How to detect scene strips in the VSE on frame changes?

Question

I need to detect scene strips in the VSE on the current frame, meaning on what strip is the play head at this moment? However I can't seem to find the right type(?) to attach the ".strip_elem_from_frame" function to, in order to get the info/name/type on the strip. Here's a test script which must run in a screen with a sequencer with scene and movie strips in it:

import bpy

#update at frame change
def currentStrip(*pArgs):
    print("Current Strip: "+str(bpy.context.sequences[0].strip_elem_from_frame(bpy.context.scene.frame_current))) #Doesn't detect any strips at all.

#add frame change handle
def attachAsHandler():
    for f in bpy.app.handlers.frame_change_pre:
        bpy.app.handlers.frame_change_pre.remove(f)
    bpy.app.handlers.frame_change_pre.append(currentStrip)

currentStrip()
attachAsHandler()    

Answer 1

This works, but I guess it could be more elegant and faster if ".strip_elem_from_frame" would work with scene-strips and nonactive strips. The current strip will be written in the Console.

import bpy

#update at frame change
def syncSceneLength(*pArgs):
    scn = bpy.context.scene
    seq = scn.sequence_editor
    cf = scn.frame_current
    for i in seq.sequences:    
        try:
            if (i.frame_final_start <= cf
            and i.frame_final_end > cf
            and not i.mute): 
                print("Current Strip: "+i.name)
        except AttributeError:
                pass

def attachAsHandler():
    for f in bpy.app.handlers.frame_change_pre:
        bpy.app.handlers.frame_change_pre.remove(f)
    bpy.app.handlers.frame_change_pre.append(syncSceneLength)

def detachAsHandler():
    bpy.app.handlers.frame_change_pre.clear()    

syncSceneLength()
attachAsHandler()
#detachAsHandler() #Uncomment this to stop handler