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• configure : Add additional glslang libraries to make linking work

  18 août 2020, par Philip Langdale

  configure : Add additional glslang libraries to make linking work
  The latest builds of glslang introduce new libraries that need to be
  
  linked for all symbols to be fully resolved.
  This change will break building against older installations of glslang
  
  and it's very hard to tell them apart as the library change upstream
  
  was not accompanied by any version bump and no official release has
  
  been made with this change it - just lots of people packaging up git
  
  snapshots. So, apologies in advance.
  

  • [DH] configure

• how to uses ffmpeg's xfade transition filter to connect multiple video files to a single file by cshrp ?

  8 septembre 2021, par Mark2

  how to uses FFmpeg's xfade transition filter to connect multiple video files to a single file by cshrp ?

  


  I find a scripts on GitHub :https://github.com/qq2225936589/xfade-ffmpeg-script , but I did not good at shell scripts.
I read the official documents and spliced the two videos. If there are more than one, my idea is to splice two by two, and then splice them into a large one. Is there a better solusion ?

  


• ffmpeg video unable to play properly in most video players

  7 septembre 2022, par Lars

  I'm trying to set up a node.js app that allows me to download files from a web interface.
I'm using yt-dl to get the video and audio stream and ffmpeg to pipe those streams into an mp4. This works and returns a mp4 file.

  


  Now the only issue I have is that when I play the file through most video players, the video player is unable to seek, or skip through the song. I found somewhere deep down on a forum that means that that means the mp4 headers are not working but that is all I could find.
Here is my code, almost unchanged from this response on another thread.

  


  Can anyone provide a solution for this issue.

  


  ytdl.getInfo(link, options).then(info => {
        audioStream = ytdl.downloadFromInfo(info, { ...options, quality: 'highestaudio' });
        videoStream = ytdl.downloadFromInfo(info, { ...options, quality: 'highestvideo' });
        // create the ffmpeg process for muxing
        ffmpegProcess = cp.spawn(ffmpegPath, [
            // supress non-crucial messages
            '-loglevel', '8', '-hide_banner',
            // input audio and video by pipe
            '-i', 'pipe:3', '-i', 'pipe:4',
            // map audio and video correspondingly
            '-map', '0:a', '-map', '1:v',
            // no need to change the codec
            '-c', 'copy',
            // output mp4 and pipe
            '-f', 'matroska', 'pipe:5'
        ], {
            // no popup window for Windows users
            windowsHide: true,
            stdio: [
                // silence stdin/out, forward stderr,
                'inherit', 'inherit', 'inherit',
                // and pipe audio, video, output
                'pipe', 'pipe', 'pipe'
            ]
        });
        audioStream.pipe(ffmpegProcess.stdio[3]);
        videoStream.pipe(ffmpegProcess.stdio[4]);
        ffmpegProcess.stdio[5].pipe(result);
    });