| 1 | --- |
| 2 | name: generating-videos |
| 3 | description: Generates videos using Grok. Supports text-to-video and image-to-video. AI视频生成、文生视频、图生视频。 |
| 4 | --- |
| 5 | |
| 6 | # Video Generation |
| 7 | |
| 8 | Generates videos using **Grok**. |
| 9 | |
| 10 | ## Model Selection Strategy |
| 11 | |
| 12 | Use `grok-imagine-video` for video generation. |
| 13 | |
| 14 | | Scenario | Use Model | Reason | |
| 15 | |----------|-----------|--------| |
| 16 | | Video 1-15s | `grok-imagine-video` | Grok supports direct 1-15s generation | |
| 17 | | Text-to-video | `grok-imagine-video` | Prompt-only generation | |
| 18 | | Image-to-video | `grok-imagine-video` | Uses one reference image | |
| 19 | | Video >15s | Generate multiple clips, then load `editing-videos` to concatenate | Grok max duration is 15s | |
| 20 | |
| 21 | ## Language Rule |
| 22 | |
| 23 | Video prompts MUST follow the user's language. If the user writes in Chinese, generate Chinese prompts; if in English, generate English prompts. If the user explicitly requests a specific language, use that language. |
| 24 | |
| 25 | ## Grok Video Model |
| 26 | |
| 27 | | Model | Speed | Quality | Max Duration | Use Case | |
| 28 | |-------|-------|---------|--------------|----------| |
| 29 | | `grok-imagine-video` | Fast | Good | 15s | Default video generation | |
| 30 | |
| 31 | ## Parameters |
| 32 | |
| 33 | | Parameter | Values | Default | Description | |
| 34 | |-----------|--------|---------|-------------| |
| 35 | | `duration` | 1-15 | model default | Video duration in seconds | |
| 36 | | `resolution` | `480p`, `720p` | `720p` | Video resolution | |
| 37 | | `aspectRatio` | `1:1`, `16:9`, `9:16`, `4:3`, `3:4`, `3:2`, `2:3` | `9:16` | Video aspect ratio | |
| 38 | | `imageUrl` | URL | none | Reference image URL for image-to-video | |
| 39 | |
| 40 | ## Workflow |
| 41 | |
| 42 | 1. Call `generateVideoWithGrok` with prompt and optional parameters. |
| 43 | 2. Poll `getGrokVideoStatus` every 30 seconds. |
| 44 | 3. Maximum wait: 5 minutes. |
| 45 | 4. Save completed output to draft unless the user explicitly asks for media library only. |
| 46 | |
| 47 | ## Prompt Structure |
| 48 | |
| 49 | `[Subject & Background] + [Action] + [Style] + [Camera] + [Atmosphere] + [Audio]` |
| 50 | |
| 51 | ### Subject & Background |
| 52 | |
| 53 | Specify the main focus and environmental context. |
| 54 | |
| 55 | Examples: |
| 56 | - "A young woman with long black hair wearing a red dress" |
| 57 | - "White concrete apartment building with organic shapes and lush greenery" |
| 58 | |
| 59 | ### Action |
| 60 | |
| 61 | Describe what the subject is doing. |
| 62 | |
| 63 | Examples: |
| 64 | - "walks slowly towards the camera" |
| 65 | - "transforms from liquid to solid" |
| 66 | |
| 67 | ### Style |
| 68 | |
| 69 | Add aesthetic direction. |
| 70 | |
| 71 | Examples: |
| 72 | - Film noir |
| 73 | - Surrealism |
| 74 | - Cyberpunk |
| 75 | - 3D cartoon animation |
| 76 | - Cinematic documentary |
| 77 | |
| 78 | ### Camera |
| 79 | |
| 80 | Describe movement and framing. |
| 81 | |
| 82 | Examples: |
| 83 | - "slow dolly-in" |
| 84 | - "handheld tracking shot" |
| 85 | - "close-up with shallow depth of field" |
| 86 | |
| 87 | ### Atmosphere |
| 88 | |
| 89 | Describe lighting, color, mood, and setting. |
| 90 | |
| 91 | Examples: |
| 92 | - "warm sunset lighting" |
| 93 | - "misty morning atmosphere" |
| 94 | - "high contrast studio lighting" |
| 95 | |
| 96 | ### Audio |
| 97 | |
| 98 | Include useful audio cues when relevant. |
| 99 | |
| 100 | Examples: |
| 101 | - "soft ambient city sounds" |
| 102 | - "gentle piano music" |
| 103 | - "footsteps on wet pavement" |
| 104 | |
| 105 | ## Aspect Ratio Guidance |
| 106 | |
| 107 | | Platform / Use | Aspect Ratio | |
| 108 | |----------------|--------------| |
| 109 | | TikTok, Reels, Shorts, mobile social video | `9:16` | |
| 110 | | YouTube landscape, website hero, presentation | `16:9` | |
| 111 | | Profile or square feed asset | `1:1` | |
| 112 | | Portrait-style content | `3:4` or `2:3` | |
| 113 | | Landscape social feed | `4:3` or `3:2` | |
| 114 | |
| 115 | ## Long Video Strategy |
| 116 | |
| 117 | For videos longer than 15 seconds: |
| 118 | |
| 119 | 1. Split the video into independent 15-second-or-shorter segments. |
| 120 | 2. Generate each segment with `generateVideoWithGrok`. |
| 121 | 3. Poll every task until complete. |
| 122 | 4. Load `editing-videos`. |
| 123 | 5. Use the video editing tool to concatenate the completed segments. |
| 124 | |
| 125 | Keep prompts visually consistent across segments by repeating subject, style, lighting, camera language, and environment details. |
| 126 |