File uploader
How to Upload Videos to 4chan and Troubleshooting Checklist
1. Basic Rules to Know Before Posting Videos on 4chan
While 4chan allows anonymous postings, only WebM format is supported on image boards for videos. Basic restrictions are: no audio, under 120 seconds, under 3 MB, and maximum resolution of 2048×2048.
- Format: WebM (VP8/VP9 + silent)
- Duration: up to 120 seconds (2 minutes)
- File Size: up to 3 MB
- Resolution: up to 2048×2048
Additionally, reports suggest that on /gif/ and /wsg/, uploads may be allowed up to 6 MB.
2. Steps to Convert to WebM (Using FFmpeg)
Convert the video to WebM format before posting. Below is an example command for FFmpeg:
ffmpeg -i input.mp4 -c:v libvpx -crf 10 -b:v 1500K -an -vf scale=1280:-1 output.webm-an: Remove audio-crf,-b:v: Adjust quality and bitrate-vf scale: Specify width only to maintain aspect ratio
If targeting a maximum of 120 seconds and 3 MB, the bitrate can be estimated by calculating “(3 *1024*8) / duration”.
3. Posting Procedure Summary Checklist
- Must be in WebM format (no audio)
- Under 120 seconds
- Compressed to under 3 MB
- Resolution below 2048×2048
- Select the appropriate board (e.g., /gif/)
- Authenticate via CAPTCHA input or 4chan Pass
- Input comments and tags
- Click the upload button
4. Common Posting Issues and Solutions
● Error: "File too large"
→ Lower the bitrate again using FFmpeg, or split the video and post multiple segments.
● Error: "Invalid format"
→ Double-check if it is in WebM format and has no audio, verify with a different player.
● CAPTCHA not authenticating / long wait times
→ Consider purchasing a 4chan Pass temporarily. For around $30 to $60 per year, you can skip CAPTCHAs.
5. Smart Video Sharing with UploadF
Here UploadF comes in handy. UploadF is a free file uploader that supports PC and mobile, allowing bulk uploads of up to 100 files. It has a URL shortening feature, eliminating worries about long URLs disrupting threads.
- Visit uploadf.com
- Select videos by drag-and-drop
- After uploading, copy the shortened URL
- Paste it in the 4chan post box to complete
File deletion and individual management are possible, and the secure random generation for storage ensures safety.
Conclusion: Easily and Safely Post Videos to 4chan
Using WebM conversion and UploadF, posting videos to 4chan is easy and smart. Select high-quality, short, and lightweight videos and follow the rules for smooth posting.
After posting, check the reactions in the thread and aim for works that resonate!
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