CRW to FLV Converter

CRW to FLV Converter

CRW is Canon's oldest RAW photo format — a single unprocessed still written by early-2000s Canon cameras — and FLV is Adobe's Flash Video container, a streaming format from the same era whose player reached end of life on December 31, 2020. This converter renders the CRW still and wraps it in an FLV as a short, silent clip that holds one frame on screen. It is a doubly vintage pairing, and for almost everyone the right destination is a normal photo (CRW to JPG) or, if a clip is genuinely needed, the universally compatible CRW to MP4 rather than a Flash container. Pick FLV only when a specific legacy Flash workflow still demands the .flv extension.

CRW Format at a Glance

FLV Format at a Glance

How to Convert CRW to FLV

1. Upload Your CRW File: Drag and drop your .crw onto the page or click "+ Add Files". RAW files are large, so the main wait is the upload, not the conversion; add several at once for a slideshow.
2. Set Merge strategy and Image Duration: Choose Merge images to combine every uploaded CRW into one FLV, or Video per image for a separate clip each. Set Image Duration (default 5 seconds per frame) to control how long the still stays on screen.
3. Pick Background Color and Quality Preset: Background Color (default Black) fills any letterbox bars when the photo's shape differs from the video frame. Leave Quality Preset on Very High (Recommended), or set a Video resolution preset to cap the output size. Under Video Codec you can keep the default FLV (Sorenson Spark) or switch to H.264.
4. Convert and Download: Click "Convert" and download your FLV. No sign-up, no watermark. The output is silent by design.

Frequently Asked Questions

Should I convert CRW to FLV, or to JPG or MP4 instead?

For almost every purpose, JPG or MP4. A CRW is a legacy Canon RAW still and FLV is a Flash-era video container whose player has been dead since the end of 2020, so this pairing mismatches twice — still-into-video and old-RAW-into-dead-Flash-format. If you want to view, print, or share the photo, convert CRW to JPG. If you genuinely need the photo as a playable clip, CRW to MP4 produces an H.264 file that plays on phones, browsers, and modern editors. Choose FLV only when a specific older Flash-based system still insists on the .flv extension.

What is CRW, and why is it considered Canon's oldest RAW format?

CRW is Canon's first-generation RAW format, built on the CIFF (Camera Image File Format) container rather than the TIFF base that later Canon RAWs use; Canon published the CIFF specification in 1997. Cameras like the EOS D30, D60, 10D, and 300D (Digital Rebel), plus PowerShot models such as the G1–G6 and S30–S70, wrote CRW from roughly 2000 to 2004. Canon then replaced CRW with the TIFF-based CR2 (around the EOS 20D and 350D), and replaced CR2 with the QuickTime-based CR3 in 2018 — which makes CRW the oldest and most legacy of Canon's RAW formats. That age is exactly why a normal photo viewer cannot open it and a conversion is needed.

Does converting a single CRW to FLV create any motion?

No. A CRW is one still photograph, so a single-file conversion produces a freeze-frame clip — the rendered image held on screen for the Image Duration you set, with no panning or movement. To build a moving sequence you need several CRWs combined with the Merge images option; one file can only ever become one static frame.

Which video codec does the FLV output use, and why is it silent?

By default the video uses FLV1 / Sorenson Spark, the proprietary H.263 variant that Flash Player 6 and 7 required, inside the FLV container. Under the Video Codec menu you can switch to H.264 (also valid inside FLV) or to the Flash Screen Video codecs. The output has no audio because a single CRW is a still photograph with no sound to encode — the converter detects an image source and writes a video-only file, so the clip is silent by design. If you want music, convert first, then add an audio track in a video editor.

Will I lose image quality going from a RAW CRW to FLV?

Yes, and it is inherent to the conversion rather than a tool flaw. A CRW holds unprocessed sensor data that must be demosaiced to become viewable; that render bakes in white balance, exposure, and tone, locking away the latitude that is the whole point of shooting RAW. An 8–12 MP CRW is then scaled down to a video frame — even that modest pixel count exceeds a standard-definition FLV frame, so resolution is discarded too. On top of that, the default FLV1 (Sorenson Spark) codec is an old, low-efficiency H.263 variant. Keep the original CRW as your master; treat the FLV as a delivery copy, not an archive.

Can I still play an FLV file now that Flash Player is gone?

Yes. Adobe Flash Player reached end of life on December 31, 2020, and Adobe blocked Flash content from running shortly after — but FLV is just a container, and players such as VLC, MPV, and ffmpeg ship their own FLV codecs, so they open .flv files without Flash installed. What you lose is broad, casual compatibility: most browsers, phones, editors, and upload pipelines no longer accept FLV. For a clip that plays everywhere, CRW to MP4 is the safer target. In our testing, a 10-megapixel CRW from an early Canon DSLR at the Very High preset produced a short, silent FLV that opened directly in VLC with no extra codec download.

What happens to my uploaded CRW file after conversion?

Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after the conversion — no sign-up, no watermark, never shared or made public. In practice the limit you will hit first is upload time rather than a hard cap; early-Canon CRW files are typically only a few megabytes each, so they move quickly even in batches.