How do I list all the files used in a .blend file?

Question

I need to cleanup my rushes/footages directories, so I'd like to be able to list, in command line, all the files referenced in a .blend file. I need to be able to, for every file found in a given directory, check if it is used in a particular .blend file.

Answer 1

Here is Python which examines the files in the Visual Sequence Editor VSE of Blender.

import bpy
import datetime

def time_stamp():
    print("-" * 88)
    print(datetime.datetime.now())
    print("-" * 88)



def inspect_v_strips(simple_sleek):
    filtername = "ring"
    for s in bpy.data.scenes:
        #if (isinstance(s.sequence_editor, bpy.types.SequenceEditor) and hasattr(s.sequence_editor,'sequences')):
        if hasattr(s.sequence_editor,'sequences') and (s.name.find(filtername) > 0):
            print("Using filtername[", filtername, "] .... Remove or adjust the filter in python above")
            print("Scene", s.name, "-" * 88)
            #for m in bpy.context.sequences:
            for m in s.sequence_editor.sequences:
                if isinstance(m, bpy.types.MovieSequence):
                    print(m.name, m.filepath, m.type)
                elif  isinstance(m, bpy.types.ImageSequence):
                    print(m.name, m.directory, m.elements[0].filename, "Length:" + str(len(m.elements)), m.type)
                else:
                    print(m.type, "More software to be written for other types")



def test333():        
    time_stamp()
    inspect_v_strips(False) 
    time_stamp()

test333()

The output in the console window was filtered to make it smaller and more readable for your question. In the python above the software inspects scenes which have the names which contain a string "ring". Of course you can delete that part of the test. You may delete ......

[and (s.name.find(filtername) > 0)]

Answer 2

You could use http://web.purplefrog.com/~thoth/blender/python-cookbook/list-referenced-files.html as a starting point:

import bpy
import os

def debug_print(msg):
    print(msg)

def list_referenced_images():
    rval = set()
    for img in bpy.data.images:
        if img.filepath is not None:
            debug_print ("IMAGE %s"%img.filepath)
            rval.add(bpy.path.abspath(img.filepath))
    return rval

def paths_for_vse_strip(strip):
    if hasattr(strip, "filepath"):
        return [ strip.filepath ]
    if hasattr(strip, "directory"):
        return [ strip.directory+elt.filename for elt in strip.elements ]
    return []

def list_vse_references():
    rval = set()
    for scn in bpy.data.scenes:
        if scn.sequence_editor is not None:
            for strip in scn.sequence_editor.sequences_all:
                for path in paths_for_vse_strip(strip):
                    debug_print("VSE %s"%path)
                    rval.add(bpy.path.abspath(path))
    return rval


def file_is_used(f, used):
    if f in used:
        return True

    # OMG, windows.  WTF?
    for f2 in used:
        if os.path.samefile(f2, f):
            return True

    return False


def mission1():
    used  = set()
    used.update( list_referenced_images() )
    used.update( list_vse_references() )

    dir = "/var/tmp/blender"
    for f in sorted(os.listdir(dir)):
        f2 = os.path.join(dir, f)
        if file_is_used(f2, used):
            print("USED\t%s"%f2)
        else:
            print("UNUSED\t%s"%f2)


mission1()

There is a good chance there are other external references somewhere in the data model, but those were the two that popped into my head (images and VSE).