Video Size Converter

Resizes videos to Instagram presets with aspect-ratio options for reels, stories, and feed posts.

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About This Tool

This tool enables precise resizing of video assets to Instagram presets, addressing the need for consistent aspect ratios across reels, stories, and feed posts. It accepts a source video and a target IG format, then outputs a ready-to-upload MP4 file that matches the selected dimensions. Conceptually, the process involves mapping Instagram presets to standard resolutions, selecting a crop strategy, and re-encoding the video with appropriate bitrate and codec settings. It is designed for social media managers, creators, and teams who require repeatable, platform-aligned outputs without manual frame-by-frame edits. The system emphasizes deterministic results: the output resolution, crop behavior, and encoding parameters are clearly defined and repeatable across multiple videos. Unique value lies in combining preset-based resizing with optional overrides (resolution, bitrate, frame rate) while maintaining quality and compliance with IG's framing guidelines. Core features include preset mappings for reels (9:16), stories (9:16), and feed (1:1 or 4:5), fit vs crop options, and sensible defaults for encoding. Use cases range from repurposing long-form content into IG-friendly clips, producing batch-ready assets for campaigns, to converting client deliverables for social delivery. Outputs provide metadata such as final resolution, duration, and estimated file size to aid planning and upload scheduling.

How to Use

  1. Provide inputs: upload source video and select Instagram preset (Reels, Stories, Feed).
  2. Choose method: Fit (letterbox/pillarbox) or Crop (center crop) to target aspect.
  3. Optional: adjust output resolution, bitrate, and frame rate to align with quality goals.
  4. Run conversion and wait for processing to complete.
  5. Download output video and verify final properties before posting.
How to use video size converter for instagram

Frequently Asked Questions

Find Quick Answers

Which IG formats are supported and what resolutions are used?
Supported formats include Reels (9:16), Stories (9:16), and Feed (1:1 or 4:5). The tool uses standard IG resolutions like 1080x1920 for vertical formats and 1080x1080 or 1080x1350 for feed posts, with options to override if needed.
Can it preserve the original duration and audio?
Yes. The tool re-encodes the video to the target dimensions while preserving the duration. Audio is kept with configurable bitrate; if audio is disabled, the output will omit sound.
What codecs are used and how are outputs optimized for Instagram?
Output is typically H.264 in MP4 with a profile suitable for social platforms. Bitrate and frame rate can be adjusted; presets aim to balance quality and file size within IG limits.
Can I batch resize multiple videos at once?
Batch processing is supported in advanced configurations, enabling consistent outputs across a library of videos by applying the same preset, crop mode, and encoding settings.

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