zai-org
CogVideoX-5b-I2V
This model requires you to accept the cogvideox-license license terms before download.
Description
Image-to-video diffusion transformer, 5B parameters, 720x480 clips.
Tags
At a glance
| Kind | video generation model |
|---|---|
| Precision | bfloat16 |
| Container size | 21.0 GiB |
| Weights inside | 21.0 GiB |
| Components | 3 |
| Licence | cogvideox-license |
| Origin | THUDM/CogVideoX-5b-I2V @ a6f0f4858a83 |
What is inside the container
A .nbx container packs every part of CogVideoX-5b-I2V — 3 components with weights, graphs and runtime settings — so one file is all the runtime needs.
| Component | Blocks | Layers | Weights |
|---|---|---|---|
| transformer | 42 | 42 | 10.5 GiB |
| vae | 4 | — | 822 MiB |
| text_encoder | 24 | 24 | 8.9 GiB |
Default settings
The values the container ships with. They apply when you do not pass your own.
- Frames
- 49
- Frames per second
- 8
- Inference steps
- 50
- Guidance scale
- 6
Memory needed
The weights of CogVideoX-5b-I2V take 21.0 GiB in bfloat16. That is the floor for the memory the runtime has to place, spread over the devices it finds; activations come on top and grow with the size and length you ask for. A measured peak per device class is not published for this model yet.
Verify what you downloaded
Every download carries its SHA-256, and the file endpoint sends it in the X-NBX-SHA256 header. The container is 21.0 GiB (22,600,790,017 bytes).
$ sha256sum CogVideoX-5b-I2V.nbx
1f9f3757864af5b65779d8a35dae73bca0a972e0455369f92d11b20315b1140e
Questions
What is CogVideoX-5b-I2V?
A video generation model by zai-org, distributed as a bfloat16 .nbx container and licensed cogvideox-license.
How big is the download?
21.0 GiB, of which 21.0 GiB are weights.
How do I run it?
Install the runtime from the download page, then use the commands under “CLI Usage” below: neurobrix import zai-org/CogVideoX-5b-I2V, then neurobrix serve --model CogVideoX-5b-I2V.
CLI Usage
$ neurobrix import zai-org/CogVideoX-5b-I2V
$ neurobrix serve --model CogVideoX-5b-I2V
$ neurobrix run --prompt "your prompt here"
$ neurobrix stop