Upscale & Enhance Your Videos After Trimming
AI upscaling (also called super-resolution) is the process of increasing a video’s resolution with a neural network that reconstructs detail, instead of simply stretching the pixels. Tools like Topaz Video AI can turn an old 480p or 720p clip into a sharper 1080p or 4K file, reduce noise, and even generate extra frames for smoother motion. It works best when paired with a clean cut: trim your footage first in Avidemux, then let the AI spend its time only on the frames you actually keep.
The workflow: cut first, enhance second
Step 1 — Trim losslessly in Avidemux
Open your video in Avidemux, set the A and B markers around the segment you want, and cut in copy mode. Because lossless cutting avoids re-encoding, your source footage keeps its full original quality — the best possible input for upscaling. Remove intros, mistakes, and dead air before anything else.
Step 2 — Upscale with Topaz Video AI
Load the trimmed clip into Topaz Video AI. Choose an enhancement model based on your source: a standard upscaling model for resolution, a denoising model for grainy footage, or frame interpolation for choppy motion. Preview a short section first — a 10-second preview tells you more than any marketing claim.
Step 3 — Export and re-encode
Export the enhanced result (typically ProRes or a high-bitrate H.264/H.265 intermediate), then use Avidemux again to re-encode it to a shareable format such as MP4 with H.265 (HEVC), which keeps quality high while limiting the file size.
Honest caveats before you start
- Re-encoding is required. Upscaling always means a full re-encode — there is no lossless shortcut here.
- It takes time. AI enhancement is GPU-heavy; a few minutes of 4K footage can take hours on modest hardware.
- Results depend on the source. Mildly soft or noisy footage improves noticeably. Heavily compressed, blocky video cannot be magically rebuilt — no tool turns a blurry thumbnail into true 4K detail.
- File sizes grow. Higher resolution means larger files; plan your storage and encoding settings accordingly.
Ready to enhance your footage?
Topaz Video AI is paid software; pricing is shown on the official site. A free alternative for basic cleanup is Avidemux’s built-in filters (sharpening, denoise) — far less powerful than AI upscaling, but free and instant.
Frequently asked questions
Is Topaz Video AI free?
No. Topaz Video AI is paid software, and pricing is shown on the official site. A trial is available so you can test it on your own footage before buying.
How much bigger will the upscaled file be?
It depends on the target resolution, codec, and bitrate. A 4K H.264 file can be several times larger than the 720p original. Encoding to H.265 (HEVC) in Avidemux after upscaling keeps quality high while holding the file size down.
Can it fix old phone videos?
Sometimes, partially. Denoising and upscaling models handle mild noise and softness well. But heavy compression artifacts, motion blur, and very low bitrates set a hard limit — expect a clearly better-looking video, not a modern-camera look.