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#JPEG size changes…

9 messages in this thread

#151854From: DONALD NEWLANDSFeb 8, 1995 10:41 PM

Hi, We just ran out of space and decided to give JPEG a try on a long animation run. Funny thing is that about 1/3 of the files are about 1/4 the size of the rest: 50k vs 200k. We are rendering the project on four machines, and I haven't looked to see if there is one machine in particular that is packing them smaller, but I have do wonder why this might be happening? Thanks, Donald

#151900From: John EllisFeb 9, 1995 2:42 AM

Donald, >> Funny thing is that about 1/3 or the files are about 1/4 the size of the rest… << Eeek! That may not be so funny when you find out the reason why! Check to make sure the compression level on all four machines is the same!!! That could definitely account for it. I hope that's not the case! John

#151909From: DONALD NEWLANDSFeb 9, 1995 4:31 AM

John, I'm pretty sure that the compression level is the same on all the machines but I'll sure check… (I've had no reason to change it!) It makes me wonder if the compression level dialogue when net rendering JPEG files is just a formality…. (sigh!) Well, as soon as we get NDUMP up and some more storage on line, we'll be back to rendering TGAs anyhow! –Donald

#151974From: Paul Sanford [LVL5]Feb 9, 1995 12:59 PM

Are you saving off .jpg's to later process as .tga's to become .ani's for the PAR? Double compression supposedly looks pretty lousy. Just wonderin'. Paul S.

#151995From: DONALD NEWLANDSFeb 9, 1995 2:22 PM

Yup, we were JPEGing to re-compress in PAR — it was the only thing we could do — lots of frames, little time, little space… -Donald

#151939From: Yost GroupFeb 9, 1995 9:47 AM

John's suggestion about the JPEG compression level is the most relevant issue to look at. Other than that, the differences might have to do with what's going on with the scene at those specific frames (if the scen is changing radically enough). – G

#151999From: DONALD NEWLANDSFeb 9, 1995 2:29 PM

Gary, !!!False Alarm!!! I'm not sure what I was seeing anymore…<bg> There may have been same-named files from a previous render in the same dir… but I coulda' swore I checked the names and dates!?! Thanks, Donald

#152042From: John EllisFeb 9, 1995 7:09 PM

Donald, >>!!! False Alarm!!! << Better that than a fire. <G> Its always a scramble with new equipment etc. Glad you aren't having _real_ problems. 🙂 John

#152133From: DONALD NEWLANDSFeb 10, 1995 4:43 AM

John, <Better that than a fire> This hardware installation hell has just given me a short fuse! It would be kinda nice to have a "real problem", like a regular problem that has a "real solution"… I was really hoping that y'all would jump back at me in chorus with a one line fix! –Donald