You use HJSplit to split and join files , but when using the Start button, you get the "I / O error 123" error message. And how to overcome?
Most of the time when using HJSplit, the error is due to improper use of the user, so this situation occurs. So please refer to the following article to understand the causes and find solutions to continue the process of file splitting:

I / O error message error 123
Cause of error I / O error 123:
- Because the folder containing the file is Vietnamese.
- Because the names of the paired files do not match.
How to fix the error:
Please rename the folder or existing files inside that folder with unsigned characters. Because HJSplit does not support other languages, naming it will cause the above error.
Rename the same pair of files, only the component behind.
For example: As shown in the picture below, there are 7 files separated from the complete file, then named as: Hai-Hoai-Linh.MP4.001, Hai-Hoai-Linh.MP4.002 until Hai-Hoai-Linh. MP4.007 so that when pairing does not occur I / O error 123.
![How to fix error I / O error 123 in HJSplit How to fix error I / O error 123 in HJSplit]()
This error is very easy to fix, but many people have got in trouble and struggling to find a solution. Hopefully the above article will help you use HJSplit more effectively.
In addition, you can refer to the following software: MKVToolnix , Alon Video Joiner , Zealot Video Workshop ... to split and join Video easily and quickly.
I wish you successful implementation!