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• FFmpeg's common filter "v360" missing

  26 septembre 2021, par Niklas E.

  I'm trying to convert a 180° fisheye video to a normal/regular video using the v360 filter of FFmpeg.

  


  This is the command I tried :
  
ffmpeg -i in.mp4 -vf "v360=input=fisheye:output=flat:iv_fov=180:v_fov=90" out.mp4

  


  But the output says clearly No such filter: 'v360', although v360 is a common filter listed in docs and other filters I used before worked just fine. I tried updating/reinstalling and looking for solutions, not fixing it.

  


  Why is the filter missing ? How can I debug this ? Should I doe the task using another program entirely ?

  


  Command output :

  


  ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41
    creation_time   : 2021-09-11T14:18:33.000000Z
  Duration: 00:02:48.02, start: 0.000000, bitrate: 26056 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 2160x1080 [SAR 1:1 DAR 2:1], 25924 kb/s, 50 fps, 50 tbr, 50k tbn, 100 tbc (default)
    Metadata:
      creation_time   : 2021-09-11T14:18:33.000000Z
      handler_name    : Mainconcept MP4 Video Media Handler
      encoder         : AVC Coding
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    Metadata:
      creation_time   : 2021-09-11T14:18:33.000000Z
      handler_name    : Mainconcept MP4 Sound Media Handler
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
[AVFilterGraph @ 0x55ee57567340] No such filter: 'v360'
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed!


  


• Flutter FFmpeg - [AVFilterGraph @ 0x88f4b300] No such filter : '"scale'

  9 septembre 2021, par Aryan Shandilya

  So, I am trying to combine an image and an audio file and convert it to a video using ffmpeg in flutter using flutter-ffmpeg but I am getting this error when I am trying to use executewithareguments() function.


  


  I am getting this error ->


  


  I suspected that maybe I should remove the double quotes but even that is giving an error. It would be very helpful if someone tells me what I am doing wrong.
Also, I was using min-gpl version of ffmpeg, I thought that was causing the problem, so I changed it to full-gpl but the error still remains. Any form of help would be great.

  


• when I filter a frame with "fps=fps=30" my code starts consuming a lot of ram until it crashes, but if I use "scale=250:250" it works fine

  23 août 2021, par Gabriel Ayala

  When I apply the filter "scale=250:250" my code works, it outputs a rescalated video
but when I apply the filter "fps=fps=30000/1000", the code asks for ram until it crashes, I think the problem is in the applyFilter function
PasteBin of complete code https://pastebin.com/tcgwFmTz this part starts at line 257

  


  int applyFilter(filterCtx* filter, AVFrame* inFrame, AVFrame* outFrame)
{
    int ret;
    /* push the decoded frame into the filtergraph */
    if (av_buffersrc_add_frame_flags(filter->buffersrc_ctx, inFrame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0)
    {
        return 0;
    }

    /* pull filtered frames from the filtergraph */
    for (EVER)
    {
        ret = av_buffersink_get_frame(filter->buffersink_ctx, outFrame);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
        {
            return 3;
        }
        if (ret < 0)
        {
            return -1;
        }
        return 0;
    }
    return 0;
}


  


      char filterDesc = "fps=fps=30000/1000"; // THIS DOESN'T WORK
    //char filterDesc = "scale=1200:1200"; THIS WORKS
    filter = initFilter(filterDesc, params);
    
    for (EVER)
    {
        getFrame(decoder, frame, packet);
        if(decoder->container->streams[packet->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
        {
            if (filter != NULL)
            {
                response = applyFilter(filter, frame, filterFrame);
                if (response < 0)
                {
                    printf("Error while applying a filter");
                    return -1;
                }
                tmp = frame;
                av_frame_unref(frame);
                frame = filterFrame;
                filterFrame = tmp;
                if(response == 3)
                {
                    continue;
                }
            }
            
        }
        encode(decoder, encoder, frame, packet->stream_index);

    }