0.96.4: Extra black lines on heic files with certain resolution
Posted: Tue Aug 04, 2020 4:52 am
XnView: MP 0.96.4 - 64 bit
OS: Windows 10 - 64bit
Effect: Unable to get the expected heic file
To reproduce:
1. Create an image with 2376*3583px resolution and save it into any format. (For example, using Microsoft Paint to create a new one with 2376*3583px resolution and save it into a.png).
2. Open a.png with XnView MP.
3. Using File-Save as to save it into a.heic. Write settings can be adjusted arbitrarily.
Actual behaviour (bug): Some extra black lines appears on a.heic.
Expected behaviour: No extra lines
Additional information:
1. Although without fully tested, this bug does not seem to affect images with other resolution. After some tests, the bug seems to affect any image that has odd number in horizontal resolution or vertical resolution.
2. The bug can be reproduced no matter how does the Original file created. Images created by Image processing software or scanners both affected by the bug if they are with 2376*3583px resolution.odd number resolution.
3. The bug seems caused by the HEIF Image Extension, because it can be reproduced in Microsoft Paint. I also reported the bug to Microsoft but don't get feedback yet. However, the bug can still be reproduced after installing the plugin viewtopic.php?f=82&t=36661 . Since the HEIF Image Extension can't be uninstalled, I am not sure which encoder XnView used to save image into heic after installing the plugin. If the bug actually caused by the HEIF Image Extension, is there any alternative encoders?
OS: Windows 10 - 64bit
Effect: Unable to get the expected heic file
To reproduce:
1. Create an image with 2376*3583px resolution and save it into any format. (For example, using Microsoft Paint to create a new one with 2376*3583px resolution and save it into a.png).
2. Open a.png with XnView MP.
3. Using File-Save as to save it into a.heic. Write settings can be adjusted arbitrarily.
Actual behaviour (bug): Some extra black lines appears on a.heic.
Expected behaviour: No extra lines
Additional information:
1. Although without fully tested, this bug does not seem to affect images with other resolution. After some tests, the bug seems to affect any image that has odd number in horizontal resolution or vertical resolution.
2. The bug can be reproduced no matter how does the Original file created. Images created by Image processing software or scanners both affected by the bug if they are with 2376*3583px resolution.odd number resolution.
3. The bug seems caused by the HEIF Image Extension, because it can be reproduced in Microsoft Paint. I also reported the bug to Microsoft but don't get feedback yet. However, the bug can still be reproduced after installing the plugin viewtopic.php?f=82&t=36661 . Since the HEIF Image Extension can't be uninstalled, I am not sure which encoder XnView used to save image into heic after installing the plugin. If the bug actually caused by the HEIF Image Extension, is there any alternative encoders?