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• Anomalie #3622 : .raccourcis en colonne gauche

  21 décembre 2017, par chan kalan

  ceci dit, la règle overflow-wrap : break-word ; pourrait aussi convenir, peut-être mieux...

• Short HLS MPEG2 Video Segments Do Not Play

  24 août 2019, par Jon H

  I’ve been attempting to cut a video into small segments (words), to be rearranged. While I’ve been able to do it with FFMPEG, cutting into segments and using the fast concat demuxer to reassemble the segments, I am trying to speed it up.

  I have been doing this by splitting the original video into short MPEG2 .ts segments for each word :

  ffmpeg -ss 1 -to 1.5 -i "source.mp4" -c:v libx264 -b:v 1200k -c:a aac -b:a 192k -hls_flags single_file "word.ts"

  I have then tried making a m3u8 playlist of these short video segments, but I found that only segments around 2 seconds or more, play at all.

  I then tried using the ’cat’ command to join these segments into a single file, which I understand should be possible with MPEG2 streams. However, this did not play all the segments either.

  To test if all the segments were present in this concatenated file, I used FFMPEG to convert it back into an MP4 file, and all the segments were present.

  I would appreciate any suggestions on producing the segments, and concatenating individual segments simply without FFMEPG. My project isn’t viable if having to call FFMPEG each time, but would work great if I can simply concatenate words together.

• sandboxed electron app cant use ffmpeg (mac apple store)

  3 janvier 2021, par Martin

  I am trying to build an electron application for the mac apple store that uses ffmpeg.

  


  I can use fluent-ffmpeg locally fine and It continues to work when I build my app for windows/mac/linux, but when I build a sandoxed Mac Apple Store (MAS) .app file and sign the .app file, fluent-ffmpeg does not work anymore, and throws an ffmpeg was killed with signal SIGILL error in console :

  


  

  


  Fluent-ffmpeg gets setup with this javscript code :

  


          //begin get ffmpeg info
        const ffmpeg = require('fluent-ffmpeg');
        //Get the paths to the packaged versions of the binaries we want to use
        var ffmpegPath = require('ffmpeg-static-electron').path;
        ffmpegPath = ffmpegPath.replace('app.asar', 'app.asar.unpacked')
        var ffprobePath = require('ffprobe-static-electron').path;
        ffprobePath = ffprobePath.replace('app.asar', 'app.asar.unpacked')
        //tell the ffmpeg package where it can find the needed binaries.
        
        ffmpeg.setFfmpegPath(ffmpegPath)//("./src/ffmpeg/ffmpeg");
        ffmpeg.setFfprobePath(ffprobePath)//("./src/ffmpeg/ffprobe");
        
        //end set ffmpeg info


  


  I have looked into this issue some and found similar questions, like this stackoverflow answer (link here) which says to compile a static ffmpeg executable and use that.

  


  So I learned how to compile ffmpeg from the command line using these commands on my mac terminal :

  


  git clone https://git.ffmpeg.org/ffmpeg.git 

./configure --pkg-config-flags="--static" --libdir=/usr/local/lib --extra-version=ntd_20150128 --disable-shared --enable-static --enable-gpl --enable-pthreads --enable-nonfree  --enable-libass --enable-libfdk-aac  --enable-libmp3lame  --enable-libx264 --enable-filters --enable-runtime-cpudetect

make



  


  After a while, I get an ffmpeg folder, which I move to my electron project's src folder /src/

  


  I place this ffmpeg folder inside my electron /src folder and change my ffmpeg setup code to use my statically built folder like so :

  


          //begin get ffmpeg info
        const ffmpeg = require('fluent-ffmpeg');
        //Get the paths to the packaged versions of the binaries we want to use
        var ffmpegPath = require('ffmpeg-static-electron').path;
        ffmpegPath = ffmpegPath.replace('app.asar', 'app.asar.unpacked')
        var ffprobePath = require('ffprobe-static-electron').path;
        ffprobePath = ffprobePath.replace('app.asar', 'app.asar.unpacked')
        //tell the ffmpeg package where it can find the needed binaries.
        
        ffmpeg.setFfmpegPath(ffmpegPath)//("./src/ffmpeg/ffmpeg");
        ffmpeg.setFfprobePath(ffprobePath)//("./src/ffmpeg/ffprobe");
        
        //end set ffmpeg info


  


  And then build / sign my app with these commands :

  


  $ electron-builder build --mac

$ sudo codesign --deep --force --verbose --sign '##(my dev id)####' dist/mas/Digify-mac.app


  


  But the final built .app file has the same error when trying to launch ffmpeg :

  


  ffmpeg was killed with signal SIGILL


  


  I've been trying to solve this issue myself but with no luck, there have been some recent posts about this on the apple developer forums :
https://developer.apple.com/forums/thread/87849

  


  but most of the other guides online are outdated.

  


  Can anyone please help me get ffmpeg working in an sandboxed electron app for the Mac Apple Store ? Any help would be much appreciated