saving lossless pngs

Ted Wiggin's icon

Hey gang

I'm trying to get lossless pngs out of max, but I've found some slight color discrepancies.
Included is a simple patch that demonstrates my problem and a small PNG to use as an example.

If you hit the button a few times to overwrite the file with itself, you can see the 3m values changing- indicating that the color has not stayed the same.

Looking to see if I've overlooked some syntax to do this properly...
Thank you!
- Ted

Max Patch
Copy patch and select New From Clipboard in Max.

compressionTest.png
png
Ted Wiggin's icon

kk- reporting back. Jason Bernagozzi at signal culture just solved it for me- god bless~

Apparently its an issue with the AVF video engine which is the default in Max 7- I switched the video engine back to quicktime in preferences and bingo- lossless pngs