After save as operation with non-default options of Image, simple save operation does not use previous settings, but default settings again. #95721

New Issue

Doug Cox · 2022-02-12T04:29:59+01:00

Doug Cox commented

2022-02-12 04:29:59 +01:00

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 497.29

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557

Description

When re-saving a modified imaged (from Texture Painting for example), the newly saved file appears to lose all settings used during the original "Save As" operation. For file types such as OpenEXR that were saved as 16-bit using Zip compression, this can result in a file that was roughly 800KB becoming 64MB in size. This wastes quite a large amount of disk space and bandwidth when using version control.

Image files should remember the settings applied when loaded or from Save As. There does not appear to be a way to set global file-type defaults to reduce some of this behavior.

Exact steps for others to reproduce the error

Switch to the Texture Paint workspace.
Click "New" to create a new texture. Set Width/Height: 2048x2048, 32-Bit Float: Checked
Switch to the "Paint" mode if needed and draw a circle.
Click Image / Save As. File Format: OpenEXR, Color: RGB, Color Depth: Float (Half), Codec: ZIP (lossless)
Open a File Explorer window and note the saved file size is roughly 300KB.
Click Image/ "Save" (not Save As) to re-save the file. Note the image file is now roughly 1MB. (It appears Blender has now forgot the file should be Float (Half)
Close Blender and Save the scene.
Open Blender and the saved scene.
Click Image/ "Save" to re-save the file again. Note that the image file is now roughly 50MB as Blender appears to have lost the Codec setting and the Float (Half) setting.

This bug occurs on other file types as well such as PNG where the compression settings are lost.

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 497.29 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` **Description** When re-saving a modified imaged (from Texture Painting for example), the newly saved file appears to lose all settings used during the original "Save As" operation. For file types such as OpenEXR that were saved as 16-bit using Zip compression, this can result in a file that was roughly 800KB becoming *64MB* in size. This wastes quite a large amount of disk space and bandwidth when using version control. Image files should remember the settings applied when loaded or from Save As. There does not appear to be a way to set global file-type defaults to reduce some of this behavior. **Exact steps for others to reproduce the error** * Switch to the Texture Paint workspace. * Click "New" to create a new texture. Set Width/Height: 2048x2048, 32-Bit Float: Checked * Switch to the "Paint" mode if needed and draw a circle. * Click Image / Save As. File Format: OpenEXR, Color: RGB, Color Depth: Float (Half), Codec: ZIP (lossless) * Open a File Explorer window and note the saved file size is roughly 300KB. * Click Image/ "Save" (not Save As) to re-save the file. Note the image file is now roughly 1MB. (It appears Blender has now forgot the file should be Float (Half) * Close Blender and Save the scene. * Open Blender and the saved scene. * Click Image/ "Save" to re-save the file again. Note that the image file is now roughly **50MB** as Blender appears to have lost the Codec setting and the Float (Half) setting. This bug occurs on other file types as well such as PNG where the compression settings are lost.

Doug Cox commented

2022-02-12 04:29:59 +01:00

Added subscriber: @ziflin

Pratik Borhade commented

2022-02-12 08:15:56 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-02-12 08:15:56 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2022-02-12 08:15:56 +01:00

Thanks for the report. I can confirm settings are not retained after saving the image once.

Note that the image file is now roughly 50MB as Blender appears to have lost the Codec setting and the Float (Half) setting.

This is also true. And behavior stands same on previous versions as well (2.83 is the oldest version I checked)
Confirming for now.

Thanks for the report. I can confirm settings are not retained after saving the image once. > Note that the image file is now roughly 50MB as Blender appears to have lost the Codec setting and the Float (Half) setting. This is also true. And behavior stands same on previous versions as well (2.83 is the oldest version I checked) Confirming for now.

Bastien Montagne changed title from ~~Re-saving images results in much larger (50-150x Larger) files.~~ to After `save as` operation with non-default options of Image, simple `save` operation does not use previous settings, but default settings again.

2022-05-03 11:40:04 +02:00

Philipp Oeser removed the

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After save as operation with non-default options of Image, simple save operation does not use previous settings, but default settings again. #95721

After `save as` operation with non-default options of Image, simple `save` operation does not use previous settings, but default settings again. #95721