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• Cannot play media. No decoders for requested formats

  15 novembre 2023, par Mehran Hamzeh

  I get this error to play video in hls player :

  


  Cannot play media. No decoders for requested formats : application/vnd.apple.mpegurl

  


  I tried many ways to solve the problem, but the video cannot be played.

  


  I am using Windows Server 2019, on which I also installed ffmpeg.

  


  What should I do to solve the problem ? Please, instruct me !

  


  installed ffmpeg
Add Mime Type
Install the flash plugin
install Codecs Plugin
Reinstall the browsers

  


• Converting ffmpeg & ffprobe outputs to variables in an ffmpeg AWS Lambda Layer

  7 mars 2019, par Gracie

  I have two tasks I am trying to perform with the ffmpeg AWS Lambda layer.

  1) Convert an audio file from stereo to mono (with ffmpeg)

  2) Get the duration of the audio file and pass the result to a variable (with ffprobe)

  const { spawnSync } = require("child_process");
  
  const { readFileSync, writeFileSync, unlinkSync } = require("fs");
  
  const util = require('util');
  
  var fs = require('fs');
  
  
  
  exports.handler = (event, context, callback) => {
  
  
  
      // Windows 10 ffmpeg command to convert stereo to ffmpeg is
  
      // ffmpeg -i volando.flac -ac 1 volando-mono.flac
  
  
  
      // Convert from stereo to mono
  
      spawnSync(
  
          "/opt/bin/ffmpeg",
  
          [
  
              "-i",
  
              `volando.flac`,
  
              "-ac",
  
              "1",
  
              `/tmp/volando-mono.flac`
  
          ],
  
          { stdio: "inherit" }
  
      );
  
  
  
      //Pass result to a variable
  
      //var duration = stdio;
  
  
  
      //Read the content from the /tmp directory
  
      fs.readdir("/tmp/", function (err, data) {
  
          if (err) throw err;
  
          console.log('Contents of tmp file: ', data);
  
      });
  
  
  
      // Get duration of Flac file
  
      // Windows 10 ffmpeg command is 
  
      // ffprobe in.wav -show_entries stream=duration -select_streams a -of compact=p=0:nk=1 -v 0
  
      spawnSync(
  
          "/opt/bin/ffprobe",
  
          [
  
              `in.wav`,
  
              "-show_entries",
  
              "stream=duration",
  
              "-select_streams",
  
              "a",
  
              "-of",
  
              "compact=p=0:nk=1",
  
              "-v",
  
              "0"
  
          ],
  
          { stdio: "inherit" }
  
  
  
          //Pass result to a variable
  
          //var duration = stdio;
  
      );
  
  
  
  };

  Can anyone who has had success with this ffmpeg Lambda layer help get an output for these commands ?

  Here are some resources regarding the FFmpeg Lambda layer :

  https://serverless.com/blog/publish-aws-lambda-layers-serverless-framework/
  https://github.com/serverlesspub/ffmpeg-aws-lambda-layer
  https://devopstar.com/2019/01/28/serverless-watermark-using-aws-lambda-layers-ffmpeg/

• FFMPEG fails with only two input frames

  3 mars 2019, par JeffThompson

  I’d like to use ffmpeg’s great frame interpolation to blend two images. I get great results when testing with about a dozen frames, but when only using two it finishes immediately and I get a video file that can’t be opened.

  My command :

  ffmpeg -y -r 24 -pattern_type glob -i "TestFrames/*[0-1].png" -pix_fmt yuv420p -filter:v "minterpolate='mi_mode=mci:mc_mode=aobmc:me_mode=bidir:vsbmc=1:fps=1024'" -vsync 2 8.mp4

  Output from ffmpeg :

  ffmpeg version 4.1.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/openjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, image2, from 'TestFrames/*.png':
  
    Duration: 00:00:00.08, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba(pc), 1080x1080, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x7fa5c2813200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7fa5c2813200] profile High, level 6.1
  
  [libx264 @ 0x7fa5c2813200] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '8.mp4':
  
    Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1080x1080, q=-1--1, 1024 fps, 16384 tbn, 1024 tbc
  
      Metadata:
  
        encoder         : Lavc58.35.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
  
  video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  (Why fps=1024 ? I wanted to generate a a bunch of frames between the two images, so I plan to later separate the resulting video into separate images.)