Compressor Bugging or Normal?
by nida sinnokrot
on
May 7, 2008 at 8:30:14 pm
Hello All ,
Im compressing a 72 min 10bit uncompressed sequence for use in DVD Studio Pro. My Compressor settings are tweaked so that my Average bit rate is 5.5, the max is 7.2, Progressive, Open IBBP set to 6 and One Pass VBR. I made a lot of tests on short excerpts and found this combo of settings looked great so I let her rip on the full sequence.
Compressor initially estimated approx. 80 hrs and I patiently waited while my MacBook Pro 2.66 with 4 gigs of ram crunched away. Last night the estimated time to completion reached 1min 57sec and then, it started going backwards.... It's now been 12 hrs and tells me 2min and 57 sec remaining. Why is it creeping sooo slow now that it reached the end?? Should I abort or keep waiting? I have a decent sized end credit scroll... could that be the problem? Anyone have experience with this? Should I pull the plug?
ps
I have compressed this film before without problems but Im aiming for a better quality compression hence the tweaked settings.
pps
Now it's telling me 3 min 28 sec.... So now it's been at 99% complete for almost 24 hrs...AAARRRGGGHHH help?
Re: Compressor Bugging or Normal? by nida sinnokrot on May 8, 2008 at 2:36:55 am
Hello and thanks for your reply.
Ive done it both ways in the past with success.
This time however I exported straight from the original sequence because i wanted the best possible quality. I was working from the understanding that Compressor would put an I frame on every cut in my edit and I was after as many I -frames as possible...
About half an hour ago I bit the bullet and copied the folder in my destination drive that the encode was being written to.
Then I quit Compressor and opened the M2V in Studio Pro.... IT WORKED just fine.. somehow it was reporting itself as being 99% complete and still ticking away when as far as I can tell it was actually 100% complete. I have no clue why but I am relieved it worked in the end... 102hrs later.
Re: Compressor Bugging or Normal? by Tom Brooks on May 8, 2008 at 12:18:27 pm
Could it be a disk or operating system issue rather than a Compressor issue? And yet, you said you have compressed the film successfully before. What type of drive were you writing to? Was it network storage or local? Were there changes in those types of things in addition to the compression changes that could also have caused this new problem?
Re: Compressor Bugging or Normal? by Rafael Amador on May 8, 2008 at 2:43:56 am
Hi Nida,
If you have edited 10b Unc, I think your MPG2 should be Interlaced-Upper First, instead of PROGRESIVE.
Are you exporting your sequence from the FC time-line?
If so FC-Compressor will render again al your movie. Even if have been already rendered in FC.
So instead of sending from FC you can import a Self-contained or Reference movie.
Anyway, if you have tweaked the setting in Compressor to "Best quality", every task will take ages.
BTW. I do not understand quite well your setting. If you want to make a good compression, you should start by making a Two-passes. There is no much sense in using "Short-open" GOPs with a One-pass. And if you use Short-open GOPs, you should rise your data-rate at least to 8.500Mbps. Short GOPs have more I frames, so needs higher data-rate.
Mac OX 10.5.2-FC 6.02-QT 7.4.1
G5 2x2Gh 4GbRAM-BlackMagic Extreme
PMBP 17"Core2Duo 4GbRAM-AJA ioHD
JVC DTV-17"
SONY EX-1 . SONY PD170
..and always a big mess on top of the table.
