Video element plays video at wrong position on IOS

onek24

Hey,

could you please provide us the video-component code you are using in your QML file?

Jacky2k

Hi,

I am not using QML. Here are the important code snippets:
@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

player =  new QMediaPlayer;
player->setVideoOutput(ui->videoWidget);
ui->videoWidget->show();

}

void MainWindow::onActionOpen()
{
QString file = QFileDialog::getOpenFileName(this, tr("Open Video File"), ".");
if(file.isEmpty())
return;

player->setMedia(QUrl::fromLocalFile&#40;file&#41;);
player->setVolume(50);
player->play();

}@

ui->videoWidget is of type QVideoWidget
On my Ubuntu 14.04 64bit host everything works fine. Qt is version 4.8.6 for host and 4.8.5 for target. QtMobility is 1.2.0 for both.

Jacky2k

Hi,

I am not using QML. Here are the important code snippets:
@MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

player =  new QMediaPlayer;
player->setVideoOutput(ui->videoWidget);
ui->videoWidget->show();

}

void MainWindow::onActionOpen()
{
QString file = QFileDialog::getOpenFileName(this, tr("Open Video File"), ".");
if(file.isEmpty())
return;

player->setMedia(QUrl::fromLocalFile&#40;file&#41;);
player->setVolume(50);
player->play();

}@

ui->videoWidget is of type QVideoWidget
On my Ubuntu 14.04 64bit host everything works fine. Qt is version 4.8.6 for host and 4.8.5 for target. QtMobility is 1.2.0 for both.

onek24

-Oh okay, your thread is in the QtQuick(QML)-section so i thought you did it with QML-. Well, how do you position your MediaPlayer?

My bad, this thread is a few months old and you are not OP. Still, i will try to help you trough your problem even if i haven't worked with the QMediaPlayer so far.

onek24

-Oh okay, your thread is in the QtQuick(QML)-section so i thought you did it with QML-. Well, how do you position your MediaPlayer?

My bad, this thread is a few months old and you are not OP. Still, i will try to help you trough your problem even if i haven't worked with the QMediaPlayer so far.

Jacky2k

I have an UI file where I have a few buttons and also the QVideoWidget using Layouts.

Jacky2k

I have an UI file where I have a few buttons and also the QVideoWidget using Layouts.

onek24

Have you tried to re-position your videoWidget after you started playing a video?

onek24

Have you tried to re-position your videoWidget after you started playing a video?

Jacky2k

How am I supposed to do that? The Widget is part of a layout. setGeometry() has no effect.

Jacky2k

How am I supposed to do that? The Widget is part of a layout. setGeometry() has no effect.

onek24

Sorry, my bad, haven't read the layouts part. Well, in that case: Have you tried positioning it without a layout? Does that work? And have you tried playing with the horizontal and vertical settings of the widget?

onek24

Sorry, my bad, haven't read the layouts part. Well, in that case: Have you tried positioning it without a layout? Does that work? And have you tried playing with the horizontal and vertical settings of the widget?

timday

See "QTBUG-42721":https://bugreports.qt-project.org/browse/QTBUG-42721

I raised this as an issue with iOS video placement (using the QML VideoOutput, but it presumably sits on the same underlying code as the C++ ) a week or so ago which sounds like it's the same as hailong's problem. If it helps identify it's the same thing:

It came in with Qt5.3.2; I never saw the problem on 5.3.1.
If you rotate the device while the video is playing, it'll move to where you expect it to! (At least until the video ends; if you have it set up to loop, it might move back to the top corner again).

timday

See "QTBUG-42721":https://bugreports.qt-project.org/browse/QTBUG-42721

I raised this as an issue with iOS video placement (using the QML VideoOutput, but it presumably sits on the same underlying code as the C++ ) a week or so ago which sounds like it's the same as hailong's problem. If it helps identify it's the same thing:

It came in with Qt5.3.2; I never saw the problem on 5.3.1.
If you rotate the device while the video is playing, it'll move to where you expect it to! (At least until the video ends; if you have it set up to loop, it might move back to the top corner again).

Jacky2k

Well, then I guess it is not the same problem as I am using Qt 4.8.5.

Jacky2k

Well, then I guess it is not the same problem as I am using Qt 4.8.5.

Jacky2k

At least in my case it seems to be a problem of gsteramer and not Qt. I was able to reproduce the problem using gst-launch:
@# gst-launch -v videotestsrc ! xvimagesink@
When I use ximagesink it works perfectly fine.

Jacky2k

At least in my case it seems to be a problem of gsteramer and not Qt. I was able to reproduce the problem using gst-launch:
@# gst-launch -v videotestsrc ! xvimagesink@
When I use ximagesink it works perfectly fine.

hailong

wow, so many replies on my thread, I feel so happy that more and more people are using Qt for cross-platform app development.

I could't not solve my problem on September even if I had done a lot of research on that, so I used one week to learn how to develop for IOS and rewrited the hole app using Obj-C.