CR2 to ASF Converter
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Supports: CR2
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Need help?CR2 to ASF Converter
CR2 is Canon's version 2 RAW photo format; ASF (Advanced Systems Format) is Microsoft's streaming media container, best known by its .wmv cousin. Turning a still photo into an .asf file is a narrow, legacy-driven request: it makes sense when an old Windows tool, a Windows Media-era kiosk, or a streaming server insists on a .asf/.wmv clip and will not accept a still image. This converter renders the RAW frame, holds it on screen for a set duration, and wraps it in the ASF container. If you only want a usable picture, convert CR2 to JPG instead; if you want a photo-to-video slideshow that plays anywhere, CR2 to MP4 is the modern choice.
CR2 (Canon RAW v2) Format at a Glance
| Property | Value |
|---|---|
| Full name | Canon Raw version 2 |
| File structure | Based on TIFF (TIFF/EP lineage) with Canon maker-note tags |
| Data type | Unprocessed sensor RAW, typically 12- or 14-bit per channel |
| Introduced | 2005, with the Canon EOS line |
| Compression | Lossless JPEG (ITU-T81) for the RAW payload |
| Embedded preview | Full-size and thumbnail JPEG inside the file |
| Succeeded by | CR3 (2018), which uses an ISO base-media container and the crx codec |
| Best for | Archival originals and full-latitude editing before export |
ASF (Windows Media) Format at a Glance
| Property | Value |
|---|---|
| Full name | Advanced Systems Format (Microsoft) |
| Released | Proprietary 16 September 1996; public 26 February 1998 |
| Typical video codec | Windows Media Video (WMV) / VC-1 |
| Typical audio codec | Windows Media Audio (WMA) |
| Related extensions | .wmv (video) and .wma (audio-only) are the same format, different extension |
| Native playback | Windows Media Player, Windows Movie Maker, legacy Windows apps |
| Last specification | Version 01.20.03, December 2004 — not revised since |
| Best for | Old Windows-only playback, editing, or streaming pipelines |
How to Convert CR2 to ASF
- Upload Your CR2 File: Drag and drop your
.cr2file or click "+ Add Files". Batch upload is supported, and files are sent over an encrypted connection. - Pick a Video Codec: Open Advanced Options and set Video Codec. The default is H.264; for true Windows Media Player and Movie Maker compatibility, switch it to WMV 2 (or WMV 1) — see the codec note in the FAQ below.
- Set Image Duration and Frame (Optional): Image Duration controls how many seconds the still is held on screen (default 5 seconds per frame); use Background Color (default Black) to fill the letterbox when the photo's shape differs from the video frame, and Video resolution to downscale the 20-megapixel-class RAW to a sensible playback size.
- Convert and Download: Click "Convert" and download your
.asffile. No sign-up, no watermark.
Frequently Asked Questions
Why won't my CR2-to-ASF file play in Windows Media Player?
Most likely the Video Codec was left on the default H.264. Windows Media Player opens .asf files expecting a WMV or VC-1 stream and reports a missing codec when it finds H.264 inside the ASF container. If your goal is legacy Windows playback, re-run the conversion with Video Codec set to WMV 2 (or WMV 1); the file will then play in Windows Media Player, Movie Maker, and other native Windows tools. The trade-off is efficiency — WMV 2 is an older codec than H.264, so expect a larger file at equal quality.
Will the converted ASF have any sound?
No. A CR2 is a single still photo with no audio, so the output is a silent video of that frame held for the duration you set. There is no audio track to configure on this conversion. If you need narration or music over the image, add it afterward in a video editor, or start from a project that already contains an audio track.
Does the ASF keep the full quality and color depth of my Canon RAW?
No, and that is inherent to the target. A CR2 holds 12- or 14-bit unprocessed sensor data; ASF video carries an 8-bit-per-channel encoded stream, so the RAW is demosaiced, tone-mapped, and compressed into a standard video frame. You also lose the editing latitude RAW gives you. Keep the original .cr2 as your master and treat the .asf as a delivery copy. For a high-quality still you can edit, export CR2 to JPG or a 16-bit TIFF instead.
Should I convert CR2 to ASF or to WMV?
In terms of the file itself there is no difference — ASF, WMV, and WMA are the same Microsoft container with different extensions, and .wmv simply signals that the file holds video. Choose ASF when a specific tool or streaming server demands the .asf extension; choose CR2 to WMV when your software expects .wmv. Either way, pick a WMV codec for native Windows playback rather than the H.264 default.
Is ASF still a sensible format to deliver a photo video in?
Rarely. Microsoft last revised the Advanced Systems Format specification (01.20.03) in December 2004, and it is now a legacy container kept alive mainly by old Windows tooling. If you are not specifically targeting Windows Media Player, Movie Maker, or a pipeline that requires .asf/.wmv, CR2 to MP4 produces a smaller, more compatible file that plays on phones, browsers, and modern TVs without a codec hunt.
How long do you keep my uploaded CR2 and the converted file?
Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — there is no sign-up, no watermark, and files are never shared or made public. In our testing, a single 20-megapixel CR2 rendered to a 5-second WMV 2 clip at 1280×720 produced a noticeably larger file than the same still encoded to H.264 in MP4, which is expected given WMV 2's lower coding efficiency.