so-cool/myslideslive

Extract your SlidesLive presentation.

myslideslive's Issues

"JSON Decode" error

Hi,

I'm having trouble running this code. When in terminal I run e.g.

msl --slide 1074 1075
https://slideslive.com/38956531/beyond-static-papers-rethinking-how-we-share-scientific-understanding-in-ml

, the slides don't download and I get the following error message:

Traceback (most recent call last):
File "/Users/yuan/opt/anaconda3/bin/msl", line 8, in
sys.exit(main())
File "/Users/yuan/opt/anaconda3/lib/python3.8/site-packages/myslideslive/cli.py", line 83, in main
msl = SlidesLive(url)
File "/Users/yuan/opt/anaconda3/lib/python3.8/site-packages/myslideslive/slideslive.py", line 500, in init
self.video_description = get_sl_info(self.video_id)
File "/Users/yuan/opt/anaconda3/lib/python3.8/site-packages/myslideslive/slideslive.py", line 69, in get_sl_info
info_json = json.loads(info_request.content.decode())
File "/Users/yuan/opt/anaconda3/lib/python3.8/json/init.py", line 357, in loads
return _default_decoder.decode(s)
File "/Users/yuan/opt/anaconda3/lib/python3.8/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Users/yuan/opt/anaconda3/lib/python3.8/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Error: Cannot process this XML structure: {xml_root.tag}

mySlidesLive can't download slides from 2022 and later, it seems. When I run msl --slide 2 3 https://slideslive.com/38988636/24-sparsity-on-gpu-tensor-cores, no download occurs and I get the following output:

Traceback (most recent call last):
  File "/opt/homebrew/bin/msl", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/myslideslive/cli.py", line 83, in main
    msl = SlidesLive(url)
          ^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/myslideslive/slideslive.py", line 556, in __init__
    meta = get_slide_metadata(
           ^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/myslideslive/slideslive.py", line 153, in get_slide_metadata
    meta_data_ = parse_slide_xml(meta_content)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/myslideslive/slideslive.py", line 118, in parse_slide_xml
    raise RuntimeError(f'Cannot process this XML structure: {xml_root.tag}.')
RuntimeError: Cannot process this XML structure: Error.

The presentation https://slideslive.com/39004359/optimal-transport-in-learning-control-and-dynamical-systems also yields the same issue.

Connect Error

Traceback (most recent call last):
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/connectionpool.py", line 776, in urlopen
self._prepare_proxy(conn)
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/connectionpool.py", line 1041, in _prepare_proxy
conn.connect()
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/connection.py", line 642, in connect
sock_and_verified = _ssl_wrap_socket_and_match_hostname(
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/connection.py", line 783, in ssl_wrap_socket_and_match_hostname
ssl_sock = ssl_wrap_socket(
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/util/ssl.py", line 469, in ssl_wrap_socket
ssl_sock = ssl_wrap_socket_impl(sock, context, tls_in_tls, server_hostname)
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/site-packages/urllib3/util/ssl.py", line 513, in _ssl_wrap_socket_impl
return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/ssl.py", line 501, in wrap_socket
return self.sslsocket_class._create(
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/ssl.py", line 1074, in _create
self.do_handshake()
File "/home/wanghaochen/anaconda3/envs/video_doc/lib/python3.9/ssl.py", line 1343, in do_handshake
self._sslobj.do_handshake()
ConnectionResetError: [Errno 104] Connection reset by peer
How to fix it, I change the header and proxy

AssertionError: 3 elements constitute a single frame

Thank you for your excellent work. But when I run the script below, some error occurs.

from myslideslive import SlidesLive

msl = SlidesLive('https://slideslive.com/39014617/direct-preference-optimization-your-language-model-is-secretly-a-reward-model')
msl.download_slides(slide=(1074, 1075))
msl.compose_video()

Bug Info:

----> 5 msl.compose_video()

File c:\Users\xxx\miniconda3\envs\agent\lib\site-packages\myslideslive\slideslive.py:687, in SlidesLive.compose_video(self, video_file, slide_folder, last_duration, slide, time)
    682     self.slides_dir = self.video_id
    684 ffmpeg_script, self.start_time, self.end_time = self.get_ffmpeg_script(
    685     slide_folder=self.slides_dir, last_duration=last_duration,
    686     slide=slide, time=time)
--> 687 compose_ffmpeg_video(ffmpeg_script, video_file=self.slides_video)
    689 print(f'\n\nExtracted time segment in seconds:\n    {self.start_time}--{self.end_time}')

File c:\Users\xxx\miniconda3\envs\agent\lib\site-packages\myslideslive\slideslive.py:522, in compose_ffmpeg_video(ffmpeg_script, video_file)
    519     raise RuntimeError(f'{video_file} video file already exists.')
    521 ffmpeg_script_list = ffmpeg_script.split('\n')
--> 522 assert len(ffmpeg_script_list) > 2, '3 elements constitute a single frame'
    523 if len(ffmpeg_script_list) == 3:
    524     img = ffmpeg_script_list[0]

AssertionError: 3 elements constitute a single frame

KeyError: 'image'

I am trying to download this video URL: https://slideslive.com/39007973/zahajeni-digisemestru

But I get error:

Traceback (most recent call last):
  File "D:\Videos\DigiSemestr\download_slides.py", line 4, in <module>
    msl.download_slides(slide=(1, 43))
  File "D:\Videos\DigiSemestr\digisemestr\Lib\site-packages\myslideslive\slideslive.py", line 634, in download_slides
    url_list = self.get_slide_urls(slide_type=slide_type,
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Videos\DigiSemestr\digisemestr\Lib\site-packages\myslideslive\slideslive.py", line 622, in get_slide_urls
    return get_urls(self.video_id, self.video_metadata,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Videos\DigiSemestr\digisemestr\Lib\site-packages\myslideslive\slideslive.py", line 222, in get_urls
    slide_id=s['image']['name'],
             ~^^^^^^^^^
KeyError: 'image'

Handle video slides

SlidesLive allows for video slides (e.g., see here from #14). Version 0.7 offers a workaround by replacing video slides with static images, but this feature needs to be implemented.

For inspiration, look at yt-dlp, which is able to download these slides.

yt-dlp --skip-download https://slideslive.com/39007973/zahajeni-digisemestru
yt-dlp -J https://slideslive.com/39007973/zahajeni-digisemestru

Also, consider adding an alternative CDN:

https://slides.slideslive.com/{video_id}/slides/original/{slide_id}.{format}

Key problem in SlidesLive.py

I tried the given example but it throws the following error:

File "slideslive.py", line 494, in __init__
    self.video_description['slides_xml_url'], approach='xml')
KeyError: 'slides_xml_url'

Any help is appreciated.

UnboundLocalError in ffmpeg_concat_script

The following line results in a UnboundLocalError since the local variable i is referred to before it is assigned:

https://github.com/So-Cool/myslideslive/blob/6960ffbf986bdeb3756fa49a49480a0824e8a412/myslideslive/slideslive.py#LL462C52-L462C56

Permission denied - ffmpeg

When I am trying to use this great library, I get an error. Even when I run it with "sudo" in Powershell.

Error

-vsync is deprecated. Use -fps_mode
[in#0 @ 000001fbe283d100] Error opening input: Permission denied
Error opening input file C:\Users\pegak\AppData\Local\Temp\tmpffh6dbvd.
Error opening input files: Permission denied