in windows explorer the preview of file.blend is blurry, low resolution #120683

New Issue

Raul-7 · 2024-04-16T00:29:35+02:00

Raul-7 commented

2024-04-16 00:29:35 +02:00

System Information
Operating system: Windows-10-10.0.22621-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.34

Blender Version
Broken: version: 4.1.0, branch: blender-v4.1-release, commit date: 2024-03-25 20:42, hash: 40a5e739e270
Worked: (newest version of Blender that worked as expected)

Short description of error
[in windows explorer the preview of file.blend is blurry, low resolution]

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.22621-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.34 **Blender Version** Broken: version: 4.1.0, branch: blender-v4.1-release, commit date: 2024-03-25 20:42, hash: `40a5e739e270` Worked: (newest version of Blender that worked as expected) **Short description of error** [in windows explorer the preview of file.blend is blurry, low resolution] **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] [Based on the default startup or an attached .blend file (as simple as possible)]

Captura de pantalla 2024-04-15 182454.png

511 KiB

Raul-7 added the

labels 2024-04-16 00:29:35 +02:00

YimingWu commented

2024-04-16 04:09:30 +02:00

Hi @Raul-7 , this is because the thumbnail is just a small png stored inside the blend file, and it doesn't need to have a very high resolution for you to tell which file it is. So I believe this is not a bug. But maybe an extra option could be nice.

YimingWu added

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Platforms, Builds & Tests

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labels 2024-04-16 04:12:18 +02:00

Raul-7 commented

2024-04-16 22:42:56 +02:00

thanks, yes please, could you put it as something optional in obtions, near the preview type?

then I will be able to differentiate similar projects in a large preview, without having to open each one, Blender 2.xx had it by default, but I understand that for the view to load quickly a low resolution is better, but if they put it with a capture quality Windows, that's enough for me, it's like 300kb, thank you.

thanks, yes please, could you put it as something optional in obtions, near the preview type? then I will be able to differentiate similar projects in a large preview, without having to open each one, Blender 2.xx had it by default, but I understand that for the view to load quickly a low resolution is better, but if they put it with a capture quality Windows, that's enough for me, it's like 300kb, thank you.

Pratik Borhade commented

2024-04-17 08:59:26 +02:00

But maybe an extra option could be nice.

@Harley ^

> But maybe an extra option could be nice. @Harley ^

Harley Acheson commented

2024-04-17 17:16:24 +02:00

We just don't have any more resolution here...

The thumbnail that gets saved inside the blend file is an uncompressed array of 128x128 pixels. So if you just get a blend file from someone else and preview it in the OS that is all you have.

You can sometimes see Blender previews with slightly higher resolution. Our file browser saves a local cache of previews of various things, like of images, movies, fonts, and blend files. And these are 256x256 PNG files. But you will only see these slighter better versions for files that you have saved locally. The version that is inside the blend file remains at 128x128.

We don't have any plans to update that any time soon. But I can imagine doing so if we can combine that with other changes to the file format. Then we can possibly save it larger and compressed (jpeg maybe) and perhaps include other details about the contents that are helpful while previewing them.

Blender 2.xx had it by default

Blender had exactly what by default?

We just don't have any more resolution here... The thumbnail that gets saved inside the blend file is an _uncompressed_ array of 128x128 pixels. So if you just get a blend file from someone else and preview it in the OS that is all you have. You can sometimes see Blender previews with slightly higher resolution. Our file browser saves a local cache of previews of various things, like of images, movies, fonts, and blend files. And these are 256x256 PNG files. But you will only see these slighter better versions for files that you have saved locally. The version that is inside the blend file remains at 128x128. We don't have any plans to update that any time soon. But I can imagine doing so if we can combine that with other changes to the file format. Then we can possibly save it larger and compressed (jpeg maybe) and perhaps include other details about the contents that are helpful while previewing them. > Blender 2.xx had it by default Blender had exactly what by default?

YimingWu commented

2024-04-18 05:43:54 +02:00

Humm I'm not that familiar with how windows makes thumbnail but doesn't it also do high res image previews on image files? Could we use some of that technique to do blend file preview?

Harley Acheson commented

2024-04-18 18:53:45 +02:00

@ChengduLittleA - doesn't it also do high res image previews on image files?

Yes, on Windows there are various "handlers" for each type of media, many built in but we can also add our own. For images the applicable handler just reads in the image and make a small version.

Technically, we could do similar. Our handler could open up Blender and render the scene to a file and then use that as the basis for the preview. That would work for any size of thumbnail but it would take far too long. While hovering over a blend file in Windows Explorer we don't want to wait several seconds for each one to render.

Instead our handler barely even opens the blend file, just seeks to the image already saved there and uses that. Which is obviously fast, but gives us the limitation that our thumbnails are only 128x128.

@ChengduLittleA - doesn't it also do high res image previews on image files? Yes, on Windows there are various "handlers" for each type of media, many built in but we can also add our own. For images the applicable handler just reads in the image and make a small version. Technically, we could do similar. Our handler could open up Blender and render the scene to a file and then use that as the basis for the preview. That would work for any size of thumbnail but it would take far too long. While hovering over a blend file in Windows Explorer we don't want to wait several seconds for each one to render. Instead our handler barely even opens the blend file, just seeks to the image already saved there and uses that. Which is obviously fast, but gives us the limitation that our thumbnails are only 128x128.

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in windows explorer the preview of file.blend is blurry, low resolution #120683