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• ffmpeg runs in terminal but returns error in subprocess.run from flatpak-installed pycharm

  19 juin 2024, par name

  I want to run this command in python :

  


  ffmpeg -ss 00:00:30 -i "/home/exl/—1—ARCHIVE—1—/video/music videos/author --- a2 - name (text).webm" -vf scale=150:-2 -vframes 1 -c:v libwebp -compression_level 6 -quality 100 /home/exl/—1—ARCHIVE—1—/—3—previews—3—/734a8a0bac3a83e0f6c69416a26ec5cd211a6d742f3df63bb72bdbe6431b57c30677bc11551ba4aaaecac15ed2c48de51340a09020b7e9d9479e1e81ff766191.webp


  


  In terminal it works fine, but in subprocess returns error. Python code :

  


  finished_process = subprocess.run(
                    [
                        '/usr/bin/ffmpeg',
                        '-ss', f'00:00:{seconds_shift}',
                        '-i', original_path,
                        '-vf', 'scale=150:-2',
                        '-vframes', '1',
                        '-c:v', 'libwebp',
                        '-compression_level', '6',
                        '-quality', '100',
                        preview_path
                    ],
                    #stdout=subprocess.DEVNULL,
                    #stderr=subprocess.DEVNULL,
                    check=False,
                    capture_output=True
                )


  


  finished_process.stderr.decode() :

  


  ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.1.0 (GCC)
  configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --disable-debug --disable-doc --disable-static --enable-optimizations --enable-shared --disable-everything --enable-ffplay --enable-ffprobe --enable-gnutls --enable-libaom --enable-libdav1d --enable-libfdk-aac --enable-libmp3lame --enable-libfontconfig --enable-libfreetype --enable-libopus --enable-libpulse --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-openal --enable-opengl --enable-sdl2 --enable-vulkan --enable-zlib --enable-libv4l2 --enable-libxcb --enable-vdpau --enable-vaapi --enable-encoder='ac3,alac,flac,libfdk_aac,g723_1,mp2,libmp3lame,libopus,libspeex,pcm_alaw,pcm_mulaw,pcm_f32le,pcm_s16be,pcm_s24be,pcm_s16le,pcm_s24le,pcm_s32le,pcm_u8,tta,libvorbis,wavpack,' --enable-encoder='ass,ffv1,libaom_av1,libvpx_vp8,libvpx_vp9,mjpeg_vaapi,rawvideo,theora,vp8_vaapi,libopenh264' --enable-decoder='adpcm_g722,alac,flac,g723_1,g729,libfdk_aac,libopus,libspeex,mp2,mp3,m4a,pcm_alaw,pcm_mulaw,pcm_f16le,pcm_f24le,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_s16be,pcm_s16be_planar,pcm_s24be,pcm_s16le,pcm_s16le_planar,pcm_s24le,pcm_s24le_planar,pcm_s32le,pcm_s32le_planar,pcm_s64be,pcm_s64le,pcm_s8,pcm_s8_planar,pcm_u8,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,tta,vorbis,wavpack,' --enable-decoder='ass,ffv1,mjpeg,mjpegb,libaom_av1,libdav1d,libvpx_vp8,libvpx_vp9,rawvideo,theora,vp8,vp9,libopenh264' --enable-encoder='bmp,gif,jpegls,png,tiff,webp,' --enable-decoder='bmp,gif,jpegls,png,tiff,webp,' --enable-hwaccel='vp8_vaapi,mjpeg_vaapi,' --enable-parser='aac,ac3,flac,mjpeg,mpegaudio,mpeg4video,opus,vp3,vp8,vp9,vorbis,' --enable-muxer='ac3,ass,flac,g722,gif,matroska,mp3,mpegvideo,rtp,ogg,opus,pcm_s16be,pcm_s16le,wav,webm,' --enable-demuxer='aac,ac3,ass,flac,g722,gif,image_jpeg_pipe,image_png_pipe,image_webp_pipe,matroska,mjpeg,mov,mp3,mpegvideo,ogg,pcm_mulaw,pcm_alaw,pcm_s16be,pcm_s16le,rtp,wav,' --enable-filter='crop,scale,overlay,amix,amerge,aresample,format,aformat,fps,transpose,pad,' --enable-indev='v4l2,xcbgrab,' --enable-protocol='crypto,file,pipe,rtp,srtp,rtsp,tcp,udp,unix,' --arch=x86_64 --enable-libopenh264
  libavutil      57. 17.100 / 57. 17.100
  libavcodec     59. 18.100 / 59. 18.100
  libavformat    59. 16.100 / 59. 16.100
  libavdevice    59.  4.100 / 59.  4.100
  libavfilter     8. 24.100 /  8. 24.100
  libswscale      6.  4.100 /  6.  4.100
  libswresample   4.  3.100 /  4.  3.100
Input #0, matroska,webm, from '/home/exl/—1—ARCHIVE—1—/video/music videos/author --- a2 - name (text).webm':
  Metadata:
    ENCODER         : Lavf59.16.100
  Duration: 00:03:24.98, start: -0.007000, bitrate: 915 kb/s
  Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv, bt709), 1920x1036, SAR 1:1 DAR 480:259, 25 fps, 25 tbr, 1k tbn (default)
    Metadata:
      DURATION        : 00:03:24.960000000
  Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, s16 (default)
    Metadata:
      DURATION        : 00:03:24.981000000
[NULL @ 0x55dd82de7d00] Unable to find a suitable output format for '/home/exl/—1—ARCHIVE—1—/—3—previews—3—/734a8a0bac3a83e0f6c69416a26ec5cd211a6d742f3df63bb72bdbe6431b57c30677bc11551ba4aaaecac15ed2c48de51340a09020b7e9d9479e1e81ff766191.webp'
/home/exl/—1—ARCHIVE—1—/—3—previews—3—/734a8a0bac3a83e0f6c69416a26ec5cd211a6d742f3df63bb72bdbe6431b57c30677bc11551ba4aaaecac15ed2c48de51340a09020b7e9d9479e1e81ff766191.webp: Invalid argument



  


  As suggested here (FFMPEG command runs in terminal but not by subprocess) i tried using which determine path to correct version, but this command returns /usr/bin/ffmpeg both in python and in terminal.

  


  which ffmpeg (both subprocess.run(['which', 'ffmpeg'], capture_output=True).stdout and terminal) : /usr/bin/ffmpeg

  


  ffmpeg -version : 5.1.1-1ubuntu1

  


  ffmpeg version 5.1.1-1ubuntu1 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 12 (Ubuntu 12.2.0-1ubuntu1)
configuration: --prefix=/usr --extra-version=1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --disable-sndio --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-shared


  


  subprocess.run(['ffmpeg', '-version'], capture_output=True).stdout.decode() : 5.0.1

  


  ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 12.1.0 (GCC)
configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --disable-debug --disable-doc --disable-static --enable-optimizations --enable-shared --disable-everything --enable-ffplay --enable-ffprobe --enable-gnutls --enable-libaom --enable-libdav1d --enable-libfdk-aac --enable-libmp3lame --enable-libfontconfig --enable-libfreetype --enable-libopus --enable-libpulse --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-openal --enable-opengl --enable-sdl2 --enable-vulkan --enable-zlib --enable-libv4l2 --enable-libxcb --enable-vdpau --enable-vaapi --enable-encoder='ac3,alac,flac,libfdk_aac,g723_1,mp2,libmp3lame,libopus,libspeex,pcm_alaw,pcm_mulaw,pcm_f32le,pcm_s16be,pcm_s24be,pcm_s16le,pcm_s24le,pcm_s32le,pcm_u8,tta,libvorbis,wavpack,' --enable-encoder='ass,ffv1,libaom_av1,libvpx_vp8,libvpx_vp9,mjpeg_vaapi,rawvideo,theora,vp8_vaapi,libopenh264' --enable-decoder='adpcm_g722,alac,flac,g723_1,g729,libfdk_aac,libopus,libspeex,mp2,mp3,m4a,pcm_alaw,pcm_mulaw,pcm_f16le,pcm_f24le,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_s16be,pcm_s16be_planar,pcm_s24be,pcm_s16le,pcm_s16le_planar,pcm_s24le,pcm_s24le_planar,pcm_s32le,pcm_s32le_planar,pcm_s64be,pcm_s64le,pcm_s8,pcm_s8_planar,pcm_u8,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,tta,vorbis,wavpack,' --enable-decoder='ass,ffv1,mjpeg,mjpegb,libaom_av1,libdav1d,libvpx_vp8,libvpx_vp9,rawvideo,theora,vp8,vp9,libopenh264' --enable-encoder='bmp,gif,jpegls,png,tiff,webp,' --enable-decoder='bmp,gif,jpegls,png,tiff,webp,' --enable-hwaccel='vp8_vaapi,mjpeg_vaapi,' --enable-parser='aac,ac3,flac,mjpeg,mpegaudio,mpeg4video,opus,vp3,vp8,vp9,vorbis,' --enable-muxer='ac3,ass,flac,g722,gif,matroska,mp3,mpegvideo,rtp,ogg,opus,pcm_s16be,pcm_s16le,wav,webm,' --enable-demuxer='aac,ac3,ass,flac,g722,gif,image_jpeg_pipe,image_png_pipe,image_webp_pipe,matroska,mjpeg,mov,mp3,mpegvideo,ogg,pcm_mulaw,pcm_alaw,pcm_s16be,pcm_s16le,rtp,wav,' --enable-filter='crop,scale,overlay,amix,amerge,aresample,format,aformat,fps,transpose,pad,' --enable-indev='v4l2,xcbgrab,' --enable-protocol='crypto,file,pipe,rtp,srtp,rtsp,tcp,udp,unix,' --arch=x86_64 --enable-libopenh264


  


  Thank you in advance.

  


• How to find the loudness of an audio buffer in Node.js ?

  10 mai 2024, par Parshant Khichi

  I have a buffer containing audio data representing a voice recording, and I need to determine its loudness in Node.js. I tried using the fluent-ffmpeg library, as it seemed to offer functionality for audio analysis. However, my attempts to use it to analyze the loudness of the audio buffers were unsuccessful.
Could someone please suggest a reliable approach or provide a code example to help me analyze the loudness of the audio buffers accurately in Node.js ? Any guidance or assistance would be greatly appreciated.

  


• Streaming client over TCP and RTSP through Wi-Fi or LAN in Android

  6 janvier 2015, par Gowtham

  I am struggling to develop streaming client for DVR camera’s, I tried with VLC Media player through RTSP protocol I got the solution (used Wi-Fi standard model like, Netgear etc.,), but the same code is not supporting for other Wi-Fi Modem’s, now am working with FFMPEG framework to implement the streaming client in android using JNI API. Not getting any proper idea to implement JNI api

  Network Camera working with IP Cam Viewer App

  code below,

  /*****************************************************/
  
  /* functional call */
  
  /*****************************************************/
  
  
  
  jboolean Java_FFmpeg_allocateBuffer( JNIEnv* env, jobject thiz )
  
  {
  
  
  
      // Allocate an AVFrame structure
  
      pFrameRGB=avcodec_alloc_frame();
  
      if(pFrameRGB==NULL)
  
          return 0;
  
  sprintf(debugMsg, "%d %d", screenWidth, screenHeight);
  
  INFO(debugMsg);
  
      // Determine required buffer size and allocate buffer
  
      numBytes=avpicture_get_size(dstFmt, screenWidth, screenHeight);
  
  /*
  
      numBytes=avpicture_get_size(dstFmt, pCodecCtx->width,
  
                    pCodecCtx->height);
  
  */
  
      buffer=(uint8_t *)av_malloc(numBytes * sizeof(uint8_t));
  
  
  
      // Assign appropriate parts of buffer to image planes in pFrameRGB
  
      // Note that pFrameRGB is an AVFrame, but AVFrame is a superset
  
      // of AVPicture
  
      avpicture_fill((AVPicture *)pFrameRGB, buffer, dstFmt, screenWidth, screenHeight);
  
  
  
      return 1;
  
  }
  
  
  
  
  
  /* for each decoded frame */
  
  jbyteArray Java_FFmpeg_getNextDecodedFrame( JNIEnv* env, jobject thiz )
  
  {
  
  
  
  
  
  av_free_packet(&packet);
  
  
  
  while(av_read_frame(pFormatCtx, &packet)>=0) {
  
  
  
      if(packet.stream_index==videoStream) {
  
  
  
          avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
  
  
  
          if(frameFinished) {     
  
  
  
          img_convert_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt, screenWidth, screenHeight, dstFmt, SWS_BICUBIC, NULL, NULL, NULL);
  
  
  
  /*
  
  img_convert_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height, dstFmt, SWS_BICUBIC, NULL, NULL, NULL);
  
  */
  
  
  
          sws_scale(img_convert_ctx, (const uint8_t* const*)pFrame->data, pFrame->linesize,
  
       0, pCodecCtx->height, pFrameRGB->data, pFrameRGB->linesize);
  
  
  
  ++frameCount;
  
  
  
          /* uint8_t == unsigned 8 bits == jboolean */
  
          jbyteArray nativePixels = (*env)->NewByteArray(env, numBytes);
  
          (*env)->SetByteArrayRegion(env, nativePixels, 0, numBytes, buffer);
  
          return nativePixels;
  
          }
  
  
  
      }
  
  
  
      av_free_packet(&packet);
  
  }
  
  
  
  return NULL;
  
  }
  
  
  
  /*****************************************************/
  
  /* / functional call */
  
  /*****************************************************/
  
  
  
  
  
  jstring
  
  Java_FFmpeg_play( JNIEnv* env, jobject thiz, jstring jfilePath )
  
  {
  
      INFO("--- Play");
  
  char* filePath = (char *)(*env)->GetStringUTFChars(env, jfilePath, NULL);
  
  RE(filePath);
  
  
  
  /*****************************************************/
  
  
  
    AVFormatContext *pFormatCtx;
  
    int             i, videoStream;
  
    AVCodecContext  *pCodecCtx;
  
    AVCodec         *pCodec;
  
    AVFrame         *pFrame; 
  
    AVPacket        packet;
  
    int             frameFinished;
  
    float           aspect_ratio;
  
    struct SwsContext *img_convert_ctx;
  
  
  
  INFO(filePath);
  
  
  
  /* FFmpeg */
  
  
  
    av_register_all();
  
  
  
    if(av_open_input_file(&pFormatCtx, filePath, NULL, 0, NULL)!=0)
  
      RE("failed av_open_input_file ");
  
  
  
    if(av_find_stream_info(pFormatCtx)<0)
  
          RE("failed av_find_stream_info");
  
  
  
    videoStream=-1;
  
    for(i=0; inb_streams; i++)
  
      if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
  
        videoStream=i;
  
        break;
  
      }
  
    if(videoStream==-1)
  
          RE("failed videostream == -1");
  
  
  
    pCodecCtx=pFormatCtx->streams[videoStream]->codec;
  
  
  
    pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
  
    if(pCodec==NULL) {
  
      RE("Unsupported codec!");
  
    }
  
  
  
    if(avcodec_open(pCodecCtx, pCodec)<0)
  
      RE("failed codec_open");
  
  
  
    pFrame=avcodec_alloc_frame();
  
  
  
  /* /FFmpeg */
  
  
  
  INFO("codec name:");
  
  INFO(pCodec->name);
  
  INFO("Getting into stream decode:");
  
  
  
  /* video stream */
  
  
  
    i=0;
  
    while(av_read_frame(pFormatCtx, &packet)>=0) {
  
  
  
      if(packet.stream_index==videoStream) {
  
        avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet);
  
        if(frameFinished) {
  
  ++i;
  
  INFO("frame finished");
  
  
  
      AVPicture pict;
  
  /*
  
      img_convert_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height,
  
   pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height,
  
   PIX_FMT_YUV420P, SWS_BICUBIC, NULL, NULL, NULL);
  
  
  
      sws_scale(img_convert_ctx, (const uint8_t* const*)pFrame->data, pFrame->linesize,
  
   0, pCodecCtx->height, pict.data, pict.linesize);
  
  */
  
        }
  
      }
  
      av_free_packet(&packet);
  
    }
  
  
  
  /* /video stream */
  
  
  
    av_free(pFrame);
  
  
  
    avcodec_close(pCodecCtx);
  
  
  
    av_close_input_file(pFormatCtx);
  
  
  
    RE("end of main");
  
  }

  I can’t able to get the frames from Network camera

  And give some idea to implement the live stream client for DVR camera in Android