC-3 and downmixes to stereo MP3 by default, applying the standard Lo/Ro (Left only / Right only) downmix so center-channel dialogue stays audible and surround effects fold into the front pair. Set Audio Channel to Mono if you only need speech.
For ripping a music concert DVD: 320 kbps CBR or V0 VBR — best MP3 quality, ~2.4 MB per minute. For general music libraries: 192-256 kbps for a smaller-but-still-excellent balance. For dialogue, narration, or commentary tracks: 128 kbps CBR is plenty and lets you fit hours into a single-digit MB file. DVD audio is 48 kHz at the source; matching that or downsampling to 44.1 kHz are both fine.
Yes. Use the Trim section: enter the start time and a duration in HH:MM:SS.sss format (for example start 00:14:30 and duration 00:03:45 for a 3-minute 45-second clip starting 14:30 into the VOB). Trim runs before encoding so you get exactly the section you want as the output MP3.
VOBs carry DVD chapter information and subpicture (subtitle) streams in private stream 1, but MP3 has no concept of chapters or subtitles — it's a pure audio format. The conversion keeps the audio stream and drops everything else. If you want chapter-based MP3 splitting, run the conversion once per chapter using the Trim controls, or convert the whole VOB and use a chapter-aware tagger afterward.
If you want a lossless copy, yes — use VOB to WAV for uncompressed PCM (no further quality loss after the AC-3 decode) or VOB to FLAC for lossless compression at roughly half the WAV size. MP3 is best for portable listening; WAV/FLAC are best for archiving and re-editing. Note that even WAV/FLAC cannot recover quality the original AC-3 encode already discarded.
If you want the video too, use VOB to MP4 to repackage into a modern container that streams, plays on phones, and uploads to YouTube. MP3 is for cases where you only need the audio — concerts, lectures, audiobooks, voiceovers — and want a fraction of the storage.