6 Best FREE AI Video Upscalers in 2026: 4K Results for $0

[00:00] Most so-called free AI upscalers aren't

[00:03] actually free. So, I spent 20 hours

[00:05] digging through the internet to find the

[00:07] six tools that truly work for free. No

[00:09] watermarks, no hidden subscriptions. In

[00:11] this video, I'll show you exactly how to

[00:13] access them and how to use them. And at

[00:14] the end, I'll share two bonus tricks

[00:17] most people don't know. So, the first

[00:19] one is free.upscaler.video

[00:21] and it uses web GPU technologies to

[00:23] access your computer's graphic card. And

[00:25] it utilizes well-known AI upscaling

[00:27] algorithms, specifically anime 4K and

[00:30] real ESR gun for realistic photos and

[00:33] videos. So here is the tool very simple

[00:35] environment. There is no need to sign up

[00:37] or anything. Just choose a video. So I

[00:40] will use this very low resolution video

[00:42] as the low quality. And already you can

[00:45] see what will be the difference. You see

[00:47] on the left side is the previous one and

[00:50] on the right side will be increased

[00:52] resolution. You see the sharpness and

[00:55] the clearness of the video here. It will

[00:57] upscale every video two times. So when I

[01:00] click start upscaling, you'll see

[01:02] something in the performance tab of my

[01:04] computer. You see the GPU. So this is my

[01:06] laptop and it obviously started using

[01:08] GPU. Now we see that fine. And now it is

[01:12] over most likely. Let's see. Here is the

[01:14] final video. We can download it easily.

[01:17] The next one is from unblur.ai and video

[01:20] enhancer. And here you can use longer

[01:21] videos up to 500 megabytes. It uses

[01:24] neural networks to analyze the pixels,

[01:26] then looks for patterns or noise or blur

[01:28] and mathematically guesses what a sharp

[01:30] version would look like. So we can

[01:32] upload the file and it will be enhanced

[01:33] to 2K resolution. Let's use this one

[01:36] here again and you see it is generating.

[01:38] Look at the left one, the original video

[01:40] 480 360. And here we have 2K. You

[01:45] already notice the quality of the right.

[01:48] Let's look at the first one. Okay, very

[01:50] low quality. And then the right one

[01:53] enhanced upscaled. Looks pretty good.

[01:56] Pretty sharp video from the ultra low

[01:59] quality video that we created. Now

[02:01] download for free. And as you noticed, I

[02:04] didn't even sign up or sign in. I don't

[02:06] know the [clears throat] limits, but I

[02:07] generated many different videos and

[02:10] everything is still [music] working.

[02:13] Yes.

[02:15] Then we have the third tool,

[02:17] upscaler.ai, AI video upscaler and it is

[02:19] particularly aggressive by removing the

[02:21] ESO noise. So you know that grainy look

[02:23] you get in videos filmed in the dark.

[02:25] You can upload the videos up to 30

[02:27] seconds and less than 50 megabytes. So

[02:29] let's do that. This time let's upload

[02:31] this video. So it is generating the

[02:33] scaled version of this video. So here is

[02:35] our video. On the left side you see the

[02:37] low resolution version and here the

[02:40] higher resolution. You see the sharpness

[02:42] and how everything is much more quality

[02:45] on the right side. So if you play

[02:49] nice really good upscaler completely for

[02:53] free just download it and here is our

[02:55] new resolution pretty good then we have

[02:58] X design enhance video for free just

[03:00] upload a video let's use this one and

[03:02] then you have three options 1x 2K or 4K

[03:06] let's use 4K no 2K for example enhance

[03:10] so very quickly here is our enhanced 2K

[03:13] video the thing about this tool is that

[03:15] you can download 5second preview but you

[03:18] can't download the full video but this

[03:20] is very valuable for many short videos

[03:22] or AI generated videos because many of

[03:24] them are 5 seconds or 8 seconds and then

[03:26] you can do multiple times the same thing

[03:29] as you can see completely for free

[03:30] without even signing in. You see the

[03:32] other videos that I did on the left hand

[03:34] side very low SD resolution and here we

[03:37] have 2K that looks actually pretty

[03:39] pretty good. Oh yeah,

[03:43] she is smiling constantly and doing some

[03:45] weird faces, but that's okay. Then we

[03:47] have the tool subtitlevideo.com video

[03:49] enhance and this site uses a deep

[03:51] learning video super resolution

[03:53] algorithm and up to four times scaling.

[03:55] So the tool works like follows. First

[03:57] you need to enter your email address

[04:00] here. Then confirm once you receive the

[04:02] email and after that you will be able to

[04:05] generate videos. So I will enter my

[04:07] address now and I will choose the file.

[04:09] So you have three options. default face

[04:11] enhancer or faster medium resolution. I

[04:14] will use default and it will upscale

[04:16] video four times. After a couple of

[04:18] minutes, I received video in my email.

[04:20] Then just click on the link and you can

[04:22] see that video is upscaled four times.

[04:24] Additionally, we have Vid Mage AI video

[04:26] upscaler and there's a trick about this

[04:28] one. So daily you will receive 20

[04:31] seconds of video upscaling and

[04:33] enhancing. But the trick is that you can

[04:35] then go to the tool in another browser

[04:38] or join from the VPN and then you'll

[04:40] receive additional 20 seconds which I

[04:42] will show just now. So for example,

[04:45] let's upload the video. The same one

[04:46] let's use four times upscaling. Let's

[04:50] start upscaling.

[04:52] So here is the video. Now you see that I

[04:54] spent all of the credits. I don't have

[04:56] anymore. Now I wouldn't need to sign up.

[04:58] Video quality is pretty good. Yes. And

[05:01] now for the trick, of course. Now I open

[05:03] the same tool in the edge browser and as

[05:06] you can see I have 20 seconds remaining.

[05:09] So you can do that many many times a day

[05:11] and at the end as I mentioned I will

[05:12] reveal two interesting tricks. So unlike

[05:15] the previous tools those two do not use

[05:17] generative AI to hallucinate new pixels.

[05:20] It uses basically traditional matt based

[05:22] filters. So if you use a scale filter

[05:24] here it will make the video bigger and

[05:25] many different things. Completely free.

[05:28] It uses FFmpec technology and it runs in

[05:31] your browser based on your CPU. So for

[05:33] example, here we have one video and here

[05:35] you have many different things for this

[05:38] specific video that you can just add

[05:40] here. So for example, scale addit. It's

[05:43] like this drag and drop map. Here we can

[05:46] increase the video size and the

[05:47] resolution. And we have many different

[05:49] other things. Color, chroma key. Okay.

[05:54] Similarity blend

[05:56] color contrast.

[05:58] You can do whatever you want with this

[06:00] tool and it is completely free. After

[06:03] you're done with your many different

[06:05] settings, just render preview. It is

[06:07] rendering. It is now using my CPU to do

[06:09] that. And here is our new video.

[06:12] >> It's Pepe has become kind of a simple

[06:15] [laughter]

[06:17] >> nice one. After that, just click

[06:19] download. Then the second tool is based

[06:21] on the same technology. So FFmpeg

[06:24] online. Upload your file. Here it is.

[06:26] and then set different options. Here you

[06:29] configure options by setting commands

[06:30] which there are hundreds of. So for

[06:32] example, if you would like to make the

[06:34] color pop and increase the resolution of

[06:36] the video and then put them side by

[06:37] side, this is the command. It's a pretty

[06:40] complicated one. As you can see, many

[06:42] different things using the lens

[06:44] algorithm and the scaling and changing

[06:46] the saturations and everything. Fine.

[06:49] Then just click run. Now it uses my CPU

[06:52] to process all of that. As you can see,

[06:54] the CPU is going to 100% almost. So,

[06:57] video has been created. Let's download

[06:59] the file. So, you notice it created two

[07:01] different versions. So, this is the

[07:02] previous one and this is the second one

[07:04] where we made the colors different and

[07:06] perhaps more pop. All of that created

[07:08] with FFmpeg command.

[07:11] Pretty good actually. For example, if

[07:12] you go to this frame, you can see that

[07:14] colors in this video are much more

[07:16] pronounced. Now, you could play with

[07:18] that and enter hundreds of different

[07:20] commands to enhance your video. Just ask

[07:23] jp or gemini how to use ffmpec options

[07:27] and it will split out whatever you need.

[07:29] For example, you say I would like to

[07:31] saturate this video and make it bigger

[07:33] resolution or anything else and it's a

[07:34] split out command that you can just

[07:36] paste here and run it. Pretty good. So

[07:38] yeah, pretty useful tools that you can

[07:40] use on dayto-day basis. I hope you found

[07:43] this useful and if you did, please do

[07:45] like and subscribe and we'll talk some

[07:47] next time. Bye-bye.