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• FFMPEG Python : Encountered scale(1920, 1080) with multiple outgoing edges with same upstream label None ; a `split` filter is probably required

  2 janvier, par Lysander Cox

  Here is the code in question :

  


  for comment in thread['comments']:
        commentClips += fragmentConcat(comment, filePrefix)
        
        staticClip = ffmpeg.input('assets/static.mp4')
        commentClips.append(staticClip
                                .filter('setsar', 1, 1)
                                .filter('scale', 1920, 1080)
                           )
        commentClips.append(staticClip.audio)


  


  This code generates the following error :

  


  ValueError: Encountered scale(1920, 1080) <6adb028f8ef5> with multiple outgoing edges with same upstream label None; a `split` filter is probably required


  


  I have tried using only the video part of the input for the first call (e.g. staticClip['v'].filter...), and I have tried using the split call as suggested (e.g. ffmpeg.input(...).split(). Nothing has worked. What is the issue, and how can I rememdy it ? Thanks.

  


• FFMPEG : alphaextract+split create transparent video in 1080 x 1920 pixels not working

  30 juin 2021, par Karim Elhalloumi

  Create your transparent video :
i found a solution to a problem of creating alpha from a video then put it next to original as an output it give one video with original+alpha
using this ffmpeg cmd :

  


  ffmpeg -i video_name.video_extension -vf "split [a], pad=iw*2:ih [b], [a] alphaextract, [b] overlay=w" -y final_name_alpha.mp4


  


  source :https://docs.minsar.app/create/howtos/transparentvideos/
the problem is This operation with Ffmpeg will not work if your video is not in 16:9 format, or has no alpha background.

  


  Result :
CMD Result 
iwant put as input a template for phone size with black background and generate the 2 video in one

  


  what Iam trying to get is video.mp4 :
Process here

  


  I'm new to ffmpeg, is there any cmd to generate alpha next to original without having only black back ground and with 9:16 instead ?

  


  
ffmpeg version 4.4-essentials_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 00:00:14.02, start: 0.000000, bitrate: 797 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 540x960, 662 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[Parsed_alphaextract_2 @ 000001a9dae4bdc0] Requested planes not available.
[Parsed_alphaextract_2 @ 000001a9dae4bdc0] Failed to configure input pad on Parsed_alphaextract_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[aac @ 000001a9dadd4280] Qavg: 6441.061
[aac @ 000001a9dadd4280] 2 frames left in the queue on closing
Conversion failed!


  


  cmd I'm using to merge video :

  


  - filter_complexe "[2]split=2[color][alpha];[color]crop=iw/2:ih:0:0[color];[alpha]crop=iw/2:ih:iw/2:0[alpha];[color][alpha]alphamerge[ovrly];[0]scale=460:505,setsar=1[0_scaled];[1]scale=460:505,setsar=1[1_scaled];[3][0_scaled]overlay=x=80:y=175[base_img_1];[3][1_scaled]overlay=x=80:y=175[base_img_2];[base_img_1]zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0006))':d=25*14:s=540x960,fade=out:st=6:d=1:alpha=1,fade=t=in:st=0:d=1[video1];[base_img_2]zoompan=z='if(lte(on,25*6),1,if(lte(zoom,-1.0),1.2,min(zoom+0.0006,1.2)))':d=25*14:s=540x960[video2];[video2][video1]overlay[overlay_video1];[overlay_video1][ovrly]overlay=0:0[base_video];[base_video][4]overlay=enable='between(t,0,7)':x=30:y=30[watermarked_part1];[watermarked_part1][4]overlay=enable='between(t,7,14)':x=(main_w-overlay_w-30):y=(main_h-overlay_h-10)[final_video]"


  


• Unable to allocate 47.5 MiB for an array with shape (1080, 1920, 3) and data type float64

  21 août 2022, par eragon

  Iam try to create a large video(longer than 3h)by CompositeVideoClip using moviepy.
The problem is it take too much ram (i have 32gb ram).It takes the whole ram (99%) by create a bunch of ffmpeg-win64-v4.2.2.exe ffmpeg-win64-v4.2.2.exe


  


  

  


  after it a while it said Unable to allocate 47.5 MiB for an array with shape (1080, 1920, 3) and data type float64.
here is my code :

  


  def CombieVideo():
    global curentVideoLengt
    masterVideo = NULL
    for videoUrl in videoFiles:
        print(videoUrl)
        video = VideoFileClip(videoUrl).fx(vfx.fadein,1).fx(vfx.fadeout,1)
        curentVideoLengt += video.duration
        if curentVideoLengt >= (audioLen*60*60):
            break
        if masterVideo== NULL:
            masterVideo= video
        else:
            masterVideo = CompositeVideoClip([masterVideo,video])
            
    if curentVideoLengt < (audioLen*60*60):
        videoUrl=random.choice(videoFiles)
        print(videoUrl)
        video =video(videoUrl).fx(vfx.fadein,1).fx(vfx.fadeout,1)
        curentVideoLengt= curentVideoLengt+video.duration
        masterVideo = CompositeVideoClip([masterVideo,video])
        CombieVideo()
    else:
        masterVideo.audio = CompositeAudioClip(audios)
        masterVideo.write_videofile('./MasterVideo/output_video.avi', fps=30, threads=4, codec="png")
        
CombieVideo()