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--- disk_image_compression [2023/06/06 17:57] – maioni
+++ disk_image_compression [2026/03/27 10:24] (current) – ↷ Links adapted because of a move operation 40.77.167.44
@@ Line 30: / Line 30: @@
   * [[systems:3do]]
   * [[systems:dreamcast]]
-  * [[systems:segacd]]
+  * [[systems:megacd]]
   * [[systems:neogeocd]]
   * [[systems:pcenginecd]]
@@ Line 63: / Line 63: @@
 ==== Creating CHDs ====
-''chdman'' is a commmand line application. It can create a ''.chd'' file by targeting ''*.cue'', ''*.iso'' or ''*.gdi'' files.
+''chdman'' is a commmand line application. It can create a ''.chd'' file by targeting ''*.cue'', ''*.iso'', ''.nrg'' or ''*.gdi'' files.
 If there is a ''*.cue'' file available, use this for creating the ''.chd''. Otherwise choose the ''*.iso'' (Sony PlayStation 2 DVDs) or ''*.gdi'' (Dreamcast GD-ROM) file. Note that GameCube/Wii have their [[#rvz|own compressed format]].
@@ Line 88: / Line 88: @@
 </code>
-Then make yourself a cup of tea. This can take a while. After that you'll have ''<game.chd>'' and you can delete the ''*.cue''/''*.bin'', ''*.iso'' or ''*.gdi''/''*.bin'' file(s).
+Then make yourself a cup of tea. This can take a while. After that you'll have ''<game.chd>'' and you can delete the ''*.cue''/''*.bin'', ''*.iso'', ''.nrg'' or ''*.gdi''/''*.bin'' file(s).
 The compression is fully lossless so it is possible to redo the compression and get the original files back:
@@ Line 95: / Line 95: @@
 chdman extractcd -i <game.chd> -o <game.cue>
 </code>
+For DVD-based systems, you can use the ''createdvd'' command rather than ''createcd'' in the examples above. It is usually a little more efficient in term of compression (7-10% gain on the resulting ''.chd'' file) but it also provides better performance in-game.
 === CHD batch converting ===
@@ Line 102: / Line 104: @@
 **Linux/macOS:**
-Navigate to the folder that has all your game ROMs and run the following ''for'' loop to convert all the files in one go:
+Place the script into your folder that holds your ROMs and execute the script. This will take it's time. So relax....
-<code>
+<file bash allimg-to-chd.sh>
-for i in *.cue; do chdman createcd -i "${i}" -o "${i%.*}.chd"; done
+#!/usr/bin/env -S bash #PROTECTED
-</code>
+grep -rlq $'\r' "$0" && { dos2unix -k -q "$0"; echo "Script repaired ... please try again"; exit 0; } # Selfrepair for called script
+pushd "$(dirname "$0")"
+readarray -t array < <(find -maxdepth 1 -type f \( -iname "*.cue" -o -iname "*.iso" -o -iname "*.toc" -o -iname "*.gdi" -o -iname "*.nrg" \) -printf "%p\n")
+[ -z "${array[@]}" ] && { echo "No disc images found.... Exit now"; exit; }
+[ -f "/usr/bin/mame/chdman" ] || { echo "chdman not found! ... Exit now"; exit; }
+for i in "${array[@]}"; do
+    /usr/bin/mame/chdman createcd -i "${i}" -o "${i%.*}.chd";
+    echo; echo "You can remove file: $i and additionals if you want!"
+done
+popd
+</file>
-replacing ''*.cue'' as needed. If you're converting a lot of files, practice some yoga poses. This may take a while.
+replacing ''*.cue'' and other images as needed. If you're converting a lot of files, practice some yoga poses. This may take a while.
 Here's a command to convert all the games in the current folder and recursive folders to CHD:
@@ Line 126: / Line 138: @@
 find . -name "*gdi" -exec chdman createcd -i {} -o {}.chd \;
 </code>
+For ''*.toc'':
+<code>
+find . -name "*toc" -exec chdman createcd -i {} -o {}.chd \;
+</code>
+Note: find command is recursive, so it will convert files from subfolders.
 **Windows:**
@@ Line 146: / Line 165: @@
 <code - gdi-to-chd.bat>
 for /r %%i in (*.gdi) do chdman createcd -i "%%i" -o "%%~ni.chd"
+</code>
+For ''*.toc'':
+<code - gdi-to-chd.bat>
+for /r %%i in (*.toc) do chdman createcd -i "%%i" -o "%%~ni.chd"
 </code>
 Or combine both:
-for /r %%i in (*.cue, *.gdi, *.iso) do chdman createcd -i "%%i" -o "%%~ni.chd"
+for /r %%i in (*.cue, *.gdi, *.iso, *.toc) do chdman createcd -i "%%i" -o "%%~ni.chd"
 If you're converting a lot of files, play some tunes on your guitar. This may take a while.
+==== CDI / NRG / IMG TO CHD ====
+[[https://master.dl.sourceforge.net/project/mame/mame/0.138/mame0138b_64bit.exe|chdman 0.138b]] and below support converting ''.cdi'' files to CHD as well. It requires the additional [[https://www.cdiemu.org/download/cdifile-0.5.1.zip|cdifile]] executable to be in the same directory as it.
+<WRAP center round important>
+Newer versions of chdman (0139+) are not compatible with cdifile.
+</WRAP>
+Put the files ''chdman.exe'' and ''cdifile.exe''in the same directory
+And run the code line command:
+**For Windows:**
+<code>
+cdifile.exe game.cdi -createcd
+cdifile.exe game.nrg -createcd
+cdifile.exe game.cue -createcd
+cdifile.exe game.img -createcd
+</code>
+These commands can also be run from WINE in any Linux distro.
+<WRAP center round tip>
+It's a good idea to test the game is still working after the conversion before deleting anything.
+</WRAP>
 ===== CSO =====
@@ Line 201: / Line 251: @@
 **Linux/macOS:**
-<code>
+<file bash iso-to-cso.sh>
-for i in *.iso; do maxcso "${i}"; done
+#!/bin/bash
-</code>
+for i in *.iso;
+do maxcso "${i}";
+done
+</file>
 **Windows:**
-<code>
+<file - iso-to-cso.bat>
 for %i in (*.iso) do maxcso.exe "%i"
-</code>
+</file>
 === With ciso ===
@@ Line 247: / Line 300: @@
 **Linux/MacOS:**
-<code>
+Create a file with these contents...
-for i in *.iso; do ciso 9 "${i}" "${i}".ciso; done
-</code>
+<file bash iso-to-ciso.sh>
+#!/bin/bash
+for i in "$@"; do
+    ciso 9 "${i}" "${i%*.iso}".cso;
+done
+</file>
+...mark it executable with this...
+<code>chmod +x iso-to-ciso.sh</code>
+...and then run it like this:
+<code>./iso-to-ciso.sh *.iso</code>
 **Windows:**
-<code>
+<file - iso-to-ciso.sh>
 for %i in (*.iso) do ciso.exe 9 "%i" "%i".ciso
-</code>
+</file>
 ===== PBP =====
@@ Line 376: / Line 442: @@
 **Linux/MacOS:**
-<code>
+<file bash iso-to-pbp>
-for i in *.iso; do  -l 9 psxpackager -i "${i}" -o "${i}".pbp; done
+#!/bin/bash
-</code>
+for i in *.iso;
+do psxpackager -l 9 -i "${i}" -o "${i}".pbp;
+done
+</file>
+Here's a command to convert all the games in the current folder and recursive folders to PBP:
+<file bash all-to-pbp.sh>
+find . -name "*iso" -exec psxpackager -l 9 -i {} -o {}.pbp \;
+find . -name "*cue" -exec psxpackager -l 9 -i {} -o {}.pbp \;
+find . -name "*m3u" -exec psxpackager -l 9 -i {} -o {}.pbp \;
+</file>
 **Windows:**
-<code>
+<file - all-to-pbp.bat>
 for %i in (*.iso) do psxpackager.exe -l 9 -i "%i" -o "%i".pbp
-</code>
+for %i in (*.cue) do psxpackager.exe -l 9 -i "%i" -o "%i".pbp
+for %i in (*.m3u) do psxpackager.exe -l 9 -i "%i" -o "%i".pbp
+</file>
 OR
@@ Line 473: / Line 551: @@
   cd /userdata/roms/dos
   mksquashfs skweek.pc skweek.pc.squashfs
+  cd /userdata/roms/scummvm
+  mksquashfs "astro chicken" "astro chicken.squashfs" -comp xz
 Or to compress a single file :
@@ Line 490: / Line 571: @@
   or
   find . -maxdepth 1 -name "[^.]*" -type d -exec mksquashfs {} {}.squashfs -comp xz \;
+Or compress multiple .iso files to .squashfs:
+  for i in *.iso; do mksquashfs "${i}" "${i}".squashfs; done
+  for i in *.iso; do mksquashfs "${i}" "${i}".squashfs -comp xz; done
 After confirming that the game still launches and runs correctly, the old folder can be safely removed.