IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Older bugs which are supposed to be fixed in 0.84. *** Please try to reproduce your bug and confirm the bug fix. ***

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masterjp
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IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by masterjp »

I did a test with the latest IrfanView 4.62 (webp library 1.32) and XnviewMP 1.5.5 (webp 1.30).
For conversion I used a folder with around 300 png files (1920x1080 pixel - loseless compression) and converted them directory to webp loseless.

IrfanView took around 6 minutes.
Xnviewmp need around 26 or more minutes.

Both compressed the files to the same size, but sometimes XnvIewmp compressed them up to 2% better.

Why is XnViewMP so slow?

I do not have any settings in the conversion list.
Does the new webp 1.32 library have a performance optimization? I did not read anything about it.
PC: Intel 8700k + Asus Z370-F + 16 GB RAM G.Skill + Asus RTX 3050 OC + Samsung SSD
OS: Windows 10 Pro 64bit 22H2 |
GFX: XN-View 2.51.5 | XnViewMP 1.6.3 | XnConvert 1.99 | Adobe Photoshop Elements 2024 | Elements XXL 11 | Paint.Net
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xnview
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by xnview »

i've tried, and have same speed. Which options for WebP?
Pierre.
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masterjp
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by masterjp »

I did the test again with 3 png files. In the past Xnviewmp and irfanview did the conversion job in the same time.

XnviewMP 1.5.5 needs 1 minute and 32 seconds! (Around 30 seconds per file)
Irfanview 4.62 (with latest webp 1.3.2) did the conversion in 11 seconds! (4 seconds per file)

If you convert around 100 files, the time is much bigger.

Here you can see my irfanview settings:
Irfanview.png

xnviewmp settings:
xnviewmp-settings.png
xnviewmp-webp.png
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PC: Intel 8700k + Asus Z370-F + 16 GB RAM G.Skill + Asus RTX 3050 OC + Samsung SSD
OS: Windows 10 Pro 64bit 22H2 |
GFX: XN-View 2.51.5 | XnViewMP 1.6.3 | XnConvert 1.99 | Adobe Photoshop Elements 2024 | Elements XXL 11 | Paint.Net
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xnview
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by xnview »

really strange, i have 5sec per file on both. Please send me a png sample file?
Pierre.
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masterjp
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by masterjp »

Here is a link for a sample png file:

https://www.dropbox.com/scl/fi/2jsccqbc ... s0ncx&dl=0
PC: Intel 8700k + Asus Z370-F + 16 GB RAM G.Skill + Asus RTX 3050 OC + Samsung SSD
OS: Windows 10 Pro 64bit 22H2 |
GFX: XN-View 2.51.5 | XnViewMP 1.6.3 | XnConvert 1.99 | Adobe Photoshop Elements 2024 | Elements XXL 11 | Paint.Net
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xnview
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by xnview »

:bugconfirmed: Thanks to your detailed description I can reproduce the problem.
It's related to method > 4
Pierre.
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masterjp
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by masterjp »

Good news! Thank you! :)
PC: Intel 8700k + Asus Z370-F + 16 GB RAM G.Skill + Asus RTX 3050 OC + Samsung SSD
OS: Windows 10 Pro 64bit 22H2 |
GFX: XN-View 2.51.5 | XnViewMP 1.6.3 | XnConvert 1.99 | Adobe Photoshop Elements 2024 | Elements XXL 11 | Paint.Net
paradiselost
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by paradiselost »

Hello,

Just for information, you can significantly improve performance during mass conversions by activating the "use multiple CPU cores" option.
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xnview
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Re: IrfanView 4.62 vs XnViewMP - batch conversion - loseless webp speed comparison

Post by xnview »

This problem is supposed to be fixed in XnView MP 1.6.0. Please check and confirm the bug fix here.
Pierre.