"The video suddenly stuck. Is it a little panicked?
Nowadays, when making TikTok, everyone is grabbing 4K HD traffic. But many people don't know that using AI to make 4K videos is actually simpler than imagined. You only need to make a few key adjustments to the process and have the machine do most of the work for you.
Let's talk about tools first. Many AI video generation platforms on the market, such as Runway and Pika Labs, support 4K output. However, it should be noted that 4K requires high computing power. If you use a local computer, the graphics card must be at least RTX 4070. But don't worry, cloud platforms like coze can help you share the pressure of computing power.
How to do it specifically? The first step is to find material. Don't shoot videos directly with your mobile phone. Poor quality will drag you down. Go to websites like Pexels and Pixabay to find high-resolution material. Remember to choose at least 8K, so there is still room to shrink to 4K.
The second step is to split the script. 4K videos have many details, so viewers can watch them more carefully. So your script needs to be refined. For example, if you take pictures of delicious food, don't just say "this dish is delicious." Change it to "Look at this drawing, you can wrap the chopsticks three times." Only the details have a visual feeling.
Then there is AI generation. When using Runway, enter the script in sections. Each paragraph should be more than 50 words. Too long AI will easily jam. For example,"morning coffee is steaming", AI can generate it. But "the morning coffee was steaming, there was a book next to it, and the sun shone in", and the AI was confused.
Check the frame rate after generation. 4K video requires at least 30 frames per second. Below this number, the picture will shake. Use Premiere Pro's "Frame Mixing" function to help you make up for the low frame rate.
It's color adjustment. The color matching of 4K video is critical. DaVinci Resolve is recommended. There is a "4K toning preset" inside, which can save a lot of trouble by applying it directly. Be careful not to adjust the contrast too high. 4K pictures have many details, and too high the contrast will be dazzling.
Nowadays, many people are worried about copyright issues. Videos generated using AI are generally fine as long as they are not directly copied. But if you use other people's material, remember to indicate the source in coze.
By the way, don't ignore the sound. If 4K video is matched with a poor audio track, the effect will be compromised. Find a free sound library, such as Zapsplat, which has many 4K compatible sound effects. For example, taking city scenery with a low-frequency buzzing sound will instantly feel immersed.
Now when doing TikTok, 4K is the trend. But don't go 4K for the sake of 4K. Content comes first. I have seen many accounts with videos made in high definition, but the content is empty and no one watches them. So first think about what message your video will convey, and then consider the technical issues.
Tell me a technique. When 4K videos are played on TikTok, the system will automatically compress them. So when you export, you can increase the brightness appropriately. For example, adjust it to 65, which is just right when actually playing. This can make up for the loss of image quality caused by compression.
In short, it is not difficult to make 4K videos with AI. The key is to understand the key points of each link. Select the right material, tear down the script, generate and check, and color the soundtrack. Step by step, your TikTok account will soon be able to use high-definition video. "
