Running 9400: Batch Files and switch HD/SD at bootup
The programs in the 9400 (of which there are four: HD Encoder, HD Decoder, SD Encoder, SD Decoder) are run by batch files: runehd.bat, rundhd.bat, rune.bat, and rund.bat, respectively. Those batch files both run the executables for the programs as well as starting an operating system loop to re-open them in the event of a shutdown in the software. Batch files† re launched in groups by the following additional batch files:
To switch from HD to SD, edit the registry's "run at startup" selection to change the default (after install) runfxhd.bat to runfx.bat, as you can see in this screenshot, attached. To edit the registry, run "regedit" from either the Run prompt or command-line, or search for the Registry Editor.
The registry should be opened to Computer\HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run, but you can also use Ctrl-F to search the Data fields for "runfx" and that should land you here.†
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