How to convert .USM into .MP4 and back | Jackbox modding

Опубликовано: 06 Август 2026
на канале: Maldevar
22,200
283

A small tutorial on how to correctly convert files without compressing them
I might do one on .bank extraction & just general jackbox modding
not sure if I can be bothered to

Don't be an idiot and share game files...

NOTE Akira has brought it to my attention that you can make an almost lossless .avi file using the following ffmpeg command
[ ffmpeg -i input.mp4 -brand mp42 -c:a pcm_s16le -ar 41000 -b:v 16M output.avi ]

Also check his video out; It's also a great tutorial on this subject :    • How to convert video files to USM format (...  

VGMToolbox : https://sourceforge.net/projects/vgmt...
FFMPEG : https://www.gyan.dev/ffmpeg/builds/
FFPROMPT : https://github.com/nightwolf93/Electr...
(You need 7zip to unzip that ^^ https://www.7-zip.org/ )
ScaleformVideoEncoder : https://www.3dstreaming.org/download/...
^^^^ if unavailable use Nexusmods (Requires login!) : https://www.nexusmods.com/witcher3/mo...

!-! Help on the "%03d" part !-!
for 001, 002, 003 ... 999 use %03d
for 1, 2, .. 15, 16, 17 ... use %d
for files that have letters you have the following options
if its image001, image002 ... you can use "image%03d"
otherwise you can just do "*.PNG"
(%03d looks for a padding of 3 digits that might have leading 0's, %d looks for numbers in order, * means it accepts all names, it only looks for the filetype)
/-/ If your sequence starts at like 75 you can do "-start_number #" before your "-i" /-/


0:00 Intro
0:40 .usm to .mp4
3:00 .mp4 to .usm

For reference this is the comparison between .avi and .tga
.avi : https://cdn.discordapp.com/attachment...
.tga : https://cdn.discordapp.com/attachment...
.avi using the complex command : https://media.discordapp.net/attachme...


Discord if you for some reason need it : -Depresso#7788- (use "Maldevar" instead)