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Supports: VOB
VOB (Video Object) is the MPEG-2 container that holds the actual video, audio, subtitles, menus, and navigation tracks inside the VIDEO_TS folder on every DVD-Video disc, a format launched in Japan on October 19, 1996 and in the U.S. on March 24, 1997. DVDs cap video at 9.8 Mbit/s and resolution at 720×480 (NTSC) or 720×576 (PAL), so VOB content is fundamentally standard-definition by today's standards. WebP, released by Google in 2010, is a modern image format that handles both lossy and lossless compression — Google measures WebP lossy images as 25-34% smaller than equivalent JPEGs and WebP lossless as 26% smaller than PNGs. Converting from VOB to WebP almost always means extracting one or more frames as compact still images, and the use cases are specific:
| Property | VOB | WebP |
|---|---|---|
| Type | Video container (DVD-Video) | Still image (also animated) |
| Standard | DVD-Video Book (1996), based on MPEG-2 system stream (ISO 13818-1) | Google WebP, public spec released 2010 |
| Video / image codec | H.262 / MPEG-2 Part 2 | VP8-derived (lossy) or VP8L (lossless) |
| Typical use | Video, audio, subtitles, menus on a DVD | Single still or animated image on the web |
| Resolution | 720×480 (NTSC) / 720×576 (PAL), 4:3 or 16:9 | Up to 16383×16383 (max per spec) |
| Compression | Lossy MPEG-2, max 9.8 Mbit/s on DVD | Lossy (25-34% smaller than JPEG) or lossless (26% smaller than PNG) |
| Browser playback | Not native — needs a video player (VLC, MPC) | Native in Chrome, Firefox, Edge, Safari 14+, ~97% global support |
| File size on disk | 1 GiB max per VOB chunk (split across VTS_xx_y.vob) | Hard cap 16383×16383 dimensions; no fixed byte cap |
| Best for | Playing or archiving a DVD-Video title set | Compact still images on web pages and apps |
| Setting | What it does | Pick when |
|---|---|---|
| Quality Preset (Very High default) | Highest → Lowest preset; "Very High" is visually lossless WebP | You want a sensible default with no tweaking |
| Specific file size | Auto-tunes WebP quality to hit an exact KB / MB target | Building sprite sheets or matching a CMS upload cap |
| Lossless "Yes" | Pure VP8L lossless encode (26% smaller than PNG) | Archival stills, text-heavy frames, screenshots of menus |
| Lossless "No (Recommended)" | VP8 lossy encode, 25-34% smaller than JPEG | Photographs of scenes, faces, motion frames |
| Specific Frame + Time (seconds) | Grabs one still at the chosen timestamp | Single cover thumbnail, citation still, evidence frame |
| Multiple Screenshots | Extracts a sequence at fixed intervals | Sprite sheets, scrub thumbnails, scene-by-scene boards |
| Preset Resolution | Snaps to 240p / 360p / 480p / 576p / 720p / 1080p / 1440p / 2160p / 4320p | Standardizing thumbnails across many DVDs |
| Resolution Percentage | Scales to a % of the source frame | Quick downscale without typing pixels |
DVDs are natively 720×480 (NTSC) or 720×576 (PAL), so anything above 576p is upscaling and won't add real detail. If you actually need a video out instead of stills, look at VOB to MP4, or for an animated WebP-style result use VOB to GIF. Need a different still format? See VOB to JPG or VOB to PNG.
By default it extracts one frame at the timestamp you specify under Frame Selection → Specific Frame → Time (seconds). To pull many frames at once, switch to Multiple Screenshots and pick an interval — you'll get a numbered batch of WebP stills you can download as a ZIP. To turn the whole video into animation, use VOB to GIF instead, since WebP animation is supported but GIF is what most platforms (Reddit, Slack, Discord) embed natively.
DVDs are natively 720×480 (NTSC) or 720×576 (PAL) — that's standard definition, far below modern 1080p or 4K. Upscaling a VOB frame to 1080p does not add detail; it just stretches the same pixels. Pick the Preset Resolution at 480p / 576p (matching your source region) or leave it at "Keep original" for the sharpest result. The blur you may see is in the source disc itself, often compounded by MPEG-2's coarse quantization at lower DVD bitrates.
Those are pieces of the same title (movie or episode), split by the 1 GiB per-file size limit DVDs use for OS compatibility. They play back as a continuous stream. If you want a frame from chapter 5, convert just the VOB chunk that contains it (chapters are usually in the larger-numbered files). For a full scene-by-scene grid, drop all the VTS_01_*.vob files in at once and run Multiple Screenshots — each chunk is processed independently.
Default "No" (lossy VP8) is right for almost everything — photographs, motion frames, scenes with gradient and noise. Switch Lossless to "Yes" only when the frame is text-heavy (menu screens, subtitle stills, instructional diagrams) or when you want a pixel-perfect archival copy. Lossless WebP files are larger (typically 2-3x the lossy size) but still about 26% smaller than equivalent PNGs.
No — a still image format can't carry interactive menus, separate subtitle streams, or audio. The conversion captures the video plane as it would render at that timestamp, which means subtitle text burned into the frame at the moment of capture is included, but the underlying SUB/IDX subtitle stream is dropped. If you need to keep menus or subtitles, convert to a video format instead with VOB to MP4 or VOB to MKV.
Commercial DVDs use CSS (Content Scramble System) copy protection. The.vob files you see on the disc are encrypted and won't decode until ripped through DVD playback software (Handbrake, MakeMKV) or a hardware DVD drive that handles CSS. XConvert processes the.vob you upload as-is — if it's still CSS-encrypted, frames come out as noise. Rip the disc first with a tool that handles CSS, then upload the decrypted VOB.
Yes. Upload the entire VIDEO_TS folder's worth of.vob files — there's no quantity limit. Apply the same Frame Selection, Quality Preset, and Resolution settings to all of them, or set per-file options. Each file converts in parallel on our servers and downloads individually or as a single ZIP.
Almost. WebP is supported in Chrome 32+, Firefox 65+, Edge 18+, Safari 14+ (macOS Big Sur / iOS 14, September 2020), and Opera 19+ — roughly 97% of global browsers as of 2026. Internet Explorer 11 and Safari 13 or older on macOS Mojave do not support WebP and need a JPEG fallback. If your audience includes those edge cases, convert to JPEG instead with VOB to JPG.
There's no fixed cap. DVDs split each title into 1 GiB VOB chunks for filesystem compatibility, and XConvert handles those at full size. Conversion happens on our servers, so the practical limit is upload size and connection speed and patience for the upload. Multi-GB batches of every VOB from a disc work fine on a modern laptop.