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Audio download performance compared to youtube-dl #64

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ghost opened this issue Jun 28, 2014 · 6 comments
Closed

Audio download performance compared to youtube-dl #64

ghost opened this issue Jun 28, 2014 · 6 comments

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@ghost
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ghost commented Jun 28, 2014

youtube-dl, the Python equivalent version for downloading YouTube videos, takes a few seconds to download a video with the same id for audio extraction. YoutubeExtractor spends about 65 seconds on my computer. 99% of the time was spent in VideoDownloader.Execute() method.

youtube-dl: http://rg3.github.io/youtube-dl/
Usage command: youtube-dl --extract-audio --audio-format mp3 http://www.youtube.com/watch?v=O3UBOOZw-FE

The link used by youtube-dl (ip removed):

https://r18---sn-5hnezne7.googlevideo.com/videoplayback?signature=0714AF3FEC2ACC7BCBF90995A77F1DABBE446036.CEFE593E7BE214EDF987D14EC25E1ED93D7DBFB4&sparams=clen%2Cdur%2Cgir%2Cid%2Cip%2Cipbits%2Citag%2Clmt%2Cpbr%2Cpfa%2Cpm_type%2Crequiressl%2Csource%2Cupn%2Cexpire&fexp=902408%2C910207%2C924222%2C929203%2C930008%2C931331%2C934024%2C934030%2C948201%2C948701&mws=yes&ipbits=0&ip=xx.xxx.xx.xx&lmt=1392296545675827&pbr=yes&itag=140&pfa=10s&id=o-AGQXdDWfgzh5SV113D_PjE7SBZBpEGAHjagbstIDtGku&mv=m&upn=acy4qp28vVg&pm_type=static&key=yt5&clen=4116948&requiressl=yes&source=youtube&dur=259.181&expire=1404003600&sver=3&mt=1403981504&gir=yes&ms=au&ratebypass=yes

The link used by YoutubeExtractor (ip removed):

http://r3---sn-5hn7sn7k.googlevideo.com/videoplayback?sver=3&expire=1404000000&fexp=902408,924222,930008,931021,933906,934024,934030,938633,948113&ms=au&signature=D9D9A9F3363A26B2B04141FA720CC25D083D1D65.9C530F348751D7AF6947B490CE9331E41206F9E3&id=o-AIPsuFPbPdjuhBQ29RZaDLfkvetVnk_wVx_YFGNANi3t&itag=5&mv=m&ipbits=0&mws=yes&sparams=id,ip,ipbits,itag,source,upn,expire&source=youtube&upn=F7SdoBYczJ4&mt=1403977932&key=yt5&ip=xx.xxx.xx.xx
@j-mie
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j-mie commented Oct 24, 2014

+1 for this

@j-mie
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j-mie commented Oct 24, 2014

Looks to do with the "&ratebypass=yes" on the end of the link

@ghost
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ghost commented Dec 23, 2014

Just tested, throwing '&ratebypass=yes' to the end of the download url drastically improves performance

@ghost
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ghost commented Dec 23, 2014

I made a small test program to compare the performance
For a 4.6mb file (the .mp4 at 128kbps of this video: https://www.youtube.com/watch?v=Qpl7XU9sLfs) the difference is huge. Average is about 1s with the extra query parameter and about 77 without it.
screen shot 2014-12-23 at 2 46 39 pm

@ghost ghost mentioned this issue Dec 23, 2014
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@ghost
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ghost commented Dec 23, 2014

I submitted a pull request with the change here #94

@flagbug
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flagbug commented Jan 16, 2015

Should be fixed with version 0.10.5

@flagbug flagbug closed this as completed Jan 16, 2015
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@flagbug @j-mie