Is the i5 good enough for video editing? Well we kind of have to go back see the progression of Intel’s chipset and how they’ve evolved since.
The very first generation of chipsets started at a single-core. The second through fourth generation were dual-cores and then fifth generation moving forward become quad-core. 6th generation Skylake processors were able to handle light loads of processing however multi application support was limited and would struggle with simple 1080P footage.
Kaby Lake is where the changes in 7th generation architecture was able to advance into the markets as truly usable processors for normal everyday use but still be able to handle light editing and fit within specific workflows. Current generation Coffee Lake processors are now to the level of where previous generation i7’s were at quad-core with 4 threads and able to handle heavier editing so much as the other pieces of hardware were comparable to keep up with the performance.
With the i5’s, they may handle editing however with anything higher such as rendering, they may struggle slightly unless you have either the highest level i5 or step up to an i7. With the current generation i5 processors, editing will work but to a limit. They will do the job.