HeyGen 完整使用教學:不用露臉、不用攝影棚,打字就生出一支真人感影片

A friend who exports products has been struggling lately: he wants to make a product introduction video for his overseas customers, but he lacks confidence in his English speaking skills and doesn't like being on camera. He was quoted a few thousand dollars for translation and dubbing. I suggested he try HeyGen. Three days later, he sent me a video - in it, a professional host introduced his product in fluent English, with perfectly synced lip movements. He asked me, "Is this really not a real person?"

This is what HeyGen does: it enables people without equipment, who don't like being on camera, or who need to communicate in different languages, to produce videos with a realistic human touch.

What is HeyGen

HeyGen is an AI video generation platform, with a core feature of "virtual hosts" (AI avatars). You write a script, choose an AI character, and it generates a video of that character "reading your script", complete with expressions, lip movements, and sound, without the need for cameras, studios, or lighting. It also has a signature feature of video translation - it can translate a video into over 100 languages and adjust the lip movements to match the new language's pronunciation.

It offers a free plan for trial use (with a watermark and time limit), and advanced features and commercial use require a paid subscription.

What can HeyGen do

According to HeyGen's official description, in 2026, it can mainly do the following:

• Script-to-Video: paste a script, choose a host, and directly output a video.
• Video Agent: describe what you want in plain language, and let AI help you create the video.
• Video Translation and Dubbing: translate an existing video into over 175 languages and sync the lip movements, making it very practical for cross-national content.
• Custom Host: create a personalized AI avatar using your own photos or videos.
• Photo/Sound-to-Video: upload a static image or a sound clip, and let it come to life as a talking person.
• Interactive Host (Interactive Avatar): a virtual person that can have real-time conversations, used for customer service, interactive displays, etc.

How to use: basic steps

• Step 1, register and choose a plan. Log in with Email or Google, and try the free plan first.
• Step 2, choose a host and scene. Select from hundreds of existing AI hosts, or create your own avatar later.
• Step 3, input the script. Type in what you want to say, choose the language and voice. The more conversational the script, the shorter the sentences, the more natural the output.
• Step 4, adjust the details. Add subtitles, background music, brand logos, and arrange the layout.
• Step 5, generate and export. Click generate, wait for it to finish, and then download. Only paid plans can remove watermarks, output high-quality videos, and use them commercially.

Advanced tips

A few tips to make the video more realistic: write the script in a spoken tone, not a written tone - change the written language to spoken language, so the host's reading is more natural; break up long sentences, as they can be awkward to read and pause; when making multilingual versions, always have someone who understands the language review the translation, as AI translations can sometimes be unusual; grab the audience's attention with the first sentence, as the first three seconds determine whether the audience stays or leaves. To find script inspiration, you can use ChatGPT to generate a draft and then put it into HeyGen.

Precautions

Three reminders. First, portraits and voices must be legal - creating someone else's avatar, using someone else's face or voice, must be done with their consent, as this involves portrait rights and personal data in Taiwan. Second, disclose AI generation - when used in commercial or public settings, it's better to honestly indicate that it's an AI-generated video to avoid controversy. Third, don't expect it to make narrative blockbusters - it's best at "one person talking to the camera" type of content, and for complex camera movements, plots, and other professional video tools, you still need to use specialized software.

TheAI Academy Review

HeyGen has changed the process of "making a video with someone talking" from "needing equipment, editing skills, and being comfortable on camera" to "just needing to type". For exporters, educators, and knowledge-based creators, the disappearance of this threshold is very meaningful.

Review: it's not meant to replace the warmth of real people on camera, but to fill in the gaps where "you need a video, but the conditions don't allow it". Using it in the right format - product explanations, teaching, multilingual versions - has high CP value.

Suggestion for Taiwanese readers: try using it to make a video that you would have otherwise outsourced, and feel the time and cost savings; those in cross-national business should especially try video translation, as one piece of content can be used in multiple languages. For further reading, see AI Virtual Host Video Production Guide.

Sources

• HeyGen Official Product Updates

(This article is compiled based on publicly available information, and the features and language support are subject to the latest version of HeyGen.)