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[fd/fragment] Improve progress calculation (#8241)

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This uses the download speed from all threads and also adds smoothing to speed and eta

Authored by: Grub4K
This commit is contained in:
Simon Sawicki
2023-10-08 02:01:01 +02:00
committed by GitHub
parent 9d7ded6419
commit 1c51c520f7
2 changed files with 128 additions and 29 deletions
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48
yt_dlp/downloader/fragment.py
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@@ -14,6 +14,7 @@ from ..networking import Request
from ..networking.exceptions import HTTPError, IncompleteRead
from ..utils import DownloadError, RetryManager, encodeFilename, traverse_obj
from ..utils.networking import HTTPHeaderDict
from ..utils.progress import ProgressCalculator
class HttpQuietDownloader(HttpFD):
@@ -226,8 +227,7 @@ class FragmentFD(FileDownloader):
resume_len = ctx['complete_frags_downloaded_bytes']
total_frags = ctx['total_frags']
ctx_id = ctx.get('ctx_id')
# This dict stores the download progress, it's updated by the progress
# hook
# Stores the download progress, updated by the progress hook
state = {
'status': 'downloading',
'downloaded_bytes': resume_len,
@@ -237,14 +237,8 @@ class FragmentFD(FileDownloader):
'tmpfilename': ctx['tmpfilename'],
}
start = time.time()
ctx.update({
'started': start,
'fragment_started': start,
# Amount of fragment's bytes downloaded by the time of the previous
# frag progress hook invocation
'prev_frag_downloaded_bytes': 0,
})
ctx['started'] = time.time()
progress = ProgressCalculator(resume_len)
def frag_progress_hook(s):
if s['status'] not in ('downloading', 'finished'):
@@ -259,38 +253,35 @@ class FragmentFD(FileDownloader):
state['max_progress'] = ctx.get('max_progress')
state['progress_idx'] = ctx.get('progress_idx')
time_now = time.time()
state['elapsed'] = time_now - start
state['elapsed'] = progress.elapsed
frag_total_bytes = s.get('total_bytes') or 0
s['fragment_info_dict'] = s.pop('info_dict', {})
# XXX: Fragment resume is not accounted for here
if not ctx['live']:
estimated_size = (
(ctx['complete_frags_downloaded_bytes'] + frag_total_bytes)
/ (state['fragment_index'] + 1) * total_frags)
state['total_bytes_estimate'] = estimated_size
progress.total = estimated_size
progress.update(s.get('downloaded_bytes'))
state['total_bytes_estimate'] = progress.total
else:
progress.update(s.get('downloaded_bytes'))
if s['status'] == 'finished':
state['fragment_index'] += 1
ctx['fragment_index'] = state['fragment_index']
state['downloaded_bytes'] += frag_total_bytes - ctx['prev_frag_downloaded_bytes']
ctx['complete_frags_downloaded_bytes'] = state['downloaded_bytes']
ctx['speed'] = state['speed'] = self.calc_speed(
ctx['fragment_started'], time_now, frag_total_bytes)
ctx['fragment_started'] = time.time()
ctx['prev_frag_downloaded_bytes'] = 0
else:
frag_downloaded_bytes = s['downloaded_bytes']
state['downloaded_bytes'] += frag_downloaded_bytes - ctx['prev_frag_downloaded_bytes']
ctx['speed'] = state['speed'] = self.calc_speed(
ctx['fragment_started'], time_now, frag_downloaded_bytes - ctx.get('frag_resume_len', 0))
if not ctx['live']:
state['eta'] = self.calc_eta(state['speed'], estimated_size - state['downloaded_bytes'])
ctx['prev_frag_downloaded_bytes'] = frag_downloaded_bytes
progress.thread_reset()
state['downloaded_bytes'] = ctx['complete_frags_downloaded_bytes'] = progress.downloaded
state['speed'] = ctx['speed'] = progress.speed.smooth
state['eta'] = progress.eta.smooth
self._hook_progress(state, info_dict)
ctx['dl'].add_progress_hook(frag_progress_hook)
return start
return ctx['started']
def _finish_frag_download(self, ctx, info_dict):
ctx['dest_stream'].close()
@@ -500,7 +491,6 @@ class FragmentFD(FileDownloader):
download_fragment(fragment, ctx_copy)
return fragment, fragment['frag_index'], ctx_copy.get('fragment_filename_sanitized')
self.report_warning('The download speed shown is only of one thread. This is a known issue')
with tpe or concurrent.futures.ThreadPoolExecutor(max_workers) as pool:
try:
for fragment, frag_index, frag_filename in pool.map(_download_fragment, fragments):