Lectures and recordings
- Plan your watching: the video speed calculator shows how long a lecture takes at 1.5× or 2×, and what speed you need to finish in time.
- Listen on the go: turn a recorded lecture into an MP3 with Video to MP3, then make it smaller with the audio compressor (64 kbps mono is ideal for speech).
- Get the words: if the video has captions as an SRT or VTT file, the subtitle converter turns them into a plain text transcript for notes.
Assignments and uploads
- Upload limits: course portals often cap files at 10–100 MB. Compress to 10 MB, or choose any size on the compressor.
- Screen recordings: browser and meeting recordings are often WebM, which some portals reject. WebM to MP4 fixes that.
- Presentations: trim the start and end of a recorded presentation with the trim tool before you submit.
Tips
Screen recordings with slides compress extremely well, so a 10-minute presentation usually fits in 25–50 MB with readable text. Keep your original until your work is marked. Check your course’s rules on recording and sharing lectures before redistributing anything.
Group projects and presentations
For group videos, agree on one format early: MP4 with H.264 plays on everyone’s laptop and every submission portal. Convert phone recordings with the video converter, trim each person’s part with the trim tool, and check the final size against the portal’s limit with the file size calculator before the deadline.
Language learning
Turn lessons or films you have the right to use into MP3s for listening practice, and if subtitles are out of sync with your copy of a video, the subtitle time shift tool fixes them in seconds.
Questions
How long is a 1-hour lecture at 1.5x speed?
40 minutes.
How do I make my assignment video smaller?
Use the compressor and choose the portal’s limit, such as 10 or 50 MB.
How do I turn a lecture recording into audio?
Use Video to MP3, then the audio compressor with Mono for the smallest file.
Is it free?
Yes. Free, with no sign-up and no watermark.