Hit Exact File Size Limits Every Time
Calculate the exact video bitrate needed to upload your clips to Discord, Twitter, Reddit, or WhatsApp without bounce-backs.
Quick Presets:
1 Target Size & Video Duration
Discord Free buffer target (24.5 MB)
Hours
Minutes
Seconds
2 Safety Margin & Encoding Options
Recommended Video Bitrate
2,150
kbps
or 2.15 Mbps
Total Stream Bitrate
2,278 kbps
Allocated Audio Bitrate
128 kbps
Total Video Duration
90 seconds
Estimated Final File Size
~24.50 MB
Ready-to-use FFmpeg Command:
ffmpeg -i input.mp4 -c:v libx264 -b:v 2150k -maxrate 2150k -bufsize 4300k -c:a aac -b:a 128k output.mp4
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Understanding Video Compression & Discord Limits
When compressing video clips to fit strict file size barriers, setting a Constant Bitrate (CBR) or constrained Variable Bitrate (2-pass VBR) is required. If your clip is longer than 2 minutes, attempting to upload 1080p60 directly will often exceed Discord's 25MB cap; in those cases, lowering resolution to 720p while preserving the calculated bitrate yields vastly superior visual quality than forcing a 1080p stream at low bits-per-pixel.