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[YoutubeDL] Add declarative version of progress hooks

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This commit is contained in:
Philipp Hagemeister 2014-12-15 01:26:18 +01:00
parent 4f026fafbc
commit 71b640cc5b
3 changed files with 32 additions and 18 deletions
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9
README.md
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@ -537,7 +537,7 @@ # EMBEDDING YOUTUBE-DL
Most likely, you'll want to use various options. For a list of what can be done, have a look at [youtube_dl/YoutubeDL.py](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/YoutubeDL.py#L69). For a start, if you want to intercept youtube-dl's output, set a `logger` object.
Here's a more complete example of a program that only outputs errors, and downloads/converts the video as mp3:
Here's a more complete example of a program that outputs only errors (and a short message after the download is finished), and downloads/converts the video to an mp3 file:
import youtube_dl
@ -553,6 +553,12 @@ # EMBEDDING YOUTUBE-DL
def error(self, msg):
print(msg)
def my_hook(d):
if d['status'] == 'finished':
print('Done downloading, now converting ...')
ydl_opts = {
'format': 'bestaudio/best',
'postprocessors': [{
@ -561,6 +567,7 @@ # EMBEDDING YOUTUBE-DL
'preferredquality': '64',
}],
'logger': MyLogger(),
'progress_hooks': [my_hook],
}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc'])

22
youtube_dl/YoutubeDL.py
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@ -182,10 +182,27 @@ class YoutubeDL(object):
Pass in 'in_playlist' to only show this behavior for
playlist items.
postprocessors: A list of dictionaries, each with an entry
key: The name of the postprocessor. See
* key: The name of the postprocessor. See
youtube_dl/postprocessor/__init__.py for a list.
as well as any further keyword arguments for the
postprocessor.
progress_hooks: A list of functions that get called on download
progress, with a dictionary with the entries
* filename: The final filename
* status: One of "downloading" and "finished"
The dict may also have some of the following entries:
* downloaded_bytes: Bytes on disk
* total_bytes: Size of the whole file, None if unknown
* tmpfilename: The filename we're currently writing to
* eta: The estimated time in seconds, None if unknown
* speed: The download speed in bytes/second, None if
unknown
Progress hooks are guaranteed to be called at least once
(with status "finished") if the download is successful.
The following parameters are not used by YoutubeDL itself, they are used by
the FileDownloader:
@ -273,6 +290,9 @@ def __init__(self, params=None, auto_init=True):
pp = pp_class(self, **compat_kwargs(pp_def))
self.add_post_processor(pp)
for ph in self.params.get('progress_hooks', []):
self.add_progress_hook(ph)
def warn_if_short_id(self, argv):
# short YouTube ID starting with dash?
idxs = [

17
youtube_dl/downloader/common.py
View File

@ -305,19 +305,6 @@ def _hook_progress(self, status):
ph(status)
def add_progress_hook(self, ph):
""" ph gets called on download progress, with a dictionary with the entries
* filename: The final filename
* status: One of "downloading" and "finished"
It can also have some of the following entries:
* downloaded_bytes: Bytes on disks
* total_bytes: Total bytes, None if unknown
* tmpfilename: The filename we're currently writing to
* eta: The estimated time in seconds, None if unknown
* speed: The download speed in bytes/second, None if unknown
Hooks are guaranteed to be called at least once (with status "finished")
if the download is successful.
"""
# See YoutubeDl.py (search for progress_hooks) for a description of
# this interface
self._progress_hooks.append(ph)