Start with framing and a clean source, then choose the export for the destination. Vertical, square and landscape videos use different safe areas. Resolution, frame rate, bitrate and audio should support the content rather than chase a number.
FAST-VID produces a completed MP4 for supported public links. It does not crop, resize, add captions, normalize loudness or create platform-specific exports. Use an editor for those steps.
Aspect ratios and safe areas
Vertical video is commonly 9:16, square is 1:1 and landscape is 16:9. These are conventions, not universal requirements. A platform may accept a range of ratios and crop or letterbox the result.
Keep important text, faces and logos away from the outer edges. Interface overlays, captions and buttons can cover different parts of the frame on different devices. Preview the actual post rather than judging only from the editor timeline.
Instagram’s Reels help page describes an upload ratio between 1.91:1 and 9:16, a minimum resolution of 720 pixels and a minimum frame rate of 30 FPS. That is a current platform statement, not a universal rule for every Instagram surface.
Resolution, frame rate and bitrate
Match resolution to the destination and source. Upscaling a low-resolution original adds pixels but not detail. Downscaling a high-resolution master can be useful for size, but keep the master for future reuse.
Frame rate should generally match the source and the motion. Converting 24 fps to 30 fps or 60 fps involves interpolation or duplication and can change the look. Avoid mixing frame rates in one timeline when possible.
Bitrate affects compression and file size. YouTube publishes recommended upload bitrates by resolution and frame rate; other platforms publish different guidance. These are recommendations for their processing pipeline, not a guarantee of final quality.
| Format | Typical frame | Practical note |
|---|---|---|
| Vertical | 9:16 | Keep text away from top and bottom overlays |
| Square | 1:1 | Useful for feed posts; check crop on other placements |
| Landscape | 16:9 | Common for long-form and embedded players |
| Portrait feed | 4:5 or similar | Platform-specific; verify current guidance |
Audio and synchronization
A clean audio mix matters more than a high video bitrate. Keep dialogue intelligible, avoid clipping and check that music does not mask speech. Some platforms normalize loudness or re-encode audio, so leave sensible headroom.
Confirm sync after every export. A frame-rate conversion, variable-frame-rate source or offset can make lip sync drift. Check a few points across the clip, not only the opening seconds.
Captions should be readable at the size people actually view. Burned-in captions cannot be turned off; platform captions can be edited but may be inaccurate. Choose deliberately.
Platform guidance changes
YouTube’s recommended upload settings emphasize MP4, common codecs and standard color practices. Instagram publishes Reels and feed guidance that can differ by surface. TikTok and Facebook publish their own upload guidance. These pages change, so check the current version before a major campaign.
Do not copy a “2023 best settings” list into a 2026 upload without checking. Resolution limits, duration, aspect ratios, bitrates and caption behavior can change by platform, region and account type.
The sources in this article were checked for general orientation in November 2026. They are not a substitute for the platform’s current requirements for your specific post.
Why platforms recompress
Platforms recompress and package uploads to deliver many resolutions to many devices efficiently. Your clean file is an input, not necessarily the exact bytes viewers receive. Recompression can soften fine detail, change grain or affect dark gradients.
Upload a good master with appropriate headroom rather than a file that is already heavily compressed. Aggressive sharpening or noise reduction before upload can become more visible after another encode.
If the result looks wrong, compare the original and the platform preview on the same screen. Do not assume the upload is broken until you have checked the actual playback quality setting.
A practical export workflow
Edit from the best source, keep a clean master, then export a platform version. Name files by destination and version. Check the first and last frames, audio sync, captions and the safe area.
For multiple destinations, export separately rather than stretching one file to fit all. A vertical cut, a square cut and a landscape cut can use different framing and text placement.
Keep the master and project file. A platform export is disposable; the source and edit are what let you make a better version later.
What FAST-VID does and does not do
FAST-VID can produce a completed MP4 from a supported public link. It does not crop, resize, reframe, caption, normalize, mix audio or guarantee a platform-ready export.
If you download source footage for a project, confirm that you have permission to reuse it. A public link is not a licence, and platform terms may separately restrict downloading or re-uploading.
Use an editor for the social export and follow the destination’s current guidance. FAST-VID does not bypass private, live or DRM-protected content.
Common export mistakes
Stretching a landscape edit into a vertical frame can distort faces and text. Cropping without checking the safe area can hide captions under platform controls. Exporting only a heavily compressed file gives the platform less detail to work with.
Another common mistake is assuming that a platform’s preview equals the final encode. Check the published post on the device your audience uses, and keep the clean master for a corrected export. One platform’s successful upload is not proof that another platform will handle the same file well. Export settings are part of the destination workflow, not a universal preset. Keep captions and key text inside the safe area for every version. Always preview each export on a phone before uploading it.
Frequently asked questions
What aspect ratio should I use for social media?
It depends on the placement. Vertical is commonly 9:16, square 1:1 and landscape 16:9, but platforms accept different ranges and may crop. Check current guidance and preview the post.
Does uploading a higher resolution always improve quality?
No. If the source lacks detail, upscaling does not add it. A clean master and appropriate bitrate matter more than a large number.
Why does my video look softer after upload?
The platform may recompress it and serve a different quality level. Start with a good master and check playback settings.
Do I need different files for each platform?
Often yes. Aspect ratio, safe areas, duration and recommended settings differ. Separate exports are usually more reliable than one stretched file.
Does FAST-VID prepare platform-specific exports?
No. FAST-VID provides a completed MP4 for supported public links. Cropping, captions, audio mixing and platform-specific settings require an editor.
Sources and references
- YouTube Help: Recommended upload encoding settings
- Instagram Help: Reel size and aspect ratios
- TikTok Support: Video parameters
- Facebook Help: Video specifications
- FAST-VID: Best video format for a smart TV
Try FAST-VID
Open the FAST-VID downloader for a supported public link. Use an editor for cropping, captions and platform-specific exports; FAST-VID does not edit video.