Video Resizer
Resize Video for Shorts, Reels, TikTok, and Stream Scenes
Resize videos for the aspect ratio you need without leaving your browser. Reframe assets for short-form clips, square promos, or landscape stream scenes.
Process one clip from start to finish
Convert one video into multiple social and streaming aspect ratios.
No upload required. The file stays on your device while the tool runs.
Chrome and Edge generally perform best, especially for longer 1080p and 4K media.
Use it for quick cleanup and conversion before scheduling, looping, or publishing in Upstream.
Upload, tune, and export in one pass
Choose the source file
Drop in one video file from your device. Supported formats: MP4, MOV, WebM, M4V.
Adjust the settings
Use the preset that matches the output you want, then compare the result before downloading it.
Run the tool
Large files can take a while, especially when the browser has to re-encode media before export.
Where this fits
These pages are built for one-shot media tasks, not full timeline editing.
Turn one promo into Shorts, Reels, and TikTok cuts.
Resize trailers for landscape stream intros.
Prep vertical videos for creator marketing campaigns.
Need more than a one-off tool?
Use Upstream Studio when you want to turn these finished assets into scheduled streams, looping channels, countdowns, or always-on live programming.
Explore Upstream StudioFrom quick prep to full streaming workflows
These free utilities cover the small jobs around content creation. For continuous channels and team production, Upstream also supports 24/7 live streaming, pre-recorded live streams, multistreaming, and Live Studio broadcasts.
For this tool, the closest next step is multistreaming, so that workflow appears first below.
Send one feed to every platform that matters.
Go live to YouTube, Twitch, Kick, Facebook, Rumble, and custom RTMP without making your upload connection carry every copy.
Explore multistreaming
Keep a cloud channel live around the clock.
Upload once, build a playlist, and let Upstream run continuous live playout without OBS, a VPS, or an always-on computer.
Explore 24/7 streaming
Schedule finished videos as live events.
Turn recordings into scheduled live streams, premieres, loops, and recurring broadcasts from the same cloud workflow.
Explore pre-recorded streaming
Produce browser-based live shows with guests.
Invite speakers, share screens, manage scenes, and add branded overlays for podcasts, webinars, interviews, and launches.
Explore Live Studio