Created
May 5, 2011 15:23
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Print base64 encoded nalu payload from H264 AnnexB file
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import base64 | |
import sys | |
def get_nalus(file_name, count): | |
bitstream = open(file_name, "rb") | |
data = bitstream.read(count*3000) | |
data = base64.b16encode(data) | |
nalus = data.split('00000001') | |
for nalu in nalus[1:count+1]: | |
nalu_t = int(nalu[0:2],16) & int('1f',16) | |
print "Nalu Type: %s" %(nalu_t) | |
print nalu | |
print base64.b64encode(base64.b16decode(nalu)) | |
bitstream.close() | |
if __name__ == '__main__': | |
if len(sys.argv) < 3: | |
print "Usage: python nalus.py filename nalu_count" | |
exit() | |
get_nalus(sys.argv[1],int(sys.argv[2])) |
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