Can not copy codec properties when it's open

[thecompez]

QtAV, Qt 5.15.0 and macOS Catalina

Compress video using FFmpeg via QtAV

Hello! Check the logs below, please. The program crashes after execution!

I have asked a question here before, but it has not been solved. So, now I have some new logs to you, check the logs and new information. Help me to fix the problem! or show me a sample of video scaling :)

AudioQueue is not created. skip close

Log file

QtAV 1.13.0(Sep  8 2020, 20:42:26)
Multimedia framework base on Qt and FFmpeg.
Distributed under the terms of LGPLv2.1 or later.
Shanghai, China Copyright (C) 2012-2019 Wang Bin (aka. Lucas Wang) [email protected]
Donate: http://qtav.org/donate.html
Source: https://github.com/wang-bin/QtAV
Home page: http://qtav.org
"video thread gets an eof packet."
"(repeat 1)video thread gets an eof packet.\nwaiting audio thread......."
"audio thread gets an eof packet. pkt.pts: -1.000, d.render_pts0:-1.000"
"[AudioDecoder] got_frame_ptr=false. decoded: 0, un: 3 Undefined error: 0"
"Decode audio failed. undecoded: 3"
"audio decode eof done"
"Audio thread stops running..."
"waiting video thread......."
"video thread gets an eof packet."
"(repeat 2)video thread gets an eof packet.\nno frame could be decompressed: Undefined error: 0 3/3"
"video decode eof done. d.render_pts0: -1.000"
"video thread gets an eof packet."
"no frame could be decompressed: Undefined error: 0 3/3"
"video decode eof done. d.render_pts0: -1.000"
"Video thread stops running..."
"Demux thread stops running...."
"demuxer thread emit finished. repeat: 0/0"
"avplayer emit stopped()"
"About finish video encoding"
**"Can not copy codec properties when it's open"**
"(repeat 1)Can not copy codec properties when it's open\nclosing d->format_ctx"
"no packet got"
"AVTranscoder stopped"
"Not playing~"
"(repeat 1)Not playing~\n~~~~~~~~~resetGL 0x7fcc62c87b60. from sender 0x7fcc62eed380"
"Not playing~"
"AudioQueue is not created. skip close"
"(repeat 1)AudioQueue is not created. skip close\nNot playing~"
"~AVThreadPrivate wake up paused thread"

And here my codes:

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QtAV>
#include <QtAVWidgets>
#include <QtAV/AVTranscoder.h>
#include <QtAV/VideoEncoder.h>
#include <QtAV/AudioEncoder.h>

#include <QtDebug>

int main(int argc, char *argv[])
{
  QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

  QGuiApplication app(argc, argv);

  // QtAV::Widgets::registerRenderers();
  QtAV::setLogLevel(QtAV::LogLevel::LogAll);


  QtAV::AVPlayer player;
  QtAV::LibAVFilter *mVideoFilter;

  const QString cv = QString::fromLatin1("mpeg4");

  QString outFile = QString::fromLatin1("out.MOV");
  mVideoFilter = new QtAV::LibAVFilterVideo(&player);
  mVideoFilter->setOptions("scale=320:240");

  QtAV::AVTranscoder avt;

  player.setFile("IMG_0630.MOV");
  player.setFrameRate(10000.0);
  player.audio()->setBackends(QStringList() << QString::fromLatin1("null"));

  avt.setMediaSource(&player);
  avt.setOutputFormat("mp4");
  avt.setOutputMedia(outFile);

  if (!avt.createVideoEncoder()) {
      qWarning("Failed to create video encoder");
      return 1;
    }

  QtAV::VideoEncoder *venc = avt.videoEncoder();
  venc->setCodecName(cv);
  venc->setBitRate(1024*1024);


  QObject::connect(&avt, SIGNAL(stopped()), qApp, SLOT(quit()));
  avt.setAsync(true);
  avt.start();
  player.play();

  QQmlApplicationEngine engine;
  const QUrl url(QStringLiteral("qrc:/main.qml"));
  QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                   &app, [url](QObject *obj, const QUrl &objUrl) {
    if (!obj && url == objUrl)
      QCoreApplication::exit(-1);
  }, Qt::QueuedConnection);
  engine.load(url);

  return app.exec();
}