Windows · Guide
How to Convert Video Files on Windows
Short answer
Use HandBrake, a free open-source converter, to change a video's format, resolution, or file size on Windows 11 or 10. Open the source file, pick a preset, and click Start Encode.
Requirements
- Windows 11 or Windows 10
- HandBrake (free)
- The source video file
- Enough free disk space for both the original and converted file
Steps
1. Install HandBrake
Download HandBrake from handbrake.fr and install it. It is free and open-source.
2. Open your source file
Launch HandBrake, click Open Source, and select your video file or a folder of files for batch conversion.
3. Pick a preset
In the right-hand panel, choose a preset such as Fast 1080p30 under the General or Web categories depending on your target use.
4. Choose the output format
Under the Summary tab, set the container to MP4 for the widest compatibility, or MKV to keep multiple audio and subtitle tracks.
5. Set the destination and start
Choose a save location at the bottom of the window, then click Start Encode. Progress shows in the bottom status bar.
6. Check the result
Play the converted file to confirm audio, video, and subtitles came through as expected before deleting the original.
Alternative methods
1. Use FFmpeg for scripted conversions
FFmpeg's command line handles batch and automated conversions, for example ffmpeg -i input.mov -c:v libx264 output.mp4.
2. Use LosslessCut for trimming without re-encoding
If you only need to cut a clip rather than change its format, LosslessCut trims MP4 and MKV files without quality loss or long processing times.
Troubleshooting
HandBrake fails to open my source file
The file may use a codec HandBrake's libraries do not decode, or it is a copy-protected disc image. Confirm the file plays in a standard player first.
The converted video is much larger than expected
Lower the video quality slider (RF value) or reduce the bitrate under the Video tab; higher RF numbers mean smaller files.
Audio is out of sync after conversion
Try a different preset, or under the Audio tab set the track's mixdown and sample rate to match the source rather than leaving it on Auto.
Frequently asked questions
Does converting video reduce quality?
Any re-encode involves some quality loss unless you use a lossless codec, but a good preset at a reasonable bitrate is visually indistinguishable from the source for most viewers.
Which format should I convert to?
MP4 with H.264 video is the safest choice for compatibility across devices and platforms.
Is HandBrake really free?
Yes, HandBrake is free and open-source with no paid tier or watermark.