Sur d’autres sites (6929)

• node-webkit with ffmpeg

  29 novembre 2012, par David Weldon

  I'm interested in building a cross-platform video compression and upload utility using node-webkit. My requirements are as follows :

  • completely self contained - no other installs are necessary
  • ffmpeg is included
  • fluent-ffmpeg included
  • temp files are created and streamed to my server
  • can run on windows, mac, linux

  I have no idea if this can be done, but if you know if this is even possible and how to do it, I'd really like to know.

• ffmpeg commands not working in micromax android

  10 février 2014, par pavan

  I am able to execute ffmpeg commands on android devices like Samsung,LG and Sony but in Micromax it's not working. I have built ffmpeg library for arm processor. I could not collect the log because I am not able to connect the device. I have following questions on this,
  1) Why it's not working on Micromax ?
  2) I do not want to show my app on other device apart from ARM based android device, is it possible to control ?

  The below configuration I have used while building ffmpeg,

   !/bin/bash

  cd ffmpeg

  export TMPDIR=tmp
  mkdir -p $TMPDIR

  Android NDK Location

  NDK=/Users/sunitha/Downloads/android-ndk-r9c

  ANDROID_API=android-9
  SYSROOT=$NDK/platforms/$ANDROID_API/arch-arm
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86
  CROSS_PREFIX=$PREBUILT/bin/arm-linux-androideabi-
  ARM_INCLUDE=$SYSROOT/usr/include
  ARM_LIB=$SYSROOT/usr/lib
  PREFIX=../build
  OPTIMIZE_CFLAGS=" -marm -march=armv6 "
  ADDITIONAL_CONFIGURE_FLAG=

  Location of lame's static installation

  MP3LAME=../libmp3lame
  X264=../libx264

  ./configure \
  —arch=arm \
  —target-os=linux \
  —enable-cross-compile \
  —cross-prefix=$CROSS_PREFIX \
  —prefix=$PREFIX \
  —sysroot=$SYSROOT \
  —extra-cflags=" -I$ARM_INCLUDE -I$MP3LAME/include -I$X264/include -DANDROID $OPTIMIZE_CFLAGS" \
  —extra-ldflags=" -L$ARM_LIB -L$MP3LAME/lib -L$X264/lib" \
  —disable-debug \
  —enable-libmp3lame \
  —enable-libx264 \
  —disable-ffplay \
  —disable-ffprobe \
  —disable-ffserver \
  —enable-avfilter \
  —enable-decoders \
  —enable-demuxers \
  —enable-encoders \
  —enable-filters \
  —enable-indevs \
  —enable-network \
  —enable-parsers \
  —enable-protocols \
  —enable-swscale \
  —enable-gpl \
  —enable-nonfree \
  $ADDITIONAL_CONFIGURE_FLAG

  cd ..

• Error loading FFmpeg : ReferenceError : SharedArrayBuffer is not defined - Angular 18.2.3

  9 septembre 2024, par Memariya Chirag

  Question :

  


  I am working on an Angular project (version 18.2.3) where I use ffmpeg.wasm to trim videos and extract frames. However, when trying to load FFmpeg, I am encountering the following error in the console :

  


  Error loading FFmpeg: ReferenceError: SharedArrayBuffer is not definedenter image description here


  


  Below is the code that initializes FFmpeg and attempts to load it: 


  


  export class VideoEditorComponent implements OnInit {&#xA;  ffmpeg = createFFmpeg({ log: true });&#xA;  isPlaying = false;&#xA;  frameDataArray: Uint8Array[] = [];&#xA;  frameIndex = 0;&#xA;&#xA;  async trimAndExtractFrames(): Promise<void> {&#xA;    try {&#xA;      // Load FFmpeg&#xA;      await this.ffmpeg.load();&#xA;      console.log("FFmpeg loaded successfully");&#xA;    } catch (error) {&#xA;      console.error("Error loading FFmpeg:", error);&#xA;    }&#xA;  }&#xA;}&#xA;</void>

  


  I have tried to troubleshoot the issue but am unsure how to proceed.

  


  The error seems related to SharedArrayBuffer, which I understand is required for performance improvements in multi-threading for web applications.

  


  I have checked my ffmpeg.wasm setup, and it works fine in a plain JavaScript application.

  


  Ensured that my Angular application is correctly serving the WebAssembly files.

  


  Looked into setting up the appropriate HTTP headers for Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy, but I am unsure if I have done it correctly.

  


  My questions :

  


  

  • How do I resolve the SharedArrayBuffer is not defined error in Angular ?

  


  • Is there a specific setup required for using SharedArrayBuffer in Angular with WebAssembly applications like FFmpeg ?

  


  • How can I ensure that the necessary HTTP headers are configured correctly in my Angular project to support this ?

  


  


  Additional information :

  


  

  • Angular version : 18.2.3

  


  • ffmpeg.wasm version : Latest (installed via npm)

  


  • Browser : Chrome 100+