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• Uncaught SyntaxError : Unexpected token ' ' using videojs - ffmpegjs plugin and multiple plugins issue

  6 octobre 2020, par Muhammad Faheem

  I'm trying to use ffmpegjs plugin into videojs but getting error

  


  


  "Uncaught SyntaxError : Unexpected token '<'".

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  Also don't know how to use multiple plugins in videojs. Wanna use ffmpeg along with ts-ebml.

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  This is how I'm using in videojs options :

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  options: {
                controls: true,
                bigPlayButton: false,
                loop: false,
                width: 600,
                height: 340,
                fluid: false,
                plugins: {
                    wavesurfer: {
                        backend: "WebAudio",
                        waveColor: "#ffffff",
                        backgroundColor: "#000000",
                        barHeight: 3,
                        progressColor: "white",
                        debug: true,
                        cursorWidth: 1,
                        displayMilliseconds: true,
                        hideScrollbar: true,
                        plugins: [
                            // enable microphone plugin
                            WaveSurfer.microphone.create({
                                bufferSize: 4096,
                                numberOfInputChannels: 1,
                                numberOfOutputChannels: 1,
                                constraints: {
                                    video: false,
                                    audio: true
                                }
                            })
                        ]
                    },
                    record: {
                        audio: true,
                        video: false,
                        maxLength: 3600,
                        debug: true,
                        // enable ffmpeg.js plugin
                        convertEngine: "ffmpeg.js",
                        // convert recorded data to MP3
                        convertOptions: ["-f", "mp3", "-codec:a", "libmp3lame", "-qscale:a", "2"],
                        // specify output mime-type
                        pluginLibraryOptions: {
                            outputType: "audio/mpeg"
                        },
                        // use MP4 encoding worker (H.264 & AAC & MP3 encoders)
                        convertWorkerURL: "../../../../node_modules/ffmpeg.js/ffmpeg-worker-mp4.js"
                    }
                }
            }


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• avcodec/frame_thread_encoder : Avoid allocations of AVPackets, fix deadlock

  7 février 2021, par Andreas Rheinhardt

  avcodec/frame_thread_encoder : Avoid allocations of AVPackets, fix deadlock
  Up until now, when doing frame thread encoding, each worker thread
  
  tried to allocate an AVPacket for every AVFrame to be encoded ; said
  
  packets would then be handed back to the main thread, where the content
  
  of said packet is copied into the packet actually destined for output ;
  
  the temporary AVPacket is then freed.
  Besides being wasteful this also has another problem : There is a risk of
  
  deadlock, namely if no AVPacket can be allocated at all. The user
  
  doesn't get an error at all in this case and the worker threads will
  
  simply try to allocate a packet again and again. If the user has
  
  supplied enough frames, the user's thread will block until a task has
  
  been completed, which just doesn't happen if no packet can ever be
  
  allocated.
  This patch instead modifies the code to allocate the packets during
  
  init ; they are then reused again and again.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavcodec/frame_thread_encoder.c

• ffmpeg video not working for Instagram, Snapchat, etc

  21 mai 2020, par hungry_

  I’m building a web app that combines a photo and an audio file to create a video. The video seems to export fine and I can view it on my phone, but when I upload to social media the video just skips, unable to play. These are my ffmpeg settings. Thanks !

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  `Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 640x852 [SAR 639:640 DAR 3:4], q=-1--1, 25 fps, 12800 tbn, 25 tbc`


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