The Source object represents a media file.
To construct a new Source, use Source(path, part=-1) where part is the part index if it is a multi-part source. Use MediaFormat.parts(path) to query the available parts in the file.
The path passed to Source should contain the frame range to use, in the form: /path/to/file.[0001-0999].ext. Use SequenceBuilder to aid in building the path in the proper format.
Attributes are read-only except where noted.
|audio||True if the source has audio|
|defaultStream||the default stream|
|fieldDominance||the field dominance setting|
|fieldHandling||the field handling setting|
|key||the source's image cache key|
|streamMask||the streams the source produces|
|video||True if the source has video|
|channelMask||the available channels||6.0|
|part||The part number||6.0|
|dependencies||List of dependent sources||7.0|
|layers||Source layer list||7.0|
|path(frame)||generate the path to the desired frame of media|
|metadata(frame)||return a metadata dictionary for the specified frame||6.0|
tools.sequenceBuilder contains the SequenceBuilder class which can be used to parse a filename and generate details such as start and end frames. path should be a frame from a numbered sequence and SequenceBuilder will find the start and end frames and construct a resulting path with the frame range built-in, suitable for constructing Sources from, in the form: /path/to/file.[start-end].ext.
from tools.sequenceBuilder import SequenceBuilder # the image sequence has frames 1-999 path = "/images/sequence.0001.exr" builder = SequenceBuilder(path) for f in range(0, builder.frames): print builder.build(f) # construct Sources using self.path, which has the frame range included source = Source(builder.path) print builder.path
This prints out /images/sequence.[0001-0999].exr.
Creating Multi-Layer Sources
EXR files can contain multiple Layers. There can only be one Source per layer, so if multiple layers must be accessed, the Source must be imported multiple times, and the layer specified using the layer property. Here is a code snippet that, given a selected Source with multiple layers, will create the additional Layer Sources automatically.
from fx import * beginUndo("Create EXR Layers") project = activeProject() try: source = selection() for layer in source.layers: if layer != "default": print "Creating Layer: " + layer path = source.property("path").value s = Source(path) project.addItem(s) s.property("layer").value = layer except Exception as e: print e endUndo()
Sources can be added to the Project with the Project.addItem() method.