To make an AI video with a good balance of price and quality, decide a few things upfront: the length, whether it is a one-off or a repeatable process, the model, the visual style and your budget. That makes it less likely you will hit a wall and abandon the project halfway through
Start with the length and purpose
Write down where the video will appear, who it is for and what the viewer should take away. Then choose the length and frame format. A vertical social feed and a website may need different compositions, even when they tell the same story
Length affects the cost: many generation tools charge by the second or minute. Budget for test versions, unusable shots and retries as well as the final video. Check what the plan includes: generation, voice, avatars and downloads may be billed differently
One video or an ongoing workflow
For a one-off job, a ready-made platform may be enough: upload your materials, assemble the scenes and download the result. If you need videos regularly, decide in advance who prepares the scripts, how source materials enter the workflow and who checks each video before publication
An API lets your own software connect to a service. It can help integrate video generation into an existing process. Automation will not fix a weak script or remove the need to review the result. Make one working video first, then see which steps actually repeat
In my automatic subtitles project, a finished subtitled video takes about 2 minutes instead of half an hour of manual work. I built that assistant in 1 day. This is an example of automating the processing of an existing video, not a measurement of video generation speed

Model, style and budget
Realistic footage, animation and cartoons call for different results. Before choosing a model, collect visual references: what the character should look like, and how much camera movement, setting and resemblance to a real person matter. Then test suitable models on the same short scene with the same brief. Compare your own results and the cost of a usable version, including retries, rather than judging by a promotional image
Set a total spending limit and decide how much you can use for tests. A cheap individual run does not guarantee a cheap finished video: the total rises if it takes many attempts to get an acceptable result. Check subscription terms, rights to your source material and whether the output can be used commercially
Video with an AI avatar
My clients most often ask for social videos with an AI avatar based on a real person: a copy of their appearance and voice. For this task, Avatar V is currently my preferred option. In my experience, a single 60-second video costs $2-2.5 to make; the expense depends on the workflow and service terms
HeyGen's Avatar V creates a digital likeness from a recording and lets you use it in different scenes. Judge the likeness using your own material: watch the face, gestures and lip sync, and listen to the voice and pronunciation of names. Get the person's consent before creating their avatar or copying their voice

What to check before release
Start with the script: is the message clear without extra explanation, and are the names and facts correct? Break the text into scenes and decide which shots really need to be generated. For an initial test, choose a section that lets you assess the face, movement and sound
In the finished video, check transitions, hands and other visual details, the audio and whether the lips match the speech. Watch it on a phone and with the sound off: text and captions should be readable, and important elements should not sit underneath platform controls. Check voice levels against the music and make sure important text is not cut off at the edges. After making changes, watch the actual final file again
If you need help choosing a model and setting up the process, see the AI video service