DV to FLV Converter

DV to FLV Converter

A .dv file is a raw DV-DIF stream captured off a MiniDV, DVCAM, or Digital8 tape — an intraframe format from 1995 running at about 25 Mbit/s, which works out to roughly 11.9 GB per hour. FLV is Flash Video, the container Macromedia released in 2003 to deliver video through Flash Player. Flash Player itself is gone, but the container is not: RTMP streaming ingest, older learning-management systems, some legacy CMS uploaders, and a long tail of DVR and e-learning tooling still expect .flv. This page re-encodes DV footage into that container, and lets you choose whether the video inside it is the original Flash-era codec or something modern.

FLV Format at a Glance

What Goes Inside the FLV: Codec Choices on This Page

The extension tells you almost nothing about how the file will look — the codec choice does. This page exposes four video codecs and three audio codecs, and two of the video options are traps for camcorder footage.

On the audio side the choices are AAC (the default here), MP3, and ADPCM. AAC is the best of the three at any given bitrate; MP3 is the one the oldest Flash players are most certain to decode.

How to Convert DV to FLV

1. Upload Your DV File: Drag and drop the .dv or .dif capture, or click "+ Add Files" to browse. Batch upload works, and every capture in the queue takes the same settings.
2. Pick a Quality Preset: Under File Compression, the Quality Preset dropdown is pre-selected on "Very High (Recommended)". Specific file size, Constant Bitrate, Constant Quality, and Constraint Quality are the other modes on this page.
3. Optionally change Video Codec, Audio Codec, Video resolution, or Trim: Video Codec defaults to FLV and Audio Codec to AAC. Video resolution starts on "Keep original", holding the native 720×480 (NTSC) or 720×576 (PAL) frame, and Trim starts on "Unchanged".
4. Convert and Download: Click "Convert" and download the .flv file. Your upload travels over an encrypted connection, is processed on our servers, and is deleted automatically after a few hours. No sign-up, no watermark.

Why Convert to FLV at All Now?

Flash Player is dead, so nobody should be producing FLV for a web page any more. What keeps the format alive is plumbing. The RTMP protocol that most live-streaming ingest endpoints still speak carries its media in FLV framing, so encoders and recorders in that chain hand you .flv files and some of them will only take .flv back. Older learning-management systems, course-authoring packages, and content-management uploaders from the 2005-2012 era validate uploads by extension and reject anything that is not FLV. Some DVR and surveillance exporters do the same.

If none of that describes your situation, convert somewhere else. DV to MP4 produces a smaller file at better quality that plays in every browser, phone, and TV; DV to MOV is the better handoff into Final Cut or QuickTime-based workflows.

Frequently Asked Questions

Does an FLV file still play anywhere now that Flash Player is gone?

Yes, in software that decodes the file directly rather than through the browser plug-in. VLC, mpv, and MPC-HC open FLV files without any Flash component, and FFmpeg-based tools read and write the container routinely. What no longer works is the original delivery model — embedding an FLV in a web page for Flash Player to play. Adobe ended support on 31 December 2020 and started blocking Flash content on 12 January 2021, and every mainstream browser removed the plug-in.

Should I leave Video Codec on Sorenson Spark or switch to H.264?

Switch to H.264 unless you know the receiving system is old. Sorenson Spark is a proprietary variant of H.263, a codec designed for low-bitrate videoconferencing in the 1990s, and it will make DV footage look softer and blockier at any given file size. The FLV container formally supports H.264, so an H.264-in-FLV file is a legitimate FLV — it simply requires a decoder from the Flash Player 9 era or later, which every modern player has and some very old ingest software does not.

What are the "Flash Video" and "Flash Video (v2)" codec choices for?

Those are Flash Screen Video and Flash Screen Video 2, codecs Adobe designed for screencasts. They compress large areas of flat, unchanging colour extremely well and moving photographic images extremely badly. If you select one for a camcorder capture you will get an enormous file that still looks poor. They are in the list because the FLV container supports them, not because they suit tape footage.

Why does this page default to AAC audio rather than MP3?

Because AAC gives better sound at the same bitrate, and the FLV container has supported AAC and HE-AAC for most of its life. If you are feeding a very old Flash-era ingest system that predates that support, switch Audio Codec to MP3 — it is the choice the earliest Flash Players are most certain to handle. ADPCM is the third option, and it is only worth using if something specifically demands it.

What is the difference between FLV and F4V?

FLV is the original 2003 Flash Video container with its own bespoke structure. F4V is the replacement Adobe introduced with Flash Player 9 update 3, built on the ISO base media file format — the same foundation as MP4 — precisely because the older FLV structure struggled to carry H.264 and AAC cleanly. If your destination accepts either, F4V is the better-engineered container; if it names FLV specifically, stay here.

Will the FLV keep my tape's original frame size?

It keeps the stored frame — Video resolution starts on "Keep original", so a 720×480 NTSC or 720×576 PAL capture comes out at those dimensions. Be aware that DV uses non-square pixels: both of those frames are meant to display at 4:3, so a player treating the pixels as square shows the picture too wide. If it looks stretched, set Video resolution to Width x Height and enter 640×480 for NTSC material or 768×576 for PAL.

Will the footage still be interlaced after conversion?

Yes. Consumer DV and Digital8 record interlaced standard-definition fields, and this conversion carries the field pattern into the encoded frames rather than removing it — there is no deinterlace control on this page. On a progressive screen, fast motion may show combing. If you need a clean progressive result, deinterlace in an editor or a desktop encoder before or after this conversion.

What happens to my DV capture after the conversion?

The file is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public. The conversion is always a re-encode: the DV frames are decoded and compressed again with whichever codec you selected, so the FLV is one lossy generation from the tape rather than a repackaging of the original stream.