Jasna restores mosaics in videos and images. It is free, has a simple app and a command line, and runs on your GPU.

• Finds mosaics in a video and restores them. The rest of the picture is not touched.
• Two restoration models: fast BasicVSR++ (free) and slow but more detailed LTX (for supporters, NVIDIA or supported AMD GPUs; Windows AMD LTX is in beta).
• Restores only the parts you choose, with a preview, in the Segment Editor.
• Works with VR180 videos and still images (SD 1.5, for supporters).
• Lets you watch a video restored live in the Video Player, without making a file.

• NVIDIA GTX 16-series / RTX 20-series or newer, with a recent driver (610+ on Windows, 580+ on Linux). GTX 10-series and older don’t work.
• Or AMD Radeon RX 7000/9000 (experimental).
• A folder on a local disk, with no Chinese, Japanese, accented or other non-English characters in its path.

1. Download the release for your system and GPU.
2. Unpack it into a folder with no Chinese, Japanese, accented or other non-English characters in the path.
3. Start the app:

   • Windows: double-click jasna.exe.

   • Linux NVIDIA: run the jasna file.

   • Linux AMD: first install AMD’s AMF video runtime once. We tested AMF 26.20:

     curl -fLO https://repo.radeon.com/amf/26.20/amf_installer_26.20.zip
     unzip amf_installer_26.20.zip
     sudo bash amf_installer_26.20.sh

     Accept AMD’s license when prompted, then run run_jasna_amd.sh. If using Distrobox, install AMF inside the same container as Jasna.

4. Add a video, choose settings and click the ▶ button at the bottom.

Your first job is slow. On NVIDIA, Jasna first prepares the models for your exact GPU. This takes about 15–60 minutes, only once. Close other apps and don’t use the PC during this time. When you update Jasna, copy the model_weights folder to the new version, so you don’t wait again.

LTX update in 0.12: models copied from 0.11.3 need downloading again, including on NVIDIA. Press ▶ and accept the model update. Your existing License code and shared VAE files still work. For manual model downloads, use branch 0.12.0 for Jasna 0.12, or main for 0.11.3 and older.

Every setting has a tooltip: move the mouse over the ⓘ icon. Out of GPU memory (VRAM)? Lower Max Clip Size, for example from 90 to 60. See Tuning.

AMD

LTX works on all Radeon RX 7000 and RX 9000 cards (7600-7900, 9060, 9070), PRO W7000 and AI PRO R9700. Newer Radeon iGPUs (780M, 890M, Ryzen AI Max) should work too, but I didn’t test them. AMD GPU table

• LTX works on AMD
• BasicVSR++ is about 2.7x faster (R9700, 1080p video: 35 → 95 fps) and uses about half the CPU
• RX 7900 XTX gets another ~24% on top of that
• UNet 4x works on AMD
• faster AV1 and 10-bit HEVC videos, better default quality for H.264 and AV1 output

Consider it still experimental since I’m new to AMD development. Report bugs as normal.

Faster LTX

• new Basic Quality model, around 1.3x faster than Standard and a bit softer. CLI: ltx-basic
• step 2 and step 4 are much faster on Basic and Standard, quality looks very close to me. Good/High/Top got faster too.

Per window, RTX 5090:

	Step 2	Step 4
0.11.3	0.36 s	0.73 s
0.12.1 Basic/Standard	0.20 s (-44%)	0.21 s (-71%)
0.12.1 Good/High/Top	0.37 s (same)	0.53 s (-27%)

Whole job, 45 s 1080p video, Standard model, RTX 5090:

• 0.11.3: 100.6 s → 0.12.1: 79.0 s (-21%)
• with Sharper large mosaics: 185.5 s → 134.2 s (-28%)

RTX 20xx: LTX is about 2x faster and uses about 5 GB less VRAM (2080 Ti, 20 s video: 364 s → 181 s).
Improvements to mosaic detection postprocessing will also reduce the work LTX has to do

 

 

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