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• Enable Quality Selector Control in Angular Using Video.js

  3 février, par Abhay Singh

  I am using Video.js in an Angular 19.1.3 application, with version 8.21.0 of Video.js. I have successfully set up an HLS stream using a master index.m3u8 file, and the player automatically switches to lower quality segments when the network is slow, and to higher quality when the network is good. This part works as expected.

  


  However, I would like to add a manual quality selection option to allow users to choose the video quality themselves. Despite trying several plugins (such as videojs-hls-quality-selector and videojs-contrib-quality-levels), I haven't been able to get it working.

  


  Can anyone guide me on how to implement this feature in Video.js, ensuring that the quality selector is available for manual selection ?

  


  Below is my Components code -

  


  import {AfterViewInit, Component} from '@angular/core';
import videojs from 'video.js';
import '@videojs/http-streaming';
import 'video.js/dist/video-js.css';

@Component({
  selector: 'app-home',
  imports: [],
  templateUrl: './home.component.html',
  styleUrl: './home.component.css'
})
export class HomeComponent implements AfterViewInit {
  
  ngAfterViewInit(): void {
    const player = videojs('my-video', {
      autoplay: false,
      controls: true,
      preload: 'auto',
      fluid: true,
      aspectRatio: '16:9',
    })
  
  }
}


  


  Below is my HTML code -

  


  <video class="video-js vjs-default-skin" controls="controls">&#xA;    <source src="https://localhost:7063/videos/no1lvswh.zdw.mkv/index.m3u8" type="application/x-mpegURL">&#xA;  </source></video>  &#xA;

  


• SVT-AV1 Emscripten build

  24 février 2023, par Yoz

  I am trying to build svt-av1 v1.4.1 for ffmpeg with emscripten 3.1.32. I have followed Build-Guide and ended up with the following command :

  


  cd Build

BUILD_DIR=/home/jozefchutka/ffmpeg-wasm/build/
TOOLCHAIN_FILE=$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake

emmake cmake .. -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$BUILD_DIR -DCMAKE_TOOLCHAIN_FILE=$TOOLCHAIN_FILE -DBUILD_SHARED_LIBS=OFF -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DCMAKE_HAVE_LIBC_PTHREAD=On -DCMAKE_C_FLAGS="-O3 -I/home/jozefchutka/ffmpeg-wasm/build/include -s USE_PTHREADS=1 -msimd128"

emmake make -j


  


  however the process fails on :

  


  ...
[ 95%] Building C object Source/App/EncApp/CMakeFiles/SvtAv1EncApp.dir/EbTime.c.o
[ 96%] Linking C executable ../../../../Bin/Release/SvtAv1EncApp.js
emcc: error: noexecstack: No such file or directory ("noexecstack" was expected to be an input file, based on the commandline arguments provided)
make[2]: *** [Source/App/EncApp/CMakeFiles/SvtAv1EncApp.dir/build.make:213: ../Bin/Release/SvtAv1EncApp.js] Error 1
make[1]: *** [CMakeFiles/Makefile2:574: Source/App/EncApp/CMakeFiles/SvtAv1EncApp.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....


  


  Generated build.make and link.txt which contains some relevant info.

  


  211: ../Bin/Release/SvtAv1EncApp.js: Source/App/EncApp/CMakeFiles/SvtAv1EncApp.dir/link.txt
212:    @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --green --bold --progress-dir=/home/jozefchutka/ffmpeg-wasm/modules/svtav1/Build/CMakeFiles --progress-num=$(CMAKE_PROGRESS_8) "Linking C executable ../../../../Bin/Release/SvtAv1EncApp.js"
213:    cd /home/jozefchutka/ffmpeg-wasm/modules/svtav1/Build/Source/App/EncApp && $(CMAKE_COMMAND) -E cmake_link_script CMakeFiles/SvtAv1EncApp.dir/link.txt --verbose=$(VERBOSE)


  


  /home/jozefchutka/ffmpeg-wasm/modules/emsdk/upstream/emscripten/emcc -O3 -I/home/jozefchutka/ffmpeg-wasm/build/include -s USE_PTHREADS=1 -msimd128 -O3 -DNDEBUG  -z noexecstack -z relro -z now @CMakeFiles/SvtAv1EncApp.dir/objects1.rsp -o ../../../../Bin/Release/SvtAv1EncApp.js @CMakeFiles/SvtAv1EncApp.dir/linklibs.rsp


  


  As I am not fluent in c/c++ and related build stack, I am not sure if the problem is my build misconfiguration, svt-av1 sources or emscripten.

  


  Please help me resolve the issue or at least identify the cause, so I can continue in relevant issue tracker.

  


• Compilation of x264 with newest libswscale and libavformat

  4 décembre 2016, par pcroland

  Yesterday I wanted to compile x264 myself because the latest binary on videolan is compiled without libswscale : link

  If I just use

  ./configure --enable-static --enable-shared

  then the binary will compile libswscale 3.1.101 and libavformat 56.40.101 from the libswscale-dev and libavformat-dev packages. If I clone FFmpeg’s git and use

  ./configure --enable-static --enable-shared --extra-cflags="-I$HOME/FFmpeg"

  the binary will have the latest libswscale and libavformat, but it wont work :

  pc@pcroland:~/bin$ ./x264 --version
  
  x264 0.148.2744 b97ae06
  
  (libswscale 4.3.101)
  
  (libavformat 57.58.101)
  
  built on Dec  4 2016, gcc: 5.4.0 20160609
  
  x264 configuration: --bit-depth=8 --chroma-format=all
  
  libx264 configuration: --bit-depth=8 --chroma-format=all
  
  x264 license: GPL version 2 or later
  
  libswscale/libavformat license: GPL version 2 or later
  
  pc@pcroland:~/bin$ ./x264 --input-res 1920x1080 --fps 24000/1001 --vf resize:720,404,method=spline --output /home/pc/test.264 /home/pc/asd.264
  
  [h264 @ 0x1bc3ec0] Format h264 detected only with low score of 1, misdetection possible!
  
  [h264 @ 0x1bc3ec0] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize' options
  
  lavf [error]: could not find input stream info
  
  avs [error]: failed to load avisynth
  
  raw [info]: 1920x1080p 0:0 @ 24000/1001 fps (cfr)
  
  resize [info]: resizing to 720x404
  
  x264 [info]: using SAR=404/405
  
  x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  x264 [info]: profile High, level 3.0
  
  Bus error (core dumped)
  
  pc@pcroland:~/bin$

  How to reproduce the error :

  cd; git clone https://github.com/FFmpeg/FFmpeg; git clone http://git.videolan.org/git/x264.git; cd x264; ./configure --enable-static --enable-shared --extra-cflags="-I$HOME/FFmpeg" --bindir="$HOME/bin"; sudo make; sudo make install

  System : Ubuntu 16.04