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[downloader/ism] Prevent writing the header again when resuming an interrupted download

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This commit is contained in:
Felix S 2021-04-23 09:13:33 +02:00
parent 4d49884c58
commit d4553567d2
1 changed files with 6 additions and 3 deletions
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9
yt_dlp/downloader/ism.py
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@ -221,10 +221,13 @@ class IsmFD(FragmentFD):
self._prepare_and_start_frag_download(ctx)
extra_state = ctx.setdefault('extra_state', {
'ism_track_written': False,
})
fragment_retries = self.params.get('fragment_retries', 0)
skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
track_written = False
frag_index = 0
for i, segment in enumerate(segments):
frag_index += 1
@ -236,11 +239,11 @@ class IsmFD(FragmentFD):
success, frag_content = self._download_fragment(ctx, segment['url'], info_dict)
if not success:
return False
if not track_written:
if not extra_state['ism_track_written']:
tfhd_data = extract_box_data(frag_content, [b'moof', b'traf', b'tfhd'])
info_dict['_download_params']['track_id'] = u32.unpack(tfhd_data[4:8])[0]
write_piff_header(ctx['dest_stream'], info_dict['_download_params'])
track_written = True
extra_state['ism_track_written'] = True
self._append_fragment(ctx, frag_content)
break
except compat_urllib_error.HTTPError as err: