Formats
What can be uploaded and what can be checked — the library’s two format lists.
verstag keeps two format lists: one for uploading and a longer one for checking. A WebP therefore appears in the format filter and still cannot be uploaded.
What is meant here are the formats of the files coming in. The target formats the editor produces outputs in — screen sizes, print dimensions — are a different thing, maintained inside the workspace itself.
The signed-in product speaks German, so its labels are quoted in German below, with the English rendering in italics.
The two lists
| Format | Upload | Check |
|---|---|---|
| PNG | yes | yes |
| JPEG | yes | yes |
| MP4 | yes | yes |
| MOV | yes | yes |
| WebP | no | yes |
| TIFF | no | yes |
| AVIF | no | yes |
| HEIC / HEIF | no | yes |
| GIF | no | yes |
Reading is not signing. Content Credentials can be read out of all nine formats. verstag can only produce them for the four above.
The route for the other five
A WebP, TIFF, AVIF, HEIC or GIF enters the library via „Prüfen“ (Verify): check the file, then choose „In Library speichern“ (Save to library) in the result.
What that creates is an asset without an editor. It carries its verification result, its provenance chain and its place in a project — but no output can be produced from it and nothing can be marked on it. The asset is evidence, not source material.
The size limits
They belong to the route, not to the format:
| Route | Limit |
|---|---|
| Library: image | 100 MB |
| Library: video | 1 GB |
| Quick check: everything | 100 MB |
So the same 300 MB video file is accepted and verified by the library, while the quick check refuses it as soon as it is picked.
A video over 100 MB takes longer to verify; at 1 GB it can take a few minutes. Several such videos are verified one after another.
Videos: three further conditions
- Up to 3 minutes.
- Up to 4K — measured on the longer and the shorter edge, so portrait 2160 × 3840 passes exactly as landscape 3840 × 2160 does.
- No ProRes. A
.movextension says nothing about the codec inside, so the file is looked into before the upload.
All three are pre-checked in the browser and speak up before anything is transferred. If the browser cannot measure a file, it is transferred and refused when it is processed.
When a tile carries no image
A thumbnail is only produced where a browser can display the format at all. No browser can display TIFF, and only Safari can display HEIC and HEIF. For those assets the tile stays without an image; the result and every detail are there all the same.
For a video over 100 MB the thumbnail is usually made by the verification; until then its tile stays without an image. If there is not enough time for it, or the video cannot be decoded, the tile stays without an image afterwards too. The result is there all the same.
One more quirk when picking files: for HEIC files Chrome frequently reports no file type at all. The extension then decides — and an unknown extension means refusal, even though the format itself could be checked.