Media Formats and Limits
Soku supports a range of video and image formats for uploading to the Media Library. This page covers accepted file types, size limits, and automatic conversions that Soku applies to ensure compatibility across social media platforms.
| Format | Extension | Max File Size |
|---|
| MPEG-4 | .mp4 | 500 MB |
| QuickTime | .mov | 500 MB |
| WebM | .webm | 500 MB |
| Matroska | .mkv | 500 MB |
MP4 is the most widely supported format across all social platforms. If you are unsure which format to use, MP4 is the safest choice.
| Format | Extension | Max File Size |
|---|
| JPEG | .jpg, .jpeg | 50 MB |
| PNG | .png | 50 MB |
| WebP | .webp | 50 MB |
Automatic Conversions
PNG to JPEG
When you upload a PNG image, Soku automatically converts it to JPEG format. This conversion happens in the background and ensures that your images are compatible with all supported social media platforms, since not every platform accepts PNG files in all contexts.
The converted JPEG version is what gets stored in your Media Library and used when publishing.
If your image relies on transparency (which JPEG does not support), be aware that transparent areas will be filled with a white background during conversion.
Storage Locations
Uploaded files are stored in Firebase Storage under your user account:
| Media Type | Storage Path |
|---|
| Videos | users/{uid}/videos/ |
| Images | users/{uid}/images/ |
Different social media platforms have their own media requirements (resolution, aspect ratio, duration). Soku handles the publishing-side formatting, but for best results keep the following in mind:
| Consideration | Recommendation |
|---|
| Aspect ratio | 9:16 for vertical video (TikTok, Reels, Shorts), 16:9 for landscape (YouTube, Facebook), 1:1 for square (Instagram feed) |
| Video duration | Check each platform’s limits — for example, TikTok allows up to 10 minutes, YouTube Shorts up to 60 seconds |
| Image resolution | At least 1080px on the shortest side for best quality across platforms |
Troubleshooting Upload Issues
| Problem | Solution |
|---|
| Upload fails immediately | Check that your file is in a supported format and under the size limit. |
| Upload stalls or times out | Check your internet connection. Large video files may take several minutes on slower connections. |
| Image looks different after upload | PNG files are converted to JPEG automatically. Transparency is replaced with a white background. |
Related Pages
