Lomanic
/
NewLeaf
mirror of https://git.sr.ht/~cadence/NewLeaf
1
0
Fork 0
Code Issues Releases Wiki Activity

Add DASH manifest endpoint

This commit is contained in:
Cadence Ember 2020-08-09 20:38:40 +12:00
parent cf37afec2b
commit 831d67e990
No known key found for this signature in database
GPG Key ID: 128B99B1B74A6412
3 changed files with 98 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
README.md
View File

@ -13,6 +13,7 @@ These endpoints are somewhat implemented:
- `/api/v1/channels/{part}/{ucid}`
- `/api/v1/search?q={search}`
- `/vi/{id}/{file}`
- `/api/manifest/dash/id/{id}`
## The future

109
index.py
View File

@ -7,6 +7,8 @@ import re
import json
import traceback
import requests
import xml.etree.ElementTree as ET
from cachetools import TTLCache
ytdl_opts = {
"quiet": True,
@ -25,7 +27,14 @@ def length_text_to_seconds(text):
return sum([int(x) * 60**(len(s)-i-1) for i, x in enumerate(s)])
class Second(object):
def __init__(self):
self.video_cache = TTLCache(maxsize=50, ttl=300)
def _cp_dispatch(self, vpath):
if vpath[:4] == ["api", "manifest", "dash", "id"]:
vpath[:4] = ["manifest"]
return self
if vpath[:2] == ["api", "v1"]:
endpoints = [
["channels", 1, 2],
@ -42,37 +51,45 @@ class Second(object):
@cherrypy.expose
@cherrypy.tools.json_out()
def videos(self, id):
if id in self.video_cache:
return self.video_cache[id]
try:
info = ytdl_save.extract_info(id, download=False)
year = int(info["upload_date"][:4])
month = int(info["upload_date"][4:6])
day = int(info["upload_date"][6:8])
published = int(datetime.datetime(year, month, day).timestamp())
# Adaptive formats have either audio or video, format streams have both
def format_is_adaptive(format):
return format["acodec"] == "none" or format["vcodec"] == "none"
# just the "type" field
def format_type(format):
sense = "audio"
def format_mime(format):
sense = "video" if format["vcodec"] != "none" else "audio"
return "{}/{}".format(sense, format["ext"])
def format_codecs(format):
codecs = []
if format["vcodec"] != "none":
sense = "video"
codecs.append(format["vcodec"])
if format["acodec"] != "none":
codecs.append(format["acodec"])
return '{}/{}; codecs="{}"'.format(sense, format["ext"], ", ".join(codecs))
return codecs
def format_type(format):
return '{}; codecs="{}"'.format(format_mime(format), ", ".join(format_codecs(format)))
result = {
"type": "video",
"title": info["title"],
"videoId": info["id"],
"videoThumbnails": None,
"videoThumbnails": [],
"storyboards": None,
"description": info["description"],
"descriptionHtml": None,
"published": int(datetime.datetime(year, month, day).timestamp()),
"published": published,
"publishedText": None,
"keywords": None,
"viewCount": info["view_count"],
@ -107,6 +124,8 @@ class Second(object):
"url": format["url"],
"itag": format["format_id"],
"type": format_type(format),
"second__mime": format_mime(format),
"second__codecs": format_codecs(format),
"clen": str(format["filesize"]),
"lmt": None,
"projectionType": None,
@ -122,6 +141,7 @@ class Second(object):
"url": format["url"],
"itag": format["format_id"],
"type": format_type(format),
"second__mime": format_mime(format),
"quality": None,
"fps": format["fps"],
"container": format["ext"],
@ -144,11 +164,12 @@ class Second(object):
if len(possible_files) == 1:
filename = possible_files[0]
with open(filename) as file:
r = re.compile(r"""^\s*window\["ytInitialData"\] = (\{.*\});\n?$""")
r_yt_intial_data = re.compile(r"""^\s*window\["ytInitialData"\] = (\{.*\});\n?$""")
r_yt_player_config = re.compile(r"""^\s*[^"]+"cfg"[^"]+ytplayer\.config = (\{.*\});ytplayer\.web_player_context_config = {".""")
for line in file:
match_result = re.search(r, line)
if match_result:
yt_initial_data = json.loads(match_result.group(1))
m_yt_initial_data = re.search(r_yt_intial_data, line)
if m_yt_initial_data:
yt_initial_data = json.loads(m_yt_initial_data.group(1))
views = yt_initial_data["contents"]["twoColumnWatchNextResults"]["results"]["results"]["contents"][0]\
["videoPrimaryInfoRenderer"]["viewCount"]["videoViewCountRenderer"]
result["second__viewCountText"] = views["viewCount"]["simpleText"]
@ -208,6 +229,24 @@ class Second(object):
"viewCount": get_view_count(r)
} for r in [get_useful_recommendation_data(r) for r in recommendations if get_useful_recommendation_data(r)])
m_yt_player_config = re.search(r_yt_player_config, line)
if m_yt_player_config:
yt_player_config = json.loads(m_yt_player_config.group(1))
player_response = json.loads(yt_player_config["args"]["player_response"])
itagDict = {}
for f in player_response["streamingData"]["adaptiveFormats"]:
itagDict[str(f["itag"])] = {
"initRange": f["initRange"],
"indexRange": f["indexRange"],
"audioChannels": f["audioChannels"] if "audioChannels" in f else None
}
for f in result["adaptiveFormats"]:
if f["itag"] in itagDict:
i = itagDict[f["itag"]]
f["init"] = "{}-{}".format(i["initRange"]["start"], i["initRange"]["end"])
f["index"] = "{}-{}".format(i["indexRange"]["start"], i["indexRange"]["end"])
f["second__audioChannels"] = i["audioChannels"]
except Exception:
traceback.print_exc()
@ -215,7 +254,7 @@ class Second(object):
for file in possible_files:
os.unlink(file)
# return recommendations
self.video_cache[id] = result
return result
except youtube_dl.DownloadError:
@ -224,6 +263,50 @@ class Second(object):
"identifier": "VIDEO_DOES_NOT_EXIST"
}
@cherrypy.expose
@cherrypy.tools.encode()
def manifest(self, id):
id = id.split(".")[0] # remove extension if present
video = self.videos(id)
if "error" in video:
return video
adaptation_sets_dict = {}
for f in video["adaptiveFormats"]:
mime = f["second__mime"]
if not mime in adaptation_sets_dict:
adaptation_sets_dict[mime] = []
ads = adaptation_sets_dict[mime]
representation_attributes = {"id": f["itag"], "codecs": ", ".join(f["second__codecs"]), "bandwidth": f["bitrate"]}
if f["second__width"]:
representation_attributes["width"] = str(f["second__width"])
representation_attributes["height"] = str(f["second__height"])
representation_attributes["startWithSAP"] = "1"
representation_attributes["maxPlayoutRate"] = "1"
representation_attributes["frameRate"] = str(f["fps"])
representation = ET.Element("Representation", representation_attributes)
if f["second__audioChannels"]:
ET.SubElement(representation, "AudioChannelConfiguration", {"schemeIdUri": "urn:mpeg:dash:23003:3:audio_channel_configuration:2011", "value": str(f["second__audioChannels"])})
ET.SubElement(representation, "BaseURL").text = f["url"]
et_segment_base = ET.SubElement(representation, "SegmentBase", {"indexRange": f["index"]})
ET.SubElement(et_segment_base, "Initialization", {"range": f["init"]})
ads.append(representation)
s_meta = B'<?xml version="1.0" encoding="UTF-8"?>'
et_mpd = ET.Element("MPD", {"xmlns": "urn:mpeg:dash:schema:mpd:2011", "profiles": "urn:mpeg:dash:profile:full:2011", "minBufferTime": "PT1.5S", "type": "static", "mediaPresentationDuration": "PT282S"})
et_period = ET.SubElement(et_mpd, "Period")
for (index, key) in list(enumerate(adaptation_sets_dict)):
ads = adaptation_sets_dict[key]
et_adaptation_set = ET.SubElement(et_period, "AdaptationSet", {"id": str(index), "mimeType": key, "startWithSAP": "1", "subsegmentAlignment": "true"})
for representation in ads:
et_adaptation_set.append(representation)
manifest = s_meta + ET.tostring(et_mpd)
cherrypy.response.headers["content-type"] = "application/dash+xml"
return manifest
@cherrypy.expose
@cherrypy.tools.json_out()
def channels(self, *suffix):
@ -290,7 +373,7 @@ class Second(object):
@cherrypy.expose
@cherrypy.tools.json_out()
def search(self, *, q, sort_by):
def search(self, *, q, sort_by, page, date, duration, type):
info = ytdl.extract_info("ytsearchall:{}".format(q), download=False)
return list({
"type": "video",

1
requirements.txt
View File

@ -1,2 +1,3 @@
cherrypy
youtube-dl
cachetools