Hsalf 0.0.1

Hsalf is a pure Python library to write and read Flash files (SWF).

Hsalf supports SWF file, both compressed and uncompressed formats.

Example

This example prints out file version, frame rate, and all tag codes:

from hsalf import swf
f = swf.SwfFile('screen.swf')
print f.header.file_header.version
print f.header.frame_header.frame_rate

for tag in f.iter_body():
 print tag.tag_code

This function extracts frames from a Screen Video from a Flash movie:

def extract_screen_video(file_name, stream_id, dst_dir='.'):
 import os
 import Image

 swf = SwfFile(file_name)
 last_img = None
 for tag in swf.iter_body():
 if isinstance(tag, VideoFrameTag) and tag.stream_id == stream_id:
 svp = ScreenVideoPacket().deserialize(
 StringIO(tag.video_data))
 if svp.frame_type == KEY_FRAME:
 last_img = Image.new('RGB',
 (svp.image_width, svp.image_height))
 img = svp.to_image(last_img)
 img.save('{0}{1}{2:05d}.png'.format(dst_dir, os.sep,
 tag.frame_num))
 last_img = img

There are some sample scripts to extract other materials from SWF file in scripts directory.


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Requirements:

· Python