Vgm trim
vgm_trim is a tool for trimming and looping VGM files.
Usage:
vgm_trim <file.vgm> startSample loopSample endSample
Example:
vgm_trim track1.vgm 15280 23499 194222
The parameters startSample
, loopSample
and endSample
are expressed in 44100Hz samples.
Usually, you can use vgmlpfnd
to obtain a reasonable loopsample and endsample before getting a good startsample with vgm2txt
You can have different approaches to the workflow of finding good sample points. One approach (used by MaliceX) where vgmlpfnd
fails to find a good loop point, you can fall back to listening for the approximate looping times, then use `vgm2txt` to trace for the sample values to use for looping. Sometimes it is useful to use a 44100Hz WAV recording and finding the approximate sample points with an audio editing software, such as Audacity, Wavosaur, Sony Sound Forge among others, then cross-checking the desired sample values with vgm2txt
.
If you're familiar with assembly, the intuition of using vgm2txt
to finding the best sample point through looking for the relevant command patterns should be similar to finding a good opcode to replace with a JMP
in a disassembly.