Video Compressor
Transcode video to H.264/AAC MP4 at a chosen quality. A lossy MP4 video, optionally at a lower resolution. Transcoding is lossy and may take substantial time for long videos.
Processed locally in your browser — files are never uploaded
Why use this converter?
Key details about this conversion path.
CRF controls video quality and size
Lower CRF values retain more detail for better quality; higher CRF values generally produce smaller files.
A defined operational boundary
Transcoding is lossy and may take substantial time for long videos.
Focused on file-size reduction
Transcode video to H.264/AAC MP4 at a chosen quality. Transcoding is lossy and may take substantial time for long videos.
Controls for this operation
This tool exposes Quality (CRF, lower = better), Resolution settings before processing.
How to use this converter
Follow these three steps.
- 1
Add your input
Select or drop One supported MP4, WebM, MOV, AVI, or MKV video.
- 2
Choose settings
Review Quality (CRF, lower = better), Resolution before processing.
- 3
Process and download
A lossy MP4 video, optionally at a lower resolution.
Frequently asked questions
Details about this conversion and its output.
Transcode video to H.264/AAC MP4 at a chosen quality.
Lower CRF values retain more detail for better quality; higher CRF values generally produce smaller files.
Transcoding is lossy and may take substantial time for long videos.
Example use: Preparing videos for upload.
One supported MP4, WebM, MOV, AVI, or MKV video.
A lossy MP4 video, optionally at a lower resolution.
Common use cases
Practical ways to use this tool.
- Preparing videos for upload
- Reducing sharing size
Related tools
Explore another conversion or file tool.