VOB to FLV Converter

How to Convert VOB to FLV Online

1. Upload Your VOB File: Drag and drop or click "Add Files" to select a.VOB file from a DVD rip or your VIDEO_TS folder. Batch conversion is supported — drop in all the VTS_01_1.VOB / VTS_01_2.VOB segments at once. Files must be unencrypted (CSS-protected retail DVDs need to be decrypted before upload).
2. Pick a Video Codec and Quality Preset: Default is FLV1 (Sorenson Spark) for maximum legacy compatibility. Switch the video codec to H.264 for newer FLV decoders, or VP6 for mid-era Flash. Pick a Quality Preset (Lowest / Low / Medium / High / Very High / Highest), set Constant Bitrate, Constraint Quality, or target a Specific File Size (KB / MB / GB).
3. Resize, Trim, and Pick an Audio Codec (Optional): Choose a Resolution Preset (240p / 360p / 480p / 720p / 1080p), scale by percentage, or set custom width × height. Trim by time range or convert the full clip. Audio codec defaults to MP3 — switch to AAC for smaller files or ADPCM SWF for the oldest Flash players.
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared. The output is a single.flv container you can host, stream, or import into legacy authoring tools.

Why Convert VOB to FLV?

VOB is the DVD-Video container format — MPEG-2 video with AC-3 or MP2 audio, plus subtitle and menu streams, all multiplexed together and capped at 1 GiB per file (VOB on Wikipedia). FLV (Flash Video) was launched by Macromedia on 10 September 2003 and refined by Adobe through 2020, with Sorenson Spark, VP6, and later H.264 as its video codecs (Flash Video on Wikipedia). Adobe officially ended Flash Player on 31 December 2020 and major browsers removed it by 26 January 2021, so the modern reason to produce FLV is rarely the browser — it's the long tail of legacy systems that still ingest FLV:

• Importing DVD footage into legacy authoring tools — Adobe Animate, older Camtasia Studio, ScreenFlow 6, and many e-learning suites still accept.flv as a native import format where they choke on.vob.
• Feeding RTMP / Wowza / Red5 streaming servers — Wowza Streaming Engine and the open-source Red5 / Ant Media Server still ship FLV as a first-class container for archive playlists and on-demand origins.
• Restoring or archiving early-2000s web content — sites built between 2003-2014 (educational portals, Newgrounds-era animations, intranet training videos) shipped.flv. Re-deriving content from a DVD master back to FLV keeps the original media library format intact.
• Working with older CCTV / DVR exports — many surveillance NVRs from the late 2000s store evidence clips as FLV; converting DVD-Video evidence to FLV keeps the case archive in one consistent format.
• Smaller files than the source VOB — MPEG-2 in VOB is bitrate-heavy (often 6-9 Mbps for 480p / 576p DVD content). Re-encoding to H.264 inside FLV at 1-2 Mbps drops file size 3-6× with similar perceived quality at SD resolution.

VOB vs FLV — Format Comparison

Codec and Quality Quick Guide

Frequently Asked Questions

Why is the FLV smaller than my original VOB, and is quality lost?

DVD-Video VOB uses MPEG-2 at 6-9 Mbps for 480p (NTSC) or 576p (PAL). FLV with H.264 at 1-2 Mbps gives you a 3-6× file-size reduction at SD resolution with minor perceptual loss. With Sorenson Spark (FLV1) or VP6 the quality gap is more visible — those codecs are older and less efficient than MPEG-2 at equal bitrate, so use Very High quality or H.264 if visual fidelity matters.

My DVD has VTS_01_1.VOB, VTS_01_2.VOB, VTS_01_3.VOB — do I need to merge them first?

You can upload them together — drop all VTS_01_*.VOB files at once and they'll convert in batch order, producing one FLV per input segment. DVD authoring splits a single title into 1 GiB chunks for filesystem compatibility, so the splits are arbitrary boundaries, not chapter marks. If you need a single continuous FLV instead of three separate files, convert to MKV first with VOB to MKV (which can chain segments cleanly), or trim and stitch with VOB cutter. If you only want one segment, upload that single.VOB.

Can XConvert decrypt CSS-protected retail DVDs?

No. XConvert converts unencrypted.VOB files only. Retail DVDs use the Content Scramble System (CSS); ripping them requires a tool like MakeMKV or HandBrake on the local machine, after which you upload the resulting unencrypted VOB or MKV. We're a format converter, not a DRM remover — this is both a legal and a technical boundary.

Will subtitles and DVD menus survive the conversion?

No. FLV has no native subtitle or menu support. The conversion keeps the primary video and audio streams and drops the navigation, subtitle, and angle tracks. If you need subtitles, burn them into the video before converting (hard-subs), or convert to a container that supports soft-subs like VOB to MKV or VOB to MP4 instead.

Why pick FLV in 2026 instead of MP4?

For new web video, MP4 (H.264) is the right answer — Flash Player was discontinued on 31 December 2020. Pick FLV only when a downstream system specifically requires it: legacy Wowza / Red5 / Ant Media Server playlists, older Adobe Animate / Camtasia imports, mid-2000s e-learning archives, or surveillance / DVR systems that still emit FLV. If your goal is general web playback or social sharing, use VOB to MP4 instead.

What audio codec should I choose for FLV?

MP3 is the safe default — every FLV decoder handles it. Pick AAC for smaller files at equal quality (FLV adopted AAC alongside the H.264 update). Choose ADPCM SWF only if you're targeting very old Flash 7 / 8 players. If your VOB has Dolby Digital (AC-3) 5.1, it will be downmixed to stereo because FLV doesn't carry AC-3 natively.

Can I convert just the audio track from a VOB to an MP3?

Yes — but use the dedicated path. See VOB to MP3 to extract the audio directly without wrapping it in an FLV container.

Does the converted FLV play in modern browsers?

Directly in a browser, no — Adobe Flash Player was permanently removed from Chrome, Firefox, Edge, and Safari by 26 January 2021. To play FLV today you need VLC, MPC-HC, FFmpeg-based players, or a streaming server (Wowza, Red5) that transmuxes FLV to HLS or DASH on the fly. If your goal is browser playback, convert VOB to MP4 instead.

Will the conversion work on a phone?

Yes. The XConvert UI runs in any modern browser — Chrome, Safari, Firefox, Edge — on iOS and Android. Heavy conversions (long DVD titles, 720p+ output) are faster on a desktop because they're CPU-bound on our our servers — no paid tier or per-file cap, but the upload / download flow works fine from mobile.