如何仅从YouTube流式传输视频的声音？

Question

我想只从youtube传输声音.我需要这个用于IOS,但其他人可以.我搜索了stackoverflow,但我找不到.因为我不想使用其他软件,所以我想直接通过代码直接传输youtube视频的声音.它也应该在背景上工作.

Answer 1

Flashgot(适用于Firefox)有一种方法只能下载Youtube视频的音频.它公开了音频的链接,如下所示:

https://r3---sn-p5qlsu7d.googlevideo.com/videoplayback?id=887ce37c617a3225&itag=141&source=youtube&requiressl=yes&gcr=ca&ratebypass=yes&mime=audio%2Fmp4&gir=yes&clen=4012348&lmt=1409362978343745&dur=125.828&signature=0A00B9B16BB6EF3192DF33EEF9B2AB67F66F501F.0B649D407144B914A7CC7BE00E795B5BD1B9D932&upn=VFAbXgDGSU8&key = CMS1&FEXP = 900718%2C924231%2C924637%2C927622%2C930809%2C931354%2C932404%2C9405454%2C941004%2C943917%2C945066%2C947209%2C947218%2C948124%2C952302%2C952605%2C952901%2C955301%2C957103%2C957105%2C957201&sver = 3&IP = 24.235.37.181 &ipbits = 0&到期= 1419930614&sparams = CLEN,DUR,到期,GCR,GIR,ID,IP,ipbits,ITAG,LMT,MIME,毫米,MS,MV,ratebypass,requiressl,源&cmbypass = YES&REQ_ID = 3eb2c618c54ca3ee&redirect_counter = 2&cms_redirect = YES&毫米= 26&MS = TSU&MT = 1419909012&MV =米

好的,这是一个非常大的链接.这是切成碎片的相同链接:

https://r3---sn-p5qlsu7d.googlevideo.com/videoplayback?id=887ce37c617a3225
&itag=141
&source=youtube
&requiressl=yes
&gcr=ca
&ratebypass=yes
&mime=audio/mp4 #Here's where audio only is specified.
&gir=yes
&clen=4012348
&lmt=1409362978343745
&dur=125.828
&signature=0A00B9B16BB6EF3192DF33EEF9B2AB67F66F501F.0B649D407144B914A7CC7BE00E795B5BD1B9D932
&upn=VFAbXgDGSU8
&key=cms1
&fexp=900718,924231,924637,927622,930809,931354,932404,9405454,941004,943917,945066,947209,947218,948124,952302,952605,952901,955301,957103,957105,957201
&sver=3
&ip=24.235.37.181 #Oh, look. My IP address.
&ipbits=0
&expire=1419930614
&sparams=clen,dur,expire,gcr,gir,id,ip,ipbits,itag,lmt,mime,mm,ms,mv,ratebypass,requiressl,source
&cmbypass=yes
&req_id=3eb2c618c54ca3ee
&redirect_counter=2
&cms_redirect=yes
&mm=26
&ms=tsu
&mt=1419909012
&mv=m

很有意思.这使得Flashgot只能下载音频并跳过视频,从而节省了带宽.我错过了详细信息,比如Flashgot如何创建此链接,但如果Flashgot有办法,那么其他HTTP客户端也可以这样做.

Answer 2

我会使用 MPMoviePlayerController 并隐藏它的视图。