Guides / How to compress a video for WeChat (under 25MB) on Mac

How to compress a video for WeChat (under 25MB) on Mac

Updated 2026-06-11 · Runs locally — nothing uploaded

Quick answer

WeChat caps chat videos at 25MB. Shrink any clip to fit on your Mac — no command line, nothing uploaded. One click with FFmix.

Output: WeChat ≤ 25MB
Processing: On your Mac
Setup: About 2 minutes to set up
Access: Free local task

Trying to send a clip in WeChat and it won’t go through? A chat file has to be 25MB or smaller, and phone video clears that in seconds.

FFmix has a one-click WeChat ≤ 25MB preset that calculates the target bitrate from the clip length and adapts it to the active engine — locally, so nothing is uploaded.

Steps

1 Drag your clip into FFmix.
2 Pick the WeChat ≤ 25MB preset (or set a 25MB target in Compress).
3 Confirm and click Start — the file shrinks to fit the chat limit.

Advanced: canonical ffmpeg recipe

This is the canonical recipe. FFmix adapts encoder flags to the engine on your Mac, then shows the final command; the command shown is the command run.

ffmpeg -i input.mp4 -vf scale=-2:720 -c:v libx264 -b:v 1450k -pass 2 -c:a aac -b:a 96k wechat.mp4

FFmix has a one-click "WeChat ≤ 25MB" preset

Drop a file and go — all local, nothing uploaded.

Download FFmix free

FAQ

What's WeChat's video size limit in a chat?

WeChat lets you send video files up to 25MB in a one-to-one or group chat. Larger clips get rejected or heavily recompressed, so it's better to hit the target yourself.

Will the video still look okay?

FFmix computes a target bitrate and caps at 720p. The App Store build uses VideoToolbox ABR; a compatible external software engine can use two passes. Very long clips may need trimming.

Is my video uploaded to compress it?

No. Everything runs locally on your Mac through the bundled ffmpeg engine.

Screen recordings are huge but compress well. Shrink yours on your Mac while keeping UI text sharp — no command line, nothing uploaded.

How to compress a video for Discord (under 10MB, free)

Discord's free upload limit is 10MB. Shrink any clip to fit on your Mac — no Nitro, no upload to a website. One click with FFmix.

How to compress a video for email on Mac (under 20 MB)

Make a MOV or MP4 small enough to email from your Mac with a 20 MB target, 720p cap and engine-adapted local compression. No upload or command line.

How to reduce video file size on Mac without losing quality

Cut a video's size by roughly half at the same visual quality using H.265 — on your Mac, no command line, nothing uploaded. FFmix does it in one step.