Question 1

Will compressed videos be uploaded to servers?

Accepted Answer

No. Compression is entirely local in your browser; the video never leaves your device, safe and private.

Question 2

Why didn't the file size decrease much after compression?

Accepted Answer

If the original video is already highly compressed, further compression has limited effect. You can try increasing the compression level or reducing the resolution (e.g., from 1080p to 720p) to reduce the file size further.

Question 3

Will compression reduce video quality?

Accepted Answer

Yes, there will be some loss. Compression essentially trades higher encoding efficiency for smaller size; the stronger the compression, the more noticeable the quality loss. It's recommended to preview the effect with the 'Standard' level first.

Question 4

Is it normal for compression to be slow for large videos?

Accepted Answer

Yes, it's normal. Transcoding within the browser is limited by device performance; single-threaded processing is slower. Please keep the page open during processing.

Video Compression

FAQ