Step 1: Supply your VOB files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted MP4 files.
VOB to MP4 Conversion FAQ
What does the VOB to MP4 converter do?
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VOB is a legacy container, often poorly supported on modern devices. Converting to MP4 rewraps the video with a current codec (H.264 / H.265 / VP9) for broad browser, phone, and TV compatibility.
Will resolution and frame rate be preserved in the MP4?
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Yes. VOB → MP4 keeps resolution, frame rate, and aspect ratio unchanged by default. To change them, use the Resize or Speed tool on the result.
Will the VOB play smoothly on modern devices after converting to MP4?
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Yes. Legacy VOB files often fail to play in modern browsers and on iOS / Android. MP4 uses widely supported codecs that play natively on phones, tablets, smart TVs, and every modern browser.
Will the converted MP4 be a different size than the VOB?
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Modern codecs compress better, so MP4 from a legacy VOB is typically 30-60% smaller at equivalent quality. Conversions in the opposite direction can grow the file.
My VOB footage shows comb lines on movement — will that carry into the MP4?
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It will unless you deinterlace, and VOB content very often is interlaced because the format comes from the broadcast and DVD era. Interlaced frames store two half-height fields captured a fiftieth of a second apart; on a progressive-scan phone or monitor that reads as horizontal combing on anything that moves. Turn on the deinterlace option and the encoder weaves the fields into whole progressive frames before writing the MP4. VOB is the Video Object container found in the VIDEO_TS folder of every DVD — an MPEG-2 program stream with DVD-specific navigation data added.
My VOB recordings are split into numbered parts — does MP4 have the same limit?
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No, and that is one of the better reasons to move. The VOB container has a practical single-file ceiling that long or high-bitrate recordings run straight into, which is exactly why old captures arrive as part1, part2, part3. MP4 has no equivalent limit, so the pieces can be rejoined into one continuous file. VOB is split across files, may be CSS-encrypted, and carries navigation packets that confuse general-purpose players.
Will the MP4 play on a phone without anything installed?
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That is the whole argument for it. MP4 is what phones record to and what every phone, tablet, console, television and browser built in the last decade decodes in hardware, so a file in it opens on whatever the recipient happens to own. Hardware decoding is the part people underestimate: it is why an hour of video plays on a phone without draining the battery, and why nothing else is a safer choice when you do not know what the file will land on. MP4 is the safest possible delivery target — every phone, browser, console, editor and Smart TV built in the last decade plays it without extra software.
My VOB has several audio tracks — do they all survive into the MP4?
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Not dependably. VOB stores multiple audio streams as first-class tracks, but MP4 playback support past the first track is inconsistent, so most players will only ever expose one. Choose the track you actually want before converting; the others are better extracted to their own files than left in a container that hides them. VOB preserves the whole DVD payload — multiple angles, multiple audio languages and subtitle tracks all survive inside it. MP4 only supports one widely-honoured subtitle format (mov_text), and multi-track audio is unreliable outside desktop players.
What should I watch for converting a VOB from a disc or a broadcast recording?
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Interlacing and aspect ratio, in that order. Material made for television is interlaced almost without exception, so deinterlacing has to be on or every moving edge arrives combed; and a great deal of it is stored as non-square pixels with a flag saying how wide to display it, which a converter that ignores the flag turns into a stretched or squashed MP4. Check the first few seconds of the output before running a batch — both faults are obvious immediately and invisible in the settings.
Why does my VOB file fail to convert to MP4?
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Almost always DRM. Some VOB files are encrypted at the bitstream level by the store or software that issued them, and an encrypted stream cannot be decoded by us or by anything else without the licence key. Files you recorded, exported or downloaded unprotected convert normally; a licensed purchase will not, and no converter can honestly promise otherwise.
Is there a file-size limit when converting VOB to MP4?
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Anonymous uploads are capped at a generous default; signed-in free accounts get a higher cap, and Pro accounts have no per-file limit. Browser memory is usually the practical constraint long before our server-side limits kick in.
Can I batch-convert several VOB files to MP4 at once?
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Yes. Drop or pick multiple VOB files in one upload — the converter processes them in parallel and returns a ZIP of the MP4 results. There is no need to repeat the upload step per file.
