Hi Gérald
On Sat, 8 Feb 2014, Gérald Maruccia wrote:
Hello !
Some feedback after installing 1.64
First surprise the deb package for ubuntu 13.10 is about 230 Mo - I did not remember that
with previous version or maybe I had never paid attention to that before.
Thanks for spotting that, yes, it has been built with debug information
when it shouldn't have been. I'll fix that.
Today with dcp-o-matic I've tried for the first
time to create a DCP
from image sequence and 6 mono wav (48khz signed 24 bits pcm) tracks
exported from Audacity - like the good'ol fashionned way with still
useful open-dcp ;-) The image folder contains 288 png files in 1998x1080
pixels 72 dpi rvb, aiming a 12 seconds transition in 24 fps.
When I import the image folder, previewing the video is almost
impossible : it is very slow and freezes the computer - which is a core
i7 with 16 Go Ram running ubuntu 13.10 64 bits I hoped that's enough to
avoid hardware slow down !
How big are the PNG files (in megabytes)? I don't think previewing video
from stills is going to work very well for the immediate future: the
required disk bandwith is rather high.
Other surprise is length of the audio tracks : I
carefully checked in
audacity my tracks are 12 seconds long (with display time set to
hh:mm:ss:frame for 24 fps film). Once imported in dcp-o-matic it shows
11 seconds and 23 frames long. Not a big deal on this very short trial.
Maybe improving the way figures (and zero) are displayed and aligned in
duration tab would improve readability - I first thought it was 11,23
seconds long which is really not the same !
I will try to improve the labelling, and look into that off-by-one.
Anyway I made the DCP... Transcoding was quite slow
using 6 threads out
of 8 and never get over 1,7 images per second.
Let's see about your PNG file size and work out whether that's reasonable
or not: was the CPU being maxed out?
Best regards
Carl