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• external-downloader option not working as expected in youtube-dl

  31 mars 2021, par Coder_H

  I was trying to download specific timestamps from youtube using youtube-dl as mentioned as mentioned here in the comments

  


  youtube-dl -v "https://www.youtube.com/watch?v=1I-3vJSC-Vo" -x -k --external-downloader ffmpeg --external-downloader-args "-ss 0:30 -to 0:35"


  


  I got the following error :

  


  [youtube] 1I-3vJSC-Vo: Downloading webpage
[download] Destination: ONE MINUTE OF PURE SATISFACTION _ Compilation 1-1I-3vJSC-Vo.f398.mp4
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/incl
ude/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable
-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libf
reetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-lib
openmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-lib
soxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal -
-enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-l
ibopencv --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incd
ir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-lad
spa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig -
-enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy
--enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enabl
e-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --ena
ble-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0
r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb
--enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Option to (record or transcode stop time) cannot be applied to input url https://r7---sn-gwpa-civk.googlevideo.com/videoplayback?exp
ire=1617150322&ei=Em1jYPnzG7qr3LUP6eGr2A0&ip=2409%3A4043%3A609%3A4b92%3Ad9f7%3Ad14%3A44f9%3A8525&id=o-AALoNXBA9D9WAuCZn-2a9-JjLoqCOC
_11Lo7_9LdU7g0&itag=398&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278%2C394%2C395%2C396%2C397%2C398&source=youtub
e&requiressl=yes&mh=05&mm=31%2C29&mn=sn-gwpa-civk%2Csn-gwpa-cvhd&ms=au%2Crdu&mv=m&mvi=7&pcm2cms=yes&pl=38&initcwndbps=148750&vprv=1&
mime=video%2Fmp4&ns=_3yx5zxNR1CYgHJamv8F-s4F&gir=yes&clen=4733883&dur=59.920&lmt=1578997687942906&mt=1617128452&fvip=7&keepalive=yes
&fexp=24001373%2C24007246&beids=9466588&c=WEB&txp=5431432&n=HoSSxcQKm_nNAUWgVTbz2&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2C
requiressl%2Cvprv%2Cmime%2Cns%2Cgir%2Cclen%2Cdur%2Clmt&sig=AOq0QJ8wRQIhAN-MjT3t_kpgwkOrBiw8f-0q5iDINPxu4bjfgZS66nNGAiBOLta-kt_AuaqGH
D-hJiElj9oNALl35IsBseYOR5AU4A%3D%3D&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpcm2cms%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRAIgIf334bMxslsq
Lxpnn2BATGGV6GWoWoJQQuMMgQL-NaMCICojD-uZ1VkyxIOQrfOwlLAEJ-gCe1skejtRBk-oHejU -- you are trying to apply an input option to an output
 file or vice versa. Move this option before the file it belongs to.
Error parsing options for input file https://r7---sn-gwpa-civk.googlevideo.com/videoplayback?expire=1617150322&ei=Em1jYPnzG7qr3LUP6e
Gr2A0&ip=2409%3A4043%3A609%3A4b92%3Ad9f7%3Ad14%3A44f9%3A8525&id=o-AALoNXBA9D9WAuCZn-2a9-JjLoqCOC_11Lo7_9LdU7g0&itag=398&aitags=133%2
C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278%2C394%2C395%2C396%2C397%2C398&source=youtube&requiressl=yes&mh=05&mm=31%2C29&mn
=sn-gwpa-civk%2Csn-gwpa-cvhd&ms=au%2Crdu&mv=m&mvi=7&pcm2cms=yes&pl=38&initcwndbps=148750&vprv=1&mime=video%2Fmp4&ns=_3yx5zxNR1CYgHJa
mv8F-s4F&gir=yes&clen=4733883&dur=59.920&lmt=1578997687942906&mt=1617128452&fvip=7&keepalive=yes&fexp=24001373%2C24007246&beids=9466
588&c=WEB&txp=5431432&n=HoSSxcQKm_nNAUWgVTbz2&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cns%2Cgir%
2Cclen%2Cdur%2Clmt&sig=AOq0QJ8wRQIhAN-MjT3t_kpgwkOrBiw8f-0q5iDINPxu4bjfgZS66nNGAiBOLta-kt_AuaqGHD-hJiElj9oNALl35IsBseYOR5AU4A%3D%3D&
lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpcm2cms%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRAIgIf334bMxslsqLxpnn2BATGGV6GWoWoJQQuMMgQL-NaMCICoj
D-uZ1VkyxIOQrfOwlLAEJ-gCe1skejtRBk-oHejU.
Error opening input files: Invalid argument


ERROR: ffmpeg exited with code 1



  


  Why am I facing this error despite using the same format as mentioned in the link ?

  


• 360 video - FFMPEG change "zoom" for Youtube

  20 avril 2020, par Jedeme Vlakem

  I can change angle of 360 video :

  



  ffmpeg -i 15.mp4 -vf  v360=e:e:yaw=60:pitch=0:roll=0 15_exp.mp4


  



  But problem is, that I need to change "zoom" - when I use VLC player, I can roll out angle and picture is more "clean". But when I upload video to Youtube I have no option to zoom.

  



  I there any option to change view ?

  


• How to prevent screen tearing when updating stdin input to ffmpeg for youtube livestream

  8 septembre 2021, par Cameron Sima

  I am working on a livestream application that allows multiple web clients to stream video through webrtc to a 'controller' client which will add their audio track, then be able to switch between these video feeds and output the raw stream data to a server running ffmpeg, which will then send the feed to youtube live.

  


  The 'controller' client simply sets one peer video source as the 'active' stream on button press and all others as 'inactive'.

  


  The data is then sent to a node.js server like so :

  


        this.mediaSources.forEach((source, _) => {
    source.recorder.ondataavailable = (e: BlobEvent) => {
        if (source.active) {
          this.socket.emit('binarystream', e.data)
        }
      }


  


  The node server starts an ffmepg process like so :

  


  export class FfmpegService {
ffmpeg: ChildProcess
youtubeUrl = 'rtmp://a.rtmp.youtube.com/live2'

start(rtmpDestination: string) {
    this.ffmpeg = spawn('ffmpeg', this.getFfmpegOptions(rtmpDestination), 
        { shell: process.env.NODE_ENV !== 'production' }
    )
}

stop() {
    if (this.ffmpeg) {
        this.ffmpeg.stdin.end()
        this.ffmpeg.kill('SIGINT')
        this.ffmpeg = null
    }
}

feedStream(data: any) {
    this.ffmpeg.stdin.write(data)
}

private getFfmpegOptions(streamKey: string): string[] {
    const rtmpDestination = this.youtubeUrl + '/' + streamKey
    return [
        '-i','-',
        '-c:v', 'libx264', 
        '-preset', 'fast', '-tune', 'zerolatency',  // video codec config: low latency, adaptive bitrate
        '-c:a', 'aac', '-ar', '44100', '-b:a', '64k', // audio codec config: sampling frequency (11025, 22050, 44100), bitrate 64 kbits
        '-y', //force to overwrite
        '-use_wallclock_as_timestamps', '1', // used for audio sync
        '-async', '1', // used for audio sync
        //'-filter_complex', 'aresample=44100', // resample audio to 44100Hz, needed if input is not 44100
        //'-strict', 'experimental', 
        '-bufsize', '300k',
        '-pix_fmt', 'yuv420p',
        '-f', 'flv', rtmpDestination
    ];
}


  


  Everything works as expected in a youtube live session. The only problem is when switching between input streams, there is about 5 seconds of screen tearing before settling down. From all outward appearances, the switch happens immediately and seamlessly. I feel this can be attenuated/solved by tweaking the ffmpeg options but I'm pretty new to ffmpeg. I have tried increasing/decreasing -bufsize and -preset cli options, but nothing has worked so far.