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auto Best Quality not working #2130
youtube-dl is not downloading the best quality video, even if I had set it to download the 2K one.
Tried the userscript YouTube Links, and got funny result:
It can detect the 2K M4V URL, but the download would stop at 14M. The video itself cannot be played in the Flash player, and YouTube Links cannot find the audio link.
Example 2K URL found:
http://r15---sn-vgqsenel.googlevideo.com/videoplayback?algorithm=throttle-factor&burst=40&signature=391D072D77FF4E88D0FDAB18EBB9BA2CC488F83A.8445B6BB6A3E4E19B8CA9145B336D58F339F20FD&sver=3&key=yt5&ip=(*deleted on purpose*)&ipbits=0&upn=D3C4scmHvVA&factor=1.25&id=8b90a837ab413fcc&dur=212.200&gir=yes&lmt=1371070393235282&clen=128095994&mv=m&mt=1391072669&ms=au&source=youtube&itag=138&expire=1391099340&fexp=900225%2C939100%2C916623%2C936910%2C936913&title=%25E3%2580%25902K%25E7%2594%25BB%25E8%25B3%25AA%25E3%2580%2591%25E5%25B9%25BB%25E6%2583%25B3%25E4%25B8%2587%25E8%258F%25AF%25E9%258F%25A1PV%25E3%2580%258C%25E8%258F%25AF%25E9%25B3%25A5%25E9%25A2%25A8%25E6%259C%2588%25E3%2580%258D2048%25C3%25971152'
Basically the problem is that for that resolutions, the file we can get has only the video, the audio is downloaded in another file (this is called DASH, just search on the bug tracker for more info).