A desktop-grade video converter for Windows
Video conversion is the format the cloud is worst at. Master files run gigabytes; web converters cap free uploads at a few hundred MB; encode time on a shared server is unpredictable; and confidential footage doesn’t belong on someone else’s machine. File Converter Pro runs the encoder locally with FFmpeg-class quality on your own CPU.
The same engine handles MP4 ↔ MKV ↔ MOV ↔ WebM ↔ AVI ↔ WMV — remuxing where possible (lossless, instant) or re-encoding to H.264, H.265 or AV1 with full control over bitrate, CRF, audio codec and subtitle handling.
Supported formats
- MP4 — universal cross-device container.
- MKV — best for archival; multi-track audio, soft subtitles, chapters.
- MOV — Apple QuickTime; iPhone and Mac default.
- WebM — VP9 / AV1 + Opus, browser-native delivery.
- AVI / WMV — legacy formats kept for older players.
Codec coverage: H.264, H.265 (HEVC), AV1, VP9, MPEG-4 ASP. Audio: AAC, MP3, Opus, AC-3, passthrough.
Popular conversions
MKV to MP4
Universal compatibility — iOS, smart-TVs, social uploads.
MOV to MP4
iPhone footage to universal MP4 for Slack, Android and YouTube.
MP4 to WebM
Browser-native delivery with VP9 / AV1 + Opus, smaller files.
WebM to MP4
Save downloaded WebM clips as MP4 for editors and TV playback.
MP4 to GIF
Quick clips for Slack, Discord and chat — palette-optimized GIFs.
Why choose File Converter Pro for video conversion
- Stays offline. Multi-gigabyte master files never leave your computer.
- No size cap. Convert 4 GB Blu-ray rips, 8K drone footage, hours of screen recording.
- No watermark. Outputs are clean, even on the free trial.
- Hardware acceleration. Use Intel QSV, NVIDIA NVENC or AMD AMF for fast encodes when available.
- Subtitle handling. Keep soft subtitle tracks or burn them into the video.
- Multi-track audio. Carry multiple audio languages or downmix to stereo.
Real-world workflows
Content creators remux MKV recordings to MP4 for upload to YouTube, Vimeo and TikTok — instant, lossless, no re-encode time.
Web teams generate WebM versions of hero loops and demo videos for browser-native HTML5 playback. Two-pass VP9 produces 30 % smaller files at the same visual quality.
iPhone users convert .MOV exports to MP4 for sharing on Android, Slack and Microsoft Teams without compatibility surprises.
Educators trim and re-encode lecture recordings for LMS upload — bitrate caps, resolution presets and chapter markers all handled.
FAQ
Will video conversion lose quality?
Only if you re-encode. Many conversions are remuxes — the streams are repackaged into a new container with no quality loss and no encode time. Re-encoding to a different codec (H.265, AV1) does drop a small amount of detail at sensible CRF settings.
Does it support hardware acceleration?
Yes when your hardware supports it — Intel Quick Sync Video, NVIDIA NVENC and AMD AMF for H.264 and HEVC encoding. Encode times drop 5-15× compared to software encoding.
Can I keep multiple audio tracks and subtitles?
Yes. The output panel lists every track in the source — pick which audio languages and subtitle layers carry to the output. Soft subtitles stay selectable in players; hard subtitles are burned in.
Is video conversion offline?
Yes. Encoding runs on your Windows PC. Confidential footage and multi-gigabyte master files never go to a cloud service.
Start converting now
Install File Converter Pro from the Microsoft Store and run your video pipeline locally with FFmpeg-class control — no upload, no quota, no watermark.