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[downloader/f4m] The last value in a tag is the tag length

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This commit is contained in:
Antti Ajanki 2015-01-05 20:22:17 +02:00
parent 3b8f3a1504
commit 2c322cc5d6
1 changed files with 7 additions and 3 deletions
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10
youtube_dl/downloader/f4m.py
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@ -187,6 +187,10 @@ def build_fragments_list(boot_info):
return res
def write_unsigned_int(stream, val):
stream.write(struct_pack('!I', val))
def write_flv_header(stream):
"""Writes the FLV header to stream"""
# FLV header
@ -198,6 +202,8 @@ def write_flv_header(stream):
def write_metadata_tag(stream, metadata):
"""Writes optional metadata tag to stream"""
FLV_TAG_HEADER_LEN = 11
if metadata:
# Script data
stream.write(b'\x12')
@ -205,9 +211,7 @@ def write_metadata_tag(stream, metadata):
stream.write(struct_pack('!L', len(metadata))[1:])
stream.write(b'\x00\x00\x00\x00\x00\x00\x00')
stream.write(metadata)
# Magic numbers extracted from the output files produced by AdobeHDS.php
# (https://github.com/K-S-V/Scripts)
stream.write(b'\x00\x00\x01\x73')
write_unsigned_int(stream, FLV_TAG_HEADER_LEN + len(metadata))
def _add_ns(prop):