vgm_smp1

This tool helps to reduce the size of VGMs by removing delays of 1 sample length.

Example

A sequence like this:

Delay 12 - Event A - Delay 1 - Event B - Delay 5

is rounded to:

Delay 12 - Event A - Event B - Delay 6

This tool is for

• VGMs that use the SN76489 and variants (SEGA PSG, T6W28, etc.)
  • Gains minor size reduction without audible artifacts
• VGMs converted from DRO files
  • Use with -delay:50
  • Might remove glitches that happen due to frequency writes being split by a 1/1000Hz delay

You should NOT use this tool with

• Anything not mentioned above
  • This tool is especially dangerous to commands for FM chips

If you have used this tool

... to remove samples from VGMs compressed using vgm_cmp, you should run vgm_cmp on them again. It may reduce the file size by some bytes.