Bug: The url arguments are not passed to the urls variable in play_with_mpv.py

[sebma]

Hi, I tried to load this video : https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092 but it does not work because only a part of the previous url (https://m.facebook.com/story.php?story_fbid=1039169016616268) is passed to mpv.

After some digging in your play_with_mpv.py script and with the help of the ipdb debugger python module, I noticed that your url.query is transformed into a dictionary hence losing the HTTP GET arguements in the play_url :

ipdb> l 45
     40             query = urlparse.parse_qs(url.query)
     41         except:
     42             query = {}
     43         if query.get('mpv_args'):
     44             print("MPV ARGS:", query.get('mpv_args'))
     45         set_trace()
---> 46         if "play_url" in query:
     47             urls = str(query["play_url"][0])
     48             if urls.startswith('magnet:') or urls.endswith('.torrent'):
     49                 pipe = Popen(['peerflix', '-k',  urls, '--', '--force-window'] +
     50                              query.get("mpv_args", []))

ipdb> url.query
'play_url=https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092&mpv_args=--ytdl-format%3Dbestvideo%5Bheight%3C%3D%3F480%5D%2Bbestaudio%2Fbest'
ipdb> urlparse.parse_qs(url.query)
{'play_url': ['https://m.facebook.com/story.php?story_fbid=1039169016616268'], 'id': ['100015695375092'], 'mpv_args': ['--ytdl-format=bestvideo[height<=?480]+bestaudio/best']}
ipdb> urlparse.parse_qs(url.query)['play_url']
['https://m.facebook.com/story.php?story_fbid=1039169016616268']

I used this little trick to fetch the complete url :

ipdb> url.query.split('play_url=')[1].split('&mpv_args')[0]
'https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092'

I'm not sure if that's the right way to do it, but It works :

ipdb> n
> /usr/local/lib/python3.8/dist-packages/play_with_mpv.py(47)do_GET()
     46         if "play_url" in query:
---> 47             urls = str(query["play_url"][0])
     48             if urls.startswith('magnet:') or urls.endswith('.torrent'):

ipdb> 
> /usr/local/lib/python3.8/dist-packages/play_with_mpv.py(48)do_GET()
     47             urls = str(query["play_url"][0])
---> 48             if urls.startswith('magnet:') or urls.endswith('.torrent'):
     49                 pipe = Popen(['peerflix', '-k',  urls, '--', '--force-window'] +

ipdb> urls=url.query.split('play_url=')[1].split('&mpv_args')[0]
ipdb> urls
'https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092'
ipdb> r
127.0.0.1 - - [27/Apr/2021 22:18:12] "GET /?play_url=https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092&mpv_args=--ytdl-format%3Dbestvideo%5Bheight%3C%3D%3F480%5D%2Bbestaudio%2Fbest HTTP/1.1" 200 -
--Return--
None
> /usr/local/lib/python3.8/dist-packages/play_with_mpv.py(54)do_GET()
     53                              query.get("mpv_args", []))
---> 54             self.respond(200, "playing...")
     55         elif "cast_url" in query:

ipdb> Can't load unknown script: /home/sebastien/.config/mpv/scripts/luadoc.css
[auto_profiles] Applying profile seb-C70D-B-311 
Resuming playback. This behavior can be disabled with --no-resume-playback.
 (+) Video --vid=1 (*) (h264 426x240 29.970fps)
 (+) Audio --aid=1 (*) (aac 2ch 48000Hz)
File tags:
 Title: 1039169003282936
mesa: for the --simplifycfg-sink-common option: may only occur zero or one times!
mesa: for the --global-isel-abort option: may only occur zero or one times!
mesa: for the --amdgpu-atomic-optimizations option: may only occur zero or one times!
mesa: for the --structurizecfg-skip-uniform-regions option: may only occur zero or one times!
AO: [pulse] 48000Hz stereo 2ch float
Using hardware decoding (vaapi).
VO: [gpu] 426x240 vaapi[nv12]
AV: 00:02:43 / 00:09:23 (28%) A-V:  0.000 Cache: 399s/18MB
Saving state.

Exiting... (Quit)
ipdb>

Can you please fix this ?

[beew]

Seems like you should file a bug to youtube-dl

youtube-dl -F https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092
[1] 169281
bee@local:~$ [facebook] 1039169016616268: Downloading webpage
ERROR: Unable to download webpage: HTTP Error 404: Not Found (caused by <HTTPError 404: 'Not Found'>); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

[sebma]

@beew Nope. You need to quote this url because it contains the & character, youtube-dl works fine here :

$ youtube-dl -F "https://m.facebook.com/story.php?story_fbid=1039169016616268&id=100015695375092"
[facebook] 1039169016616268: Downloading webpage
[info] Available formats for 1039169016616268:
format code               extension  resolution note
916730542510987a          m4a        audio only DASH audio   49k , m4a_dash container, mp4a.40.5 (48000Hz)
464433831320708v          mp4        426x240    DASH video  110k , mp4_dash container, avc1.42C01E, video only
dash_sd_src               mp4        unknown    
dash_sd_src_no_ratelimit  mp4        unknown    (best)

[beew]

@sebma

Yeh you are right. The link works with ff2mpv on Firefox but not with play-with-mpv on Chrome