Compress a video to 100 MB

You are uploading to a corporate intranet or educational portal where a round hundred megabytes is the canonical perimeter for attachments, homework submissions, and project deliverables. Enterprise ticketing systems, university coursework portals like Canvas or Blackboard, and code hosting repositories like GitHub enforce this boundary to conserve server bandwidth and maintain fast load times for reviewers. Crossing this threshold often results in immediate upload rejection or requires navigating complex cloud drive sharing permissions. Compressing your screencast or assignment capture into this footprint delivers the highest possible visual clarity for diagrams and slide text while passing intake validation seamlessly.

How long a video fits in 100 MB

The longest clip that keeps each resolution at each quality, worked out with the same arithmetic FitSize uses to plan an encode. Times use h, m and s for hours, minutes and seconds, and are rounded down, so a clip at the listed length fits.

Assumes 30 fps, a 16:9 picture and stereo AAC audio at 128 kbps. A different frame rate, a taller picture or a bigger audio track changes the times.

Worked examples

• A 30-second clip: 1080p at Balanced quality (that resolution holds up to 2 min 31 s).
• A 2-minute clip: 1080p at Balanced quality (that resolution holds up to 2 min 31 s).
• A 10-minute clip: 480p at Balanced quality (that resolution holds up to 11 min 31 s).

What quality to expect

A 2-minute 720p clip at this size gets about 0.229 bits per pixel per frame. That is above our High preset (0.12), so the clip should look close to the original at that resolution. This is an estimate from bitrate arithmetic, not a measurement: real quality depends on the footage, and fast motion or fine detail needs more.

Who needs 100 MB

These verified limits are at or just above 100 MB.

What each of these limits covers

• GitHub: Video, repository on a paid plan. Videos over 10 MB also require you to be an organization member, an outside collaborator, or on a paid plan yourself. Source: docs.github.com
• Gradescope: Individual PDF submission. Individual PDFs up to 100 MB. Instructor uploads have a higher limit of 256 MB. Source: guides.gradescope.com
• Gradescope: Programming assignment (all files together). Up to 256 individual files (or a zip) and 100 MB in total uploaded directly; larger submissions can use the GitHub or Bitbucket integration. Source: guides.gradescope.com
• Microsoft Teams: Chat attachments. The chat limits table lists a 100 MB file size limitation and at most 10 attachments per message. Files shared in chat are stored in OneDrive or SharePoint, which have their own, larger limit (see teams-channel-files). Source: learn.microsoft.com
• Schoology: File upload (enhanced) question type. PowerSchool's documentation for the enhanced file upload question says there is a file size limit of 100 MB for uploaded files. Source: uc.powerschool-docs.com
• Turnitin: Paper submission (single file). A submitted file must be under 100 MB and under 800 pages. The page is Turnitin's general submission requirements; an institution's integration (LMS plugin) may add its own limit. Source: guides.turnitin.com
• WhatsApp: Video, faster connection. Default video size limit for users on a faster connection, with 720p resolution. This is the Web help page; other platforms' pages may differ. The older 16 MB figure many guides quote does not appear on this page. Supported video formats listed: 3GP, AVI, FLV, MKV, MOV, MP4. Source: faq.whatsapp.com

Tips at 100 MB

1. For classroom lectures, corporate slide decks, or software bug demonstrations, prioritize textual clarity over high framerates: reducing capture rates down to fifteen frames per second preserves razor-sharp 1080p type without consuming redundant bit allocations on static slide backgrounds.
2. Software engineers pushing demo screencasts or reproducible test recordings directly into Git repositories must stay strictly below this barrier to prevent commit rejection hooks and avoid setting up complex external Git Large File Storage pointers.
3. Check whether your academic LMS portal or workplace inbox caps duration alongside bytes: several educational dropboxes enforce twenty-minute maximums regardless of whether your file comfortably clears the hundred-megabyte size requirement.