2 instances of ffmpeg = disk fragmenation

[thodge]

When preparing files with nav packs, SVCD launches two instances of ffmpeg. Which causes severe disk fragmentation (2500 fragments in a 200M file). I think previous versions only launched 1 ffmpeg. Is there a way to limit the number of ffmpeg instances. I tried setting processor affinity to 1 processor, same result.

SVCD2DVD v2.5.5020.
Windows Vista Home Premium
TOSHIBA Satellite A215
Processor AMD Turion(tm) 64 X2 Mobile Technology TL-60, 2000 Mhz, 2 Core(s), 2 Logical Processor(s)
Installed Physical Memory (RAM) 2.00 GB
Total Physical Memory 1.87 GB
Available Physical Memory 516 MB
Total Virtual Memory 3.98 GB
Available Virtual Memory 2.28 GB
Page File Space 2.17 GB

[ChrissyBoy]

What assets types are you referring to?

[thodge]

mpg file. Here's the dump from MediaInfo...

Format : MPEG-2 Program
Format/Family : MPEG-2
File size : 135 MiB
PlayTime : 2mn 6s
Bit rate : 8919 Kbps

Video #0
Codec : MPEG-2 Video
Codec/Family : MPEG-V
Codec profile : Main@Main
Codec settings, Matrix : Standard
PlayTime : 2mn 6s
Bit rate mode : CBR
Bit rate : 7916 Kbps
Nominal bit rate : 6000 Kbps
Width : 720 pixels
Height : 480 pixels
Display Aspect ratio : 16/9
Frame rate : 29.970 fps
Standard : NTSC
Chroma : 4:2:0
Interlacement : Top Field First

Audio #0
Codec : MPEG-1 Audio layer 2
PlayTime : 2mn 6s
Bit rate mode : CBR
Bit rate : 384 Kbps
Channel(s) : 2 channels
Sampling rate : 48 KHz
Resolution : 16 bits
Video0 delay : 126ms

Menu #0
Codec : DVD-Video