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• lavc/hevcdec : Add slice parse support for HEVC SCC extension

  16 février 2023, par Linjie Fu

  lavc/hevcdec : Add slice parse support for HEVC SCC extension
  Signed-off-by : Linjie Fu <linjie.justin.fu@gmail.com>
  
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  

  • [DH] libavcodec/hevcdec.c
  • [DH] libavcodec/hevcdec.h

• fluent-ffmpeg on lambda exits process without any errors

  29 juin 2020, par John Grayson

  I am running ffmpeg on a lambda that runs, but exits the process before it is finished, but does not produce any sort of error and I am trying to figure out why. My lambda gets triggered when a file is uploaded to s3. The lambda retrieves the file from s3 and processes it using ffmpeg. I put in enough console.logs to determine that the lambda is able to retrieve and save the file just fine ; but it exits the process without any errors in the ffmpeg process. Relevant parts of my code :

  


  const ffmpeg = require("fluent-ffmpeg");
const tempFolder = "/tmp";

// Set ffmpeg path
ffmpeg.setFfmpegPath("/opt/bin/ffmpeg");
ffmpeg.setFfprobePath("/opt/bin/ffprobe");

exports.handler = async (event, context) => {
  const bucket = get(event, "Records[0].s3.bucket.name");
  const key = get(event, "Records[0].s3.object.key");
  await getVideo(bucket, key);
  console.log('Successfully retrieved video, now convert it');
  try {
    console.log('Now start converting') // This line gets hit
    await convertVideo(key, 30);
    console.log('done converting'); // This line does NOT get hit
  } catch (e) {
    console.log("--Error converting video--", e); // This line does NOT get hit
  }
  return {
    done: true,
  };
};

function convertVideo(key, frames) {
  console.log("in convert vid fcn", key); // This line gets hit
  return new Promise((resolve, reject) => {
    ffmpeg()
      .addInput(`${tempFolder}/${key}`)
      .output(`${tempFolder}/updated_${key}.mp4`)
      .outputOptions(`-r ${frames}`)
      .on("error", (err) => {
        console.error("Error during processing", err); // This line does NOT get hit
        reject(err);
      })
      .on("end", () => {
        console.log("Processing finished!"); // This line does NOT get hit
        resolve();
      });
  });
}



  


  The same code works fine on my local machine. Also, I know for a fact that ffmpeg does run because if I don't pass in the frames value, ffmpeg throws an error. Does anyone have any idea what I might be doing wrong ?

  


  Thank you !

  


• ffmpeg - Stream multiple files over an ffserver to one ffplay at different times ? [closed]

  13 mai 2013, par golmschenk

  I have an ffserver up and running. Using this server I can run a simple ffplay command :

  ffplay udp://localhost:7777

  which then waits for a stream. Then if I stream something to the server with a simple ffmpeg command :

  ffmpeg -re -i small.mp4 -f mpegts udp://localhost:7777

  The video pops up and plays fine. However, after the video is finished and the ffplay is still waiting open with the display window showing the last frame of the video just sent, then if I try to run the same ffmpeg command again to play the video again, the ffplay gets a bunch of warnings which look similar to :

  [mpegts @ 0x7fde1c0008c0] Continuity check failed for pid 256 expected 2 got 0

  And there is no playback. I would like to be able to stream one video, leave the same ffplay open and a little while after the first video has stopped stream another video. Is there a way I can achieve this ? Thank you much !