To QC DCPs, I usually convert them to ProRes in FFMPEG. The resulting
file can be viewed in VLC on a pretty basic computer, or stepped through
frame-by-frame in an editor with scopes, audio meters etc. If there's
judder, you'll see it.
Here's an article that explains the process:
I understand that FFMPEG's colour conversion isn't perfect but in my
experience it's generally good enough to see when something's gone wrong.
I'm Mac and Linux only and so as far as I know, there's no free DCP
player available.
But if anyone thinks this is a bad way to go about it, please say so!
Jim
On 05/01/2017 23:50, Leslie Hartmier via DCPomatic wrote:
Alec,
I understand that you are storing your content on an SSD, but is it an
external drive, or internal? If it is running off an external, you
are limited to the data transfer rate of your connection, whether that
be USB, Thunderbolt, Firewire, or eSATA, and that might not be enough
for you to guarantee a sufficient stream. If it is an internal hard
drive (assuming SATA), you'd have a maximum throughput of either 1.5
Gbps or 3.0 Gbps (no one ever reaches the upper limits, generally), so
at that point, I'd start to look at other hardware. To be sure, you
should never test content from an external drive, just because of the
data transfer rate.
Also, what video card and CPU are you using to view it? On my tablet,
such things stutter a bit, on my work computer, it sometimes has a
hiccup, and on my home computer, I'd be surprised if I couldn't run
two simultaneously with no stutter.
I tend to use Stereoscopic Player (
http://3dtv.at/Downloads/Index_en.aspx ) for my playback needs (I
bought mine, but the free version drops out after 5 minutes of
playing, but it's basically enough to ensure that the content looks
fine, but the downside is that it does not work with encrypted
content). Oh, Carsten already gave you that link. Well, I actually
use that one, so I can at least endorse it. :)
Hope any of that helps.
Leslie
------------------------------------------------------------------------
*From: *"Carsten Kurz via DCPomatic" <dcpomatic(a)carlh.net>
*To: *"dcpomatic net carlh" <DCPomatic(a)carlh.net>
*Sent: *Thursday, January 5, 2017 3:40:33 PM
*Subject: *Re: [DCP-o-matic] Playback issues
Am 05.01.2017 um 22:37 schrieb Alec Trupiano via DCPomatic:
hello,
I recently created a DCP of my short film, but when I play it, the
video stutters
by a LOT. I'm running a high end PC (Windows 7),
playing the file off a SSD. I'm trying to figure out asap if its an
issue of my PC, the player I'm using or the DCP file itself. The
player is called DigitAll DCP Player, and I'm awaiting a response from
them on the issue. If its only an issue of the player, I should be
fine since I'm sure the venue at the festival will have good enough
hardware. If it's an issue with the DCP file though, I really need
this figured out in time for next week.
Hi,
I have good experience with the DigitAll Player on a simple Dell i3
notebook with integrated graphics. There are, however, different
playback quality settings you can choose. To check smooth DCP
playback, try one of the lower quality settings.
Have there been any frame range changes between your source material
and the final DCP? What is the resolution and datarate that you chose
when you created the DCP?
For a quick check, try
http://www.3dtv.at/Downloads/Index_de.aspx on
the MXF video file of the DCP.
- Carsten
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