42 lines
1.0 KiB
Python
42 lines
1.0 KiB
Python
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import cStringIO
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from flvlib import tags as flv_tags
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import traceback
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def GetFLVProperties( file ):
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file_handle = cStringIO.StringIO( file )
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flv = flv_tags.FLV( file_handle )
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script_tag = None
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for tag in flv.iter_tags():
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if isinstance( tag, flv_tags.ScriptTag ):
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script_tag = tag
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break
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width = 853
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height = 480
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duration = 0
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num_frames = 0
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if script_tag is not None:
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tag_dict = script_tag.variable
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# tag_dict can sometimes be a float?
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# it is on the broken one I tried!
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if 'width' in tag_dict: width = tag_dict[ 'width' ]
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if 'height' in tag_dict: height = tag_dict[ 'height' ]
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if 'duration' in tag_dict: duration = int( tag_dict[ 'duration' ] * 1000 )
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if 'framerate' in tag_dict: num_frames = int( ( duration / 1000.0 ) * tag_dict[ 'framerate' ] )
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return ( ( width, height ), duration, num_frames )
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