I’ve begun to answer my own question and I think I’m pretty close on this.
I’ve started to adapt a script I found from Gabor Toth (thanks Gabor!) and
hopefully this will help others as well.
I put a python button on the read node that contains the script below which
replaces the frame ranges correctly.
The reason I used a button is that it was an easy way to see if it would work,
and two, I couldn’t really figure out how to configure the command to the
specific node on demand.
Three questions:
1. Is a button the a good way to achieve this? I thought it might be best to
have it hardwired on the node as it will be buried in one or more gizmos (that
may be created procedurally) and I didn’t trust my Python chops to isolate it
from the other read nodes in the script
2. Assuming that this is the best approach how would I activate the button
press from another node?
3. Since the “file” value is generated by an expression ( in my case: [value
Controller.ClipPath] the real path isn’t being resolved to the script and
fails. It does work as expected with a text path. Would a different
expression technique work or do I have to create some additional python magic?
Thanks!
Michael
################
import nuke
import os
import os.path
import math
import glob
import re
n = nuke.thisNode()
seqPath = n.knob('file').value()
if seqPath is not None and re.match('.*\.%0.*', seqPath):
indx = seqPath.find('%0')
pattern = '%0' + seqPath[indx + 2] + 'd'
seqPathMask = seqPath.replace(pattern, '*')
print ''
print 'PathMask: %s' % (seqPathMask)
seqDir = os.path.dirname(seqPath)
print 'Directory: %s' % (seqDir)
if os.path.exists(seqDir):
files = os.listdir(seqDir)
#print files
#sorting files
filteredFiles = glob.glob(seqPathMask)
filteredFiles.sort()
if len(filteredFiles) != 0:
(firstFileName, ext) =
os.path.splitext(filteredFiles[0])
firstFileTags = firstFileName.split('.')
sfs = firstFileTags[-1]
print 'Extension: ' + ext
sf = int (sfs) # converted to int
print "Start frame: %s" % (sf)
(lastFileName, ext) =
os.path.splitext(filteredFiles[len(filteredFiles)-1])
lastFileTags = lastFileName.split('.')
efs = lastFileTags[-1]
ef = int (efs)
print "End frame: %s" % (ef)
n.knob('first').setValue(sf)
n.knob('last').setValue(ef)
else:
print 'No matching files in this directory! Skipping...'
else:
print 'Warning! Directory doesnt exist: ' + seqDir
else:
pass
> On Feb 7, 2017, at 11:16 AM, Michael Hodges <[email protected]> wrote:
>
> Is there a way to detect/update the frame range of an image sequence (
> Example_File.#####.dpx) in a read node?
>
> I’ve got some expressions that can change the input file within a gizmo read
> node but then I’m stuck with the previous file’s values. I understand that
> this may be end up having to be a some sort of python file-counting callback
> but I want to check first if there is a way of doing it within Nuke.
>
>
> Thanks,
>
> Michael_______________________________________________
> Nuke-users mailing list
> [email protected], http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
_______________________________________________
Nuke-users mailing list
[email protected], http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
