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ijontichy@ultinoob ~ $ glc2webm zandronum-1181-0.glc 60 512 32
warning: zandronum-1181-0.webm existed beforehand, moved to zandronum-1181-0.webm.old
Encoding zandronum-1181-0.glc at FPS of 60 at 512k, with quality 32
Dumping to MP4...
Pass 1...
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
Pass 2...
dun, look at zandronum-1181-0.webm (size 2.4M)