View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000669 | file | General | public | 2025-06-11 17:06 | 2025-07-23 18:50 |
| Reporter | mont29 | Assigned To | christos | ||
| Priority | normal | Severity | minor | Reproducibility | N/A |
| Status | feedback | Resolution | open | ||
| Summary | 0000669: Blender 5.0: Changes to the blend-file header | ||||
| Description | As of the upcoming Blender 5.0 release (expected in November 2025), blend-files created by Blender will use a new header format, which reflects internal data storage changes that allow a block to contain more than 2GB of data. So the `magic/Magdir/blender` file will likely need some updates. | ||||
| Steps To Reproduce | Attached is a blend-file generated with the new header. | ||||
| Additional Information | Here is the description of the new blend-file header format, as found in the [source code documentation](https://projects.blender.org/blender/blender/src/commit/ad1bb4602dfa012057722b49beff4f1895e60811/source/blender/blenloader_core/BLO_core_blend_header.hh#L27): ``` /** * Lower level version 1: the header is 17 bytes long. * 0-6: 'BLENDER' * 7-8: size of the header in bytes encoded as ASCII digits (always '17' currently) * 9: always '-' * 10-11: File version format as ASCII digits (always '01' currently) * 12: always 'v' * 13-16: 4 ASCII digits encoding #BLENDER_FILE_VERSION (e.g. '0405' for Blender 4.5) * * With this header, #LargeBHead8 is always used. */ ``` | ||||
| Tags | No tags attached. | ||||
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Looks like we already support 64 bit blender files: >7 string =- saved as 64-bits >>8 string =v little endian >>9 byte x with version %c. >>10 byte x \b%c >>11 byte x \b%c >>0x44 string =GLOB \b. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2025-06-11 17:06 | mont29 | New Issue | |
| 2025-06-11 17:06 | mont29 | File Added: default_cube.blend | |
| 2025-07-23 18:49 | christos | Assigned To | => christos |
| 2025-07-23 18:49 | christos | Status | new => assigned |
| 2025-07-23 18:49 | christos | Status | assigned => feedback |
| 2025-07-23 18:50 | christos | Note Added: 0004273 |
