# Kling LipSync Text-to-Video > Kling LipSync is a text-to-video model that generates realistic lip movements from text input. ## Overview - **Endpoint**: `https://fal.run/fal-ai/kling-video/lipsync/text-to-video` - **Model ID**: `fal-ai/kling-video/lipsync/text-to-video` - **Category**: text-to-video - **Kind**: inference **Tags**: text to video, lipsync ## Pricing Your request will be priced **$0.014** per input **video seconds**, rolling up to closest **5 second increment**. For example, if your video's duration is 3 seconds, it will be billed as a 5 second video For more details, see [fal.ai pricing](https://fal.ai/pricing). ## API Information This model can be used via our HTTP API or more conveniently via our client libraries. See the input and output schema below, as well as the usage examples. ### Input Schema The API accepts the following input parameters: - **`video_url`** (`string`, _required_): The URL of the video to generate the lip sync for. Supports .mp4/.mov, ≤100MB, 2-60s, 720p/1080p only, width/height 720–1920px. If validation fails, an error is returned. - Examples: "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4" - **`text`** (`string`, _required_): Text content for lip-sync video generation. Max 120 characters. - Examples: "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions." - **`voice_id`** (`VoiceIdEnum`, _required_): Voice ID to use for speech synthesis - Options: `"genshin_vindi2"`, `"zhinen_xuesheng"`, `"AOT"`, `"ai_shatang"`, `"genshin_klee2"`, `"genshin_kirara"`, `"ai_kaiya"`, `"oversea_male1"`, `"ai_chenjiahao_712"`, `"girlfriend_4_speech02"`, `"chat1_female_new-3"`, `"chat_0407_5-1"`, `"cartoon-boy-07"`, `"uk_boy1"`, `"cartoon-girl-01"`, `"PeppaPig_platform"`, `"ai_huangzhong_712"`, `"ai_huangyaoshi_712"`, `"ai_laoguowang_712"`, `"chengshu_jiejie"`, `"you_pingjing"`, `"calm_story1"`, `"uk_man2"`, `"laopopo_speech02"`, `"heainainai_speech02"`, `"reader_en_m-v1"`, `"commercial_lady_en_f-v1"`, `"tiyuxi_xuedi"`, `"tiexin_nanyou"`, `"girlfriend_1_speech02"`, `"girlfriend_2_speech02"`, `"zhuxi_speech02"`, `"uk_oldman3"`, `"dongbeilaotie_speech02"`, `"chongqingxiaohuo_speech02"`, `"chuanmeizi_speech02"`, `"chaoshandashu_speech02"`, `"ai_taiwan_man2_speech02"`, `"xianzhanggui_speech02"`, `"tianjinjiejie_speech02"`, `"diyinnansang_DB_CN_M_04-v2"`, `"yizhipiannan-v1"`, `"guanxiaofang-v2"`, `"tianmeixuemei-v1"`, `"daopianyansang-v1"`, `"mengwa-v1"` - Examples: "genshin_klee2" - **`voice_language`** (`VoiceLanguageEnum`, _optional_): The voice language corresponding to the Voice ID Default value: `"en"` - Default: `"en"` - Options: `"zh"`, `"en"` - **`voice_speed`** (`float`, _optional_): Speech rate for Text to Video generation Default value: `1` - Default: `1` - Range: `0.8` to `2` **Required Parameters Example**: ```json { "video_url": "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4", "text": "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions.", "voice_id": "genshin_klee2" } ``` **Full Example**: ```json { "video_url": "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4", "text": "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions.", "voice_id": "genshin_klee2", "voice_language": "en", "voice_speed": 1 } ``` ### Output Schema The API returns the following output format: - **`video`** (`File`, _required_): The generated video - Examples: {"url":"https://storage.googleapis.com/falserverless/kling/kling_text_lipsync.mp4"} **Example Response**: ```json { "video": { "url": "https://storage.googleapis.com/falserverless/kling/kling_text_lipsync.mp4" } } ``` ## Usage Examples ### cURL ```bash curl --request POST \ --url https://fal.run/fal-ai/kling-video/lipsync/text-to-video \ --header "Authorization: Key $FAL_KEY" \ --header "Content-Type: application/json" \ --data '{ "video_url": "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4", "text": "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions.", "voice_id": "genshin_klee2" }' ``` ### Python Ensure you have the Python client installed: ```bash pip install fal-client ``` Then use the API client to make requests: ```python import fal_client def on_queue_update(update): if isinstance(update, fal_client.InProgress): for log in update.logs: print(log["message"]) result = fal_client.subscribe( "fal-ai/kling-video/lipsync/text-to-video", arguments={ "video_url": "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4", "text": "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions.", "voice_id": "genshin_klee2" }, with_logs=True, on_queue_update=on_queue_update, ) print(result) ``` ### JavaScript Ensure you have the JavaScript client installed: ```bash npm install --save @fal-ai/client ``` Then use the API client to make requests: ```javascript import { fal } from "@fal-ai/client"; const result = await fal.subscribe("fal-ai/kling-video/lipsync/text-to-video", { input: { video_url: "https://fal.media/files/koala/8teUPbRRMtAUTORDvqy0l.mp4", text: "Mental health is as important as physical health, shaping our emotions, thoughts, and daily interactions.", voice_id: "genshin_klee2" }, logs: true, onQueueUpdate: (update) => { if (update.status === "IN_PROGRESS") { update.logs.map((log) => log.message).forEach(console.log); } }, }); console.log(result.data); console.log(result.requestId); ``` ## Additional Resources ### Documentation - [Model Playground](https://fal.ai/models/fal-ai/kling-video/lipsync/text-to-video) - [API Documentation](https://fal.ai/models/fal-ai/kling-video/lipsync/text-to-video/api) - [OpenAPI Schema](https://fal.ai/api/openapi/queue/openapi.json?endpoint_id=fal-ai/kling-video/lipsync/text-to-video) ### fal.ai Platform - [Platform Documentation](https://docs.fal.ai) - [Python Client](https://docs.fal.ai/clients/python) - [JavaScript Client](https://docs.fal.ai/clients/javascript)