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[f4m] Tolerate missed fragments on live streams

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This commit is contained in:
Antti Ajanki 2015-02-23 21:56:35 +02:00
parent c4f8c453ae
commit 5eaaeb7c31
1 changed files with 30 additions and 13 deletions
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19
youtube_dl/downloader/f4m.py
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@ -11,6 +11,7 @@
from .http import HttpFD
from ..compat import (
compat_urlparse,
compat_urllib_error,
)
from ..utils import (
struct_pack,
@ -389,6 +390,7 @@ def frag_progress_hook(s):
if akamai_pv:
url += '?' + akamai_pv.strip(';')
frag_filename = '%s-%s' % (tmpfilename, name)
try:
success = http_dl.download(frag_filename, {'url': url})
if not success:
return False
@ -400,11 +402,26 @@ def frag_progress_hook(s):
if box_type == b'mdat':
dest_stream.write(box_data)
break
if live:
os.remove(frag_filename)
else:
frags_filenames.append(frag_filename)
except (compat_urllib_error.HTTPError, ) as err:
if live and (err.code == 404 or err.code == 410):
# We didn't keep up with the live window. Continue
# with the next available fragment.
msg = 'Fragment %d unavailable' % frag_i
self.report_warning(msg)
fragments_list = []
else:
raise
if not fragments_list and live and bootstrap_url:
fragments_list = self._update_live_fragments(bootstrap_url, frag_i)
self.to_screen('Updated available fragments: %d' % len(fragments_list))
total_frags += len(fragments_list)
if fragments_list and (fragments_list[0][1] > frag_i + 1):
msg = 'Missed %d fragments' % (fragments_list[0][1] - (frag_i + 1))
self.report_warning(msg)
dest_stream.close()