feat: add aria2 (#211)

README.md

@@ -67,9 +67,10 @@ Use the button above! It should work like a magic but with limited functionaliti
 1. clone code
 2. install ffmpeg
 3. install Python 3.6+
-4. pip3 install -r requirements.txt
-5. set environment variables `TOKEN`, `APP_ID` and `APP_HASH`, and more if you like.
-6. `python3 ytdl_bot.py`
+4. install aria2 and add to PATH
+5. pip3 install -r requirements.txt
+6. set environment variables `TOKEN`, `APP_ID` and `APP_HASH`, and more if you like.
+7. `python3 ytdl_bot.py`
 
 ## Docker
 

apk.txt

@@ -1 +1 @@
-ffmpeg vnstat git
+ffmpeg vnstat git aria2

ytdlbot/downloader.py

@@ -190,6 +190,8 @@ def ytdl_download(url, tempdir, bm, **kwargs) -> dict:
     response = {"status": True, "error": "", "filepath": []}
     output = pathlib.Path(tempdir, "%(title).70s.%(ext)s").as_posix()
     ydl_opts = {
+        'external_downloader': 'aria2c',
+        'external_downloader_args': ['--min-split-size=1M', '--max-connection-per-server=16', '--max-concurrent-downloads=16', '--split=16'],
         'progress_hooks': [lambda d: download_hook(d, bm)],
         'outtmpl': output,
         'restrictfilenames': False,