SWF to WTV Converter

How to Convert SWF to WTV Online

1. Upload Your SWF File: Drag and drop or click "+ Add Files" to select your Flash SWF animations. Batch upload is supported.
2. Pick Video Codec and Quality Preset: The default codec is H.264 (xconvert wraps it in the WTV container) with AAC audio. Switch to MPEG-2 if you need to match the codec Windows Media Center natively records in. For the Quality Preset, "Very High" is the default — drop to "High" or "Medium" if you want a smaller file.
3. Set Resolution, Background Color, and Trim (Optional): Pick a Preset Resolution (240p through 4320p, with 768p as default) or scale by Resolution Percentage. Because SWF is vector-based and lacks a fixed pixel size, also pick a Background Color (default black) for any transparent areas. Use Trim to grab a specific Start + Duration from longer animations.
4. Convert and Download: Click "Convert" and download the WTV file. 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.

Why Convert SWF to WTV?

SWF (Small Web Format) is Adobe's defunct Flash container — vector graphics, animation, video, and ActionScript bytecode all bundled together. Adobe ended Flash Player support on December 31, 2020 and started blocking SWF content from running on January 12, 2021. WTV (Windows Recorded TV Show) is the recording container Microsoft introduced with Windows 7 Media Center in 2009, replacing the older DVR-MS format. Converting SWF to WTV is mostly about getting Flash content into a Media Center "Recorded TV" library on legacy Windows 7 setups.

• Play Flash animations through Windows Media Center — Media Center won't open.swf, but it indexes any.wtv in \Users\Public\Recorded TV\ and plays it alongside actual TV recordings.
• Preserve Flash games and shorts after browser EOL — Chrome, Firefox, Edge, and Safari 14+ all stripped SWF support by early 2021. A WTV rip captures the rendered output as standard MPEG-style video so it keeps playing on any device.
• Add Flash cartoons to an HTPC library — older Home Theater PC builds running Windows 7 with a TV tuner card still use WTV as the native recording format; matching the container avoids re-indexing.
• Archive teaching content built in Adobe Animate/Flash — early-2000s e-learning modules shipped as SWF; converting to a Microsoft-native container makes them indexable by Windows Media Player and Windows file metadata.
• Migrate off Flash before final OS upgrade — Windows 10 (October 2015) dropped Media Center entirely, and Windows 10 itself reached end of support on October 14, 2025. Converting SWF files now gives you a video the next OS can still open.
• Need a different target? SWF to MP4 is far more portable for modern devices, and SWF to WMV gives you a smaller Microsoft-native file without the recorded-TV metadata.

SWF vs WTV — Format Comparison

Codec Choice — H.264 vs MPEG-2 in WTV

For audio, AAC is the default in xconvert's WTV pipeline; switch to AC-3 if you're trying to mirror an actual Media Center recording byte-for-byte.

Frequently Asked Questions

Why convert SWF to WTV instead of MP4?

MP4 is the better choice for almost any modern use case. WTV makes sense only when you specifically want the file to slot into a Windows 7 Media Center "Recorded TV" library, or when an HTPC tool only indexes.wtv. If neither applies, use SWF to MP4 instead.

Will the conversion preserve ActionScript interactivity?

No. SWF is part container, part runtime — ActionScript code, button clicks, and timeline scripts only run inside Flash Player, which Adobe killed on December 31, 2020. The conversion captures the visual output as linear video. Buttons, quizzes, and game logic stop working; only the animation plays back.

What happens with vector graphics during conversion?

xconvert renders the SWF to a fixed pixel grid (768p by default — adjust via the Resolution Preset). Vector content rasterizes cleanly at the chosen resolution but can no longer scale infinitely the way the.swf original could. Pick a higher preset (1080p or 1440p) if you want headroom for later upscaling.

Why does my converted WTV file have black bars or weird edges?

SWF stages often have transparent backgrounds or unusual aspect ratios (e.g. 550x400 from older Animate templates). The WTV container needs an opaque pixel grid, so the Background Color you set in Step 3 fills any transparent area. Try changing it from black to white, or pick a Preset Resolution that matches the SWF's native aspect ratio.

Can Windows Media Center on Windows 10 or 11 open these files?

Not officially. Microsoft removed Windows Media Center entirely starting with Windows 10 in 2015, and there's no Microsoft-supported way to bring it back. WTV files themselves still play in third-party tools (VLC opens them, ffmpeg parses them), but the "Recorded TV" experience is Windows 7 only. There are community efforts to revive Media Center on newer Windows, but none are official.

Why is the WTV file so much larger than my SWF?

Because the formats store completely different things. SWF stores compact vector instructions ("draw this shape, tween to here"); WTV stores fully rasterized pixels at 24-30 fps. A 200 KB SWF animation can easily become a 20-50 MB WTV depending on the resolution and codec you chose in Step 2. Lower the Quality Preset or pick a smaller Resolution to shrink the output.

How do I trim a long SWF before converting?

Use the Trim controls in Advanced Options. Set Start (in seconds) and Duration to grab a clip from the middle of a long animation. xconvert's trim works on the rendered timeline, so a 60-second SWF can be sliced to "Start 10s, Duration 20s" to extract just one scene. For more control over multi-segment cuts, the dedicated Video Cutter tool handles WTV output too.

Will the audio survive the conversion?

Yes, but it's re-encoded. SWF stores audio as MP3, ADPCM, Speex, or Nellymoser frames embedded in the timeline. The conversion pipeline decodes those, then re-encodes to AAC (default) or AC-3 for the WTV container. Quality is preserved at default bitrate (≥128 kbps); pick a higher Audio Bitrate in Advanced Options if the SWF used uncompressed PCM.

Are there file size limits?

No hard cap for typical SWF files — they're almost always under a few MB because the original Flash spec capped streaming sizes for the browser. For very long or vector-heavy SWFs that render to huge intermediate videos, the practical limit is whatever your browser can hold in memory during the upload step.