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[downloader/rtmp] Gracefully handle live streams interrupted by user

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Sergey M․ 2018-05-26 22:10:08 +07:00
parent 68217024e8
commit ddd8486a44
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GPG Key ID: 2C393E0F18A9236D
1 changed files with 66 additions and 53 deletions
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119
youtube_dl/downloader/rtmp.py
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@ -24,71 +24,78 @@ class RtmpFD(FileDownloader):
def real_download(self, filename, info_dict): def real_download(self, filename, info_dict):
def run_rtmpdump(args): def run_rtmpdump(args):
start = time.time() start = time.time()
resume_percent = None
resume_downloaded_data_len = None
proc = subprocess.Popen(args, stderr=subprocess.PIPE) proc = subprocess.Popen(args, stderr=subprocess.PIPE)
cursor_in_new_line = True cursor_in_new_line = True
proc_stderr_closed = False
while not proc_stderr_closed: def dl():
# read line from stderr resume_percent = None
line = '' resume_downloaded_data_len = None
while True: proc_stderr_closed = False
char = proc.stderr.read(1) while not proc_stderr_closed:
if not char: # read line from stderr
proc_stderr_closed = True line = ''
break while True:
if char in [b'\r', b'\n']: char = proc.stderr.read(1)
break if not char:
line += char.decode('ascii', 'replace') proc_stderr_closed = True
if not line: break
# proc_stderr_closed is True if char in [b'\r', b'\n']:
continue break
mobj = re.search(r'([0-9]+\.[0-9]{3}) kB / [0-9]+\.[0-9]{2} sec \(([0-9]{1,2}\.[0-9])%\)', line) line += char.decode('ascii', 'replace')
if mobj: if not line:
downloaded_data_len = int(float(mobj.group(1)) * 1024) # proc_stderr_closed is True
percent = float(mobj.group(2)) continue
if not resume_percent: mobj = re.search(r'([0-9]+\.[0-9]{3}) kB / [0-9]+\.[0-9]{2} sec \(([0-9]{1,2}\.[0-9])%\)', line)
resume_percent = percent
resume_downloaded_data_len = downloaded_data_len
time_now = time.time()
eta = self.calc_eta(start, time_now, 100 - resume_percent, percent - resume_percent)
speed = self.calc_speed(start, time_now, downloaded_data_len - resume_downloaded_data_len)
data_len = None
if percent > 0:
data_len = int(downloaded_data_len * 100 / percent)
self._hook_progress({
'status': 'downloading',
'downloaded_bytes': downloaded_data_len,
'total_bytes_estimate': data_len,
'tmpfilename': tmpfilename,
'filename': filename,
'eta': eta,
'elapsed': time_now - start,
'speed': speed,
})
cursor_in_new_line = False
else:
# no percent for live streams
mobj = re.search(r'([0-9]+\.[0-9]{3}) kB / [0-9]+\.[0-9]{2} sec', line)
if mobj: if mobj:
downloaded_data_len = int(float(mobj.group(1)) * 1024) downloaded_data_len = int(float(mobj.group(1)) * 1024)
percent = float(mobj.group(2))
if not resume_percent:
resume_percent = percent
resume_downloaded_data_len = downloaded_data_len
time_now = time.time() time_now = time.time()
speed = self.calc_speed(start, time_now, downloaded_data_len) eta = self.calc_eta(start, time_now, 100 - resume_percent, percent - resume_percent)
speed = self.calc_speed(start, time_now, downloaded_data_len - resume_downloaded_data_len)
data_len = None
if percent > 0:
data_len = int(downloaded_data_len * 100 / percent)
self._hook_progress({ self._hook_progress({
'status': 'downloading',
'downloaded_bytes': downloaded_data_len, 'downloaded_bytes': downloaded_data_len,
'total_bytes_estimate': data_len,
'tmpfilename': tmpfilename, 'tmpfilename': tmpfilename,
'filename': filename, 'filename': filename,
'status': 'downloading', 'eta': eta,
'elapsed': time_now - start, 'elapsed': time_now - start,
'speed': speed, 'speed': speed,
}) })
cursor_in_new_line = False cursor_in_new_line = False
elif self.params.get('verbose', False): else:
if not cursor_in_new_line: # no percent for live streams
self.to_screen('') mobj = re.search(r'([0-9]+\.[0-9]{3}) kB / [0-9]+\.[0-9]{2} sec', line)
cursor_in_new_line = True if mobj:
self.to_screen('[rtmpdump] ' + line) downloaded_data_len = int(float(mobj.group(1)) * 1024)
proc.wait() time_now = time.time()
speed = self.calc_speed(start, time_now, downloaded_data_len)
self._hook_progress({
'downloaded_bytes': downloaded_data_len,
'tmpfilename': tmpfilename,
'filename': filename,
'status': 'downloading',
'elapsed': time_now - start,
'speed': speed,
})
cursor_in_new_line = False
elif self.params.get('verbose', False):
if not cursor_in_new_line:
self.to_screen('')
cursor_in_new_line = True
self.to_screen('[rtmpdump] ' + line)
try:
dl()
finally:
proc.wait()
if not cursor_in_new_line: if not cursor_in_new_line:
self.to_screen('') self.to_screen('')
return proc.returncode return proc.returncode
@ -163,7 +170,13 @@ class RtmpFD(FileDownloader):
RD_INCOMPLETE = 2 RD_INCOMPLETE = 2
RD_NO_CONNECT = 3 RD_NO_CONNECT = 3
retval = run_rtmpdump(args) try:
retval = run_rtmpdump(args)
except KeyboardInterrupt:
if not info_dict.get('is_live'):
raise
retval = RD_SUCCESS
self.to_screen('\n[rtmpdump] Interrupted by user')
if retval == RD_NO_CONNECT: if retval == RD_NO_CONNECT:
self.report_error('[rtmpdump] Could not connect to RTMP server.') self.report_error('[rtmpdump] Could not connect to RTMP server.')