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Sur d’autres sites (8869)

  • Extract just the audio link from a youtube video without converting

    19 janvier 2017, par kamron shaw

    I know there are hundreds of sites to convert youtube video to mp3. Most of them do it by first downloading the video and then converting it to mp3(or any other audio format) on their server using youtube-dl, ffmpeg or similar programs.

    What I want to know is, is there any way I can just extract the audio link for any youtube video ? I don’t know if it’s possible but I saw a couple of websites doing it .

    First Website : Openaisearch.com
    This website simply gives a download link for the audio(getting it from youtube videos). I searched for a song and saw the download url, it looked something like this :

    https://redirector.googlevideo.com/videoplayback?source=youtube&requiressl=yes&clen=3814013&upn=dzwY9aUVYME&lmt=1469875393441562&expire=1484854959&mime=audio%2Fmp4&nh=IgpwcjAxLnNlYTA5Kg01Mi45NS4yMTYuMTAy&itag=140...........

    I believe that this is not done by first downloading and converting the video to audio format(Correct me if I am wrong).
    Although the file which gets downloaded after using this link is without any extension, but adding ".m4a" at the end of downloaded file does the work.

    Second Website : http://keepvid.com/ ?url=https ://www.youtube.com/watch?v=PT2_F-1esPk

    Again similar website with similar audio link. You can check by visiting the URL and see link of audio files.

    Any idea how these websites get that "googlevideo.com" link ? Do they scrap the youtube video links or something ?

    Thanks.

  • Record and stream desktop to Youtube by ffmpeg with HD resolution

    1er juillet 2021, par Do Ngoc Tuan

    I want to record and stream desktop to Youtube live by FFmpeg. But the output resolution is very low, maximum 360.
What options I need to change ?

    



    ffmpeg  -framerate 30 -f x11grab -i :1 -f pulse -i default -c:v libx264 -s 1920x1080 -r 60 -b:v 5000k  -crf 10 -vf format=yuv420p -c:a aac -b:a 128k -f flv rtmp://a.rtmp.youtube.com/live2/stream_key


    


  • Crackling noise and other audio defects when live streaming (only) on YouTube

    7 août 2020, par almosnow

    I am using ffmpeg to transcode and stream a live video, using rtmp. Everything works fine BUT the audio that comes out on the YouTube end has cracks and pops, like what you would expect to hear when your sound card's buffer is saturated.

    


    What's weird is that I am sending the exact same information to different services, and only YouTube seems to have a problem with it. For this I am using ffmpeg's tee, like this :

    


    ffmpeg -i - -deinterlace -map 0 -flags +global_header 
       -f tee "[f=flv:onfail=ignore]rtmp://twitch/key|[f=flv:onfail=ignore]rtmp://youtube/key|out.flv"'


    


    So, the twitch end sounds great, the output file that I'm rendering also sounds good. Only on YouTube it sounds really bad.

    


    I thought it may be the audio codec, the audio settings I'm using are -c:a aac -b:a 128k -ar 44100 ; but I've tried different things (using an mp3 codec, different bitrates) and it always sounds like that. Also AAC seems to be supported according to their own (YT) guidelines.

    


    What could it be ?

    


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