When comparing OBS vs Irfanview, the Slant community recommends OBS for most people. In the question“What are the best screen capture tools for Windows?” OBS is ranked 8th while Irfanview is ranked 13th. The most important reason people chose OBS is:
You can record videos in formats such as mp4, flv, mkv, and more. You also have control over the bitrate used.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Records to many popular formats
You can record videos in formats such as mp4, flv, mkv, and more. You also have control over the bitrate used.
Pro Free and open source
No subscriptions or payments or licenses.
Pro Available for Linux, Mac, Windows
Pro Live streams
Can be used to stream.
Pro Fast
From the website: "GPU-based game capture for high performance game streaming."
Pro Extendable
OBS has an API allowing developers to create their own unique plugins, giving them and others complete control of their streaming experience.
Pro Encoding using H264 (x264) and AAC and file output to MP4 or FLV
Pro Unlimited number of scenes and sources
Pro Some editing tools included (cropping, color correcting, etc...)
Pro Lots of plugins available
Plugins can be found here.
Pro Batch processing
Even exif information can be batch processed.
Pro Recognizes virtually any image format
Pro You can just scroll with your mouse to explore images
Pro Ultra fast
If you press and hold the right-arrow button (for displaying the next image), you can watch images pass by as if they are a video, it's that fast. No stuttering, it loads images as fast as your hard drive can keep up.
Pro Lightweight
Pro Can use 8bf (Photoshop) filters
Pro Easy updates
Very easy to update the program and its associated plugins.
Pro Irfanview Thumbnail Viewer is a convenient way to view all image files easily
Irfanview Thumbnail Viewer is a great way to view thumbnails of all image files, including thumbnails of WMF files which Windows cannot natively display.
Cons
Con Recording a window will not record the menu bar, popup menus or child dialogs
Con Overkill for simple projects
Plus the interface is a bit intimidating.
Con Needs tutorial to get started
Otherwise it's hard to find out how to record a screen or window.
Con GIF viewing is buggy
GIF viewing has longstanding problems like flickering, incorrect framerate or artifacts, and it is very unlikely that it will be ever fixed.
Con Irfanview Thumbnail Viewer crashes on accessing AVI files
For some reason, the Irfanview Thumbnail Viewer crashes when it tries to access any .AVI movie file.
Con No transparency support
The alpha is converted to the selected background color upon opening a picture. When saving the picture again, you can select a color which is converted to alpha again.
Con Missing some utilities
Like browsing files utility.
Con Preferences are hard to find
Con Windows only
Con UI is far from ideal
Sometimes the interface is confusing.