File with .ASS extension contains a script for creating video subtitle text formatted using SubStation Alpha standard. ASS files are generated by Aegisub, an open-source multiplatform tool for creating and editing video subtitles. ASS is a text file divided into four or five parts, which contain:
ASS format is an extension of SubStation Alpha standard that closely follows SSA v4+ specification. Files conforming to basic SSA v4 standard use .SSA extension. ASS subtitle scripts are used to overlay subtitles on video image in a process called hardsubbing. Matroska multimedia containers (MKV files) also support ASS subtitles, which can be added to the video as a separate file (so called softsubbing).
The following list contains programs grouped by 3 operating systems that support ASS files. ASS files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.
Being unable to open files with ASS extension can be have various origins. What is important, all common issues related to files with ASS extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The following is a list of guidelines that will help you identify and solve file-related problems.
The main and most frequent cause precluding users form opening ASS files is that no program that can handle ASS files is installed on user’s system. This issue can be addressed by downloading and installing Aegisub or different compatible program, such as VLC media player, MPlayer, URUworks Subtitle Workshop. The full list of programs grouped by operating systems can be found above. If you want to download Aegisub installer in the most secured manner, we suggest you visit website and download from their official repositories.
You still cannot access ASS files although Aegisub is installed on your system? Make sure that the software is up to date. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. This can be one of the causes why ASS files are not compatible with Aegisub. The latest version of Aegisub should support all file formats that where compatible with older versions of the software.
If you have the latest version of Aegisub installed and the problem persists, select it as the default program to be used to manage ASS on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.
Change the default application in Windows
Change the default application in Mac OS
Should the problem still occur after following steps 1-3, check if the ASS file is valid. Problems with opening the file may arise due to various reasons.
Should it happed that the ASS is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. ASS file is infected with malware? Follow the steps suggested by your antivirus software.
If you obtained the problematic ASS file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. When downloading the file with ASS extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.
Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.
If the systems has insufficient resources to open ASS files, try closing all currently running applications and try again.
Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Aegisub Advanced Substation Alpha Format files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle ASS files.
If you have additional information about the ASS file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on ASS file.