MKV vs VOB
A detailed comparison of Matroska Video and DVD Video Object — file size, quality, compatibility, and which format to choose for your workflow.
Matroska Video
Video FilesMKV is a flexible, open-standard container format that can hold unlimited video, audio, subtitle, and metadata tracks. It is popular for high-definition video and supports virtually any codec.
About MKV filesDVD Video Object
Video FilesVOB (Video Object) is the container format for DVD video content.
About VOB filesStrengths Comparison
MKV Strengths
- Carries virtually any codec — H.264, H.265, AV1, VP9, Opus, FLAC, AAC, you name it.
- Multiple audio and subtitle tracks, chapters, and menus in one file.
- Patent-free container — no licensing fees.
- Attached fonts and metadata ride along for self-contained playback.
- Streamable and seekable with built-in index/cue tables.
VOB Strengths
- Universal DVD support on every player ever made.
- Carries multiple audio tracks, subtitles, and menus in one container.
- Mature tooling ecosystem for extraction and editing.
Limitations
MKV Limitations
- Not natively supported in Apple's QuickTime or Safari without third-party tools.
- Windows needed codec packs (or "Films & TV" app updates) to play it out of the box.
- Hardware decoders on older TVs and streamers often reject MKV.
- Because it allows any codec, compatibility varies wildly by player.
VOB Limitations
- Hard 1 GB file-size cap forces multi-file splits.
- MPEG-2 compression is 2-3× larger than modern codecs.
- Tied to CSS copy protection — decryption was once illegal.
- Disc-era format; streaming replaced DVDs for most users.
Technical Specifications
| Specification | MKV | VOB |
|---|---|---|
| MIME type | video/x-matroska | video/dvd |
| Extensions | .mkv, .mka (audio), .mks (subtitles) | — |
| Container structure | EBML (Extensible Binary Meta Language) | — |
| Related | WebM (restricted MKV subset) | — |
| Max tracks | Practically unlimited | — |
| Extension | — | .vob |
| Container | — | MPEG-2 Program Stream with DVD extensions |
| Video codec | — | MPEG-2 |
| Audio codecs | — | AC-3, DTS, MPEG audio, LPCM |
Typical File Sizes
MKV
- 45-min episode (H.264 1080p) 800 MB - 1.6 GB
- 2-hour movie (H.265 1080p) 1.5-3 GB
- 2-hour movie (4K HDR H.265) 15-40 GB
- Anime episode with 8 subtitle tracks 300-800 MB
VOB
- Single VOB segment ~1 GB (capped)
- 2-hour DVD movie (full VIDEO_TS) 4-7 GB
Ready to convert?
Convert between MKV and VOB online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
MKV (Matroska Video) is an open-standard multimedia container that can hold unlimited video, audio, subtitle, and metadata tracks in a single file. It is the preferred format for high-quality movie files and anime with multiple audio tracks.
VOB (DVD Video Object) is a video container format that bundles one or more video streams, audio tracks, and optional subtitles into a single file. The container format determines how metadata is organised and which codecs can live inside; the visual quality itself depends on the codec (H.264, H.265, VP9, AV1) rather than the VOB wrapper. It is part of the video files family.
MKV files play best in VLC (free, cross-platform), MPC-HC, PotPlayer, and Kodi. Some smart TVs and streaming devices support MKV directly. Windows 10/11 can play MKV files with built-in codec support.
VLC, MPV and PotPlayer play nearly every VOB file on desktop. Browser support varies: modern Chromium, Firefox and Safari play common containers via the HTML5 <video> tag, but niche VOB variants may fail. If a device refuses your VOB, convert to MP4 with our VOB to MP4 converter for universal playback.
Use MKV for media libraries where you want multiple audio and subtitle tracks in one file. Use MP4 for sharing, streaming, and uploading to platforms since it has near-universal device support and smaller overhead.
Upload your VOB to KaijuConverter and pick MP4, MOV, MKV, WebM, or any other target. Our pipeline uses FFmpeg under the hood and stream-copies when codecs are compatible (no quality loss) or transcodes at high-quality defaults otherwise. Conversion runs server-side; both files delete within two hours.