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• Trying to use the arcade library on Python3 with Debian 10 errors with pyglet_ffmpeg

  30 mars 2020, par Colin

  I’ve been trying to use the arcade library this morning with python3 but keep getting nothing but errors.

  My environment is Debian 10 (buster)

  I checked first to ensure I have python 3 installed, this confirmed as Python 3.7.3

  I double checked (according to the arcade library website arcade linux installation instructions and ran the install for python3 to make sure that pip and the required libraries were installed.

  I then ran the command to install the library

  sudo pip3 install arcade

  And to test it, copied and pasted the happy_face.py example. However when I tried to run it I got a slew of errors. This seems to be directly related to the arcade installation and if I just run a python script (test.py) with just one line

  import arcade

  At the terminal with

  python3 test.py

  I get the following errors

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavcodec.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavformat.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswresample.so.3.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavfilter.so.7.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavutil.so.56.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswscale.so.5.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavcodec.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavformat.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswresample.so.3.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavfilter.so.7.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavutil.so.56.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswscale.so.5.*

  I have used the following terminal command to identify the version of OpenGL installed

  glxinfo | grep "OpenGL version"

  Which returned

  OpenGL version string : 3.3 (Compatibility Profile) Mesa 18.3.6

  I have also tried the terminal command

  sudo pip3 install pyglet-ffmpeg

  Which returns

  Requirement already satisfied : pyglet-ffmpeg in
  /usr/local/lib/python3.7/dist-packages (0.1.4)

  Requirement already satisfied : pyglet>=1.4.0a1 in
  /usr/local/lib/python3.7/dist-packages (from pyglet-ffmpeg) (1.5.0)

  Requirement already satisfied : future in
  /usr/local/lib/python3.7/dist-packages (from
  pyglet>=1.4.0a1->pyglet-ffmpeg) (0.18.2)

  Any assistance would be appreciated. I’ve tried to be as concise as I can, but if more information is required, I’ll gladly supply it.

• avcodec/vaapi_encode : move the dpb logic from VAAPI to base layer

  18 avril 2024, par Tong Wu

  avcodec/vaapi_encode : move the dpb logic from VAAPI to base layer
  Move receive_packet function to base. This requires adding *alloc,
  
  *issue, *output, *free as hardware callbacks. HWBaseEncodePicture is
  
  introduced as the base layer structure. The related parameters in
  
  VAAPIEncodeContext are also extracted to HWBaseEncodeContext. Then DPB
  
  management logic can be fully extracted to base layer as-is.
  Signed-off-by : Tong Wu <tong1.wu@intel.com>
  

  • [DH] libavcodec/Makefile
  • [DH] libavcodec/hw_base_encode.c
  • [DH] libavcodec/hw_base_encode.h
  • [DH] libavcodec/vaapi_encode.c
  • [DH] libavcodec/vaapi_encode.h
  • [DH] libavcodec/vaapi_encode_av1.c
  • [DH] libavcodec/vaapi_encode_h264.c
  • [DH] libavcodec/vaapi_encode_h265.c
  • [DH] libavcodec/vaapi_encode_mjpeg.c
  • [DH] libavcodec/vaapi_encode_mpeg2.c
  • [DH] libavcodec/vaapi_encode_vp8.c
  • [DH] libavcodec/vaapi_encode_vp9.c

• nodejs ffmpeg child-process stdio stream stops

  10 mars 2023, par BleedFeed

  I've been trying to make an internet radio stream using ffmpeg to encode the audio data in mp3

  


  function getAudioStream(url){

    return new Promise(async(resolve,reject)=>{

        const ytdlStream = await ytdl(url,{filter:'audioonly',quality:'highestaudio'});

        const ffmpegProcess = spawn('ffmpeg',[
        '-i','pipe:3',
        '-f','mp3',
        '-ar','44100',
        '-ac','2',
        '-b:a','128k',
        '-codec:a','libmp3lame',
        '-flush_packets', '1',
        'pipe:4'],{stdio:['ignore','ignore','pipe','pipe','pipe']});
        ytdlStream.pipe(ffmpegProcess.stdio[3]);
        ffmpegProcess.stderr.on('data',(chunk)=>{
            console.log('FFMPEG ERROR: ' + chunk.toString());
        })
        resolve(ffmpegProcess.stdio[4].pipe(new PassThrough({highWaterMark:4096})));
    });
}

async function setUpStream(fromQueue,client,shout){

    let readable;
    let videoDetails;

    if(fromQueue){
        readable = await getAudioStream(queue[0]);
        videoDetails = (await ytdl.getBasicInfo(queue[0])).videoDetails;
        queue.shift();
    }
    else{
        let song = songs[Math.floor(Math.random() * songs.length)];
        readable = await getAudioStream(song);
        videoDetails = (await ytdl.getBasicInfo(song)).videoDetails;
    }


    readable.on('data',async (chunk)=>{
        readable.pause();
        shout.send(chunk,chunk.length);
        await new Promise((resolve)=>{setTimeout(resolve,shout.delay())});
        readable.resume();
    });

    readable.on('end',()=>{
        readable.destroy();
        setUpStream(queue.length !==0,client,shout);
    });


    readable.on('error',(err)=>{
        console.log(err);
    });

}


  


  shout.send is from npm nodeshout library and it delivers the audio data to icecast server.
I get another ffmpeg audio stream once the current one ends. After 20 or 30 minutes ffmpeg logs stop and no further data comes from ffmpegStream

  


  FFMPEG ERROR: size=    2952kB time=00:03:08.89 bitrate= 128.0kbits/s speed=1.07x
FFMPEG ERROR: size=    3016kB time=00:03:13.00 bitrate= 128.0kbits/s speed=1.07x
FFMPEG ERROR: size=    3080kB time=00:03:17.10 bitrate= 128.0kbits/s speed=1.07x
FFMPEG ERROR: size=    3144kB time=00:03:21.17 bitrate= 128.0kbits/s speed=1.07x
FFMPEG ERROR: size=    3208kB time=00:03:25.27 bitrate= 128.0kbits/s speed=1.07x 


  


  these are the last lines printed at console. Maybe some sort of memory management problem with child process ? How can i find what causes this problem ?