Very small files (smaller than 100 bytes or so) as well as dummy files (0 bytes) doesnt admits compression because are so small that the compression algorithm is not able to reduce them, they will be stored without compression inside the. For this reason is better to dont compress multimedia files because the size reduction is ridiculous and read access times can be reduced (causing a delay/lag/freeze when trying to load the file) psarc format, allows for 9 compression levels but in the practise only are used level 0 (no compression) or 9 (max compression used as the default compression level)Ĭompression level 9 for generic file types results as a compression ratio of around 50% of the original size, the final compression ratio can vary for different types of files, usually multimedia files (video, audio, etc) doesnt admits much compression because are already compressed originally (as example, max compression ratio for. The compression algorithms, the PS3 system, and the. psarc contents by reading the archive flags that are needed to process the access paths in the manifest psarc contents are mounted by the system/game, this methods are enabled by the archive flags stored in the header, the system/game knows how to recreate the filesystem paths and mounts the. There are 3 different methods to generate this paths that defines how the. The access paths are stored in a special file generated at build time called manifest, It mimics a standard tree structure of folders/files but the root of the hierarchy is not defined, this way the contents of the psarc can be 'mounted' by the system/game as part of his filesystem at any place and under any device letter/name Play Station ARChive is a generic file container that uses an internal hierarchy of subfolders with defined access paths, and optional zlib or lzma per-file compression 5.2 Generating a XML by using regular expressions.5.1 Generating a filelist.txt by using regular expressions.

3.4.8.1 Regular expression support (regex).3.4.2.1 Performing actions with an XML list.

Psarc tool downloader