Automatically find and download the right subtitles for your favorite videos!
The subtitles search is done by precisly identifying your video files by computing unique movie hash sums.
This way, you have more chance to find the exact subtitles for your videos, avoiding synchronization problems between the subtitles and the soundtrack.
: This is currently considered the best file type for PS2 ROMs . It significantly reduces file size while remaining a single-file format that most modern emulators can read directly without manual extraction.
| Method | Tool | Compression Ratio | Emulator Support | Speed | |--------|------|------------------|------------------|-------| | (lossless) | chdman (MAME) | Very high (~30–40% of ISO) | PCSX2, AetherSX2, RetroArch | Fast decompress | | CSO | CISO or Maxcso | High (~40–50%) | Older PCSX2, PPSSPP (PSP) | Slow | | 7z / ZIP | 7-Zip | Good (~50–60%) | Must extract to ISO first | Slow to extract | | GZip | Rarely used | Moderate | Not recommended | – |
Use . Its superior compression will give you the smallest file sizes for long-term storage, especially for games with a lot of audio. ps2 iso highly compressed high quality top
| Feature | CHD | CSO | | :--- | :--- | :--- | | | Uses LZMA (for game data) and FLAC (for audio) | Uses Deflate (can also use LZ4, Zopfli, 7-Zip deflate) | | Compression Ratio | Superior (saves more space) especially on games with extensive audio tracks | Good, but generally not as high as CHD | | Emulator Support | PCSX2 v1.7.0-dev-1156 and newer (Late 2020+) | PCSX2 v1.7.0 and newer | | Hardware Support | Limited (Open PS2 Loader) | Yes (Open PS2 Loader) | | Decompression Speed | Slower, requires more CPU power | Faster, more efficient on lower-end CPUs | | Ideal For | Long-term archiving and maximum space savings. | Everyday gameplay on mid-range hardware. | | File Type | Typically used for CD-based games (cue/bin) but works on DVD ISO as well | Typically used for DVD-based games (ISO) |
If you have original discs:
Search for and download namco_chdman_installer or get CHDMAN directly from official MAME tools distribution sites.
For PS2 emulation, is the gold standard. It offers superior compression ratios compared to CSO and causes zero in-game stuttering or audio lag. Top PS2 Games That Benefit Most From Compression : This is currently considered the best file
What Does "Highly Compressed & High-Quality" Mean for PS2 ISOs?
Keeps all original game data intact; widely supported. Cons: Requires a PC tool to convert standard ISOs. 2. CSO (CISO Compressed ISO) Its superior compression will give you the smallest
Warning: Downloading or distributing copyrighted PS2 game ISOs without permission is illegal in many jurisdictions. Use this guide only for legally owned games or public-domain/homebrew titles.
GitHub page Wiki Release notes Issue tracker
Installation instructions On the on the wiki page, and always up-to-date!
Configuration instructions To change the search language and more advanced tune-in (optional).
python (version 3.6+)zenity (for GNOME GUI)kdialog (for KDE GUI)wget (subtitles downloading with GUI), ps & grep (GUI autodetection)
# Make sure the destination directory for nautilus scripts exits
mkdir -p ~/.local/share/nautilus/scripts/
cd ~/.local/share/nautilus/scripts/
# Download the script and make it executable
wget https://raw.githubusercontent.com/emericg/OpenSubtitlesDownload/master/OpenSubtitlesDownload.py
chmod u+x OpenSubtitlesDownload.py