Stop Playing a Video from QMediaPlayer at Position X
I am new to Qt and I am using QMediaPlayer in one of my GUI projects and I want to stop the loaded video at a certain position X (input from user on a Line Edit) how would I be able to do this? I know I am able to set a starting position just by doing player->setPosition(Y) where Y is an integer but what about an ending position?
c++ qt
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
add a comment |
I am new to Qt and I am using QMediaPlayer in one of my GUI projects and I want to stop the loaded video at a certain position X (input from user on a Line Edit) how would I be able to do this? I know I am able to set a starting position just by doing player->setPosition(Y) where Y is an integer but what about an ending position?
c++ qt
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
add a comment |
I am new to Qt and I am using QMediaPlayer in one of my GUI projects and I want to stop the loaded video at a certain position X (input from user on a Line Edit) how would I be able to do this? I know I am able to set a starting position just by doing player->setPosition(Y) where Y is an integer but what about an ending position?
c++ qt
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
I am new to Qt and I am using QMediaPlayer in one of my GUI projects and I want to stop the loaded video at a certain position X (input from user on a Line Edit) how would I be able to do this? I know I am able to set a starting position just by doing player->setPosition(Y) where Y is an integer but what about an ending position?
c++ qt
c++ qt
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
asked Nov 26 '18 at 3:19
patelvrajnpatelvrajn
386
386
add a comment |
add a comment |
1 Answer
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One lesser option would be to use position() which returns the current position as a qint64 - if you call the play() method for your QMediaPlayer then use something like
while (player.position() < input) {}
player.stop(); // Or player.pause();
it will wait until the input position is reached. But the drawback to that approach is the blocking while loop and without knowing the intended application I don't know if that would be appropriate. It is probably better to use the QMediaPlayer::positionChanged signal (which is emitted based on the QMediaPlayer's notifyInterval), something like
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(checkPosition());
where it is assumed this is the receiver and both player and input are scoped such that they are available to the slot checkPosition(). checkPosition() then looks something like
checkPosition() {
if (player.position() > input()) {
player.stop(); // Or player.pause();
}
}
Of course you can also pass the player and the input to the checkPosition() slot but I neglected that for simplicity. Hope this helps.
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
One lesser option would be to use position() which returns the current position as a qint64 - if you call the play() method for your QMediaPlayer then use something like
while (player.position() < input) {}
player.stop(); // Or player.pause();
it will wait until the input position is reached. But the drawback to that approach is the blocking while loop and without knowing the intended application I don't know if that would be appropriate. It is probably better to use the QMediaPlayer::positionChanged signal (which is emitted based on the QMediaPlayer's notifyInterval), something like
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(checkPosition());
where it is assumed this is the receiver and both player and input are scoped such that they are available to the slot checkPosition(). checkPosition() then looks something like
checkPosition() {
if (player.position() > input()) {
player.stop(); // Or player.pause();
}
}
Of course you can also pass the player and the input to the checkPosition() slot but I neglected that for simplicity. Hope this helps.
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
add a comment |
One lesser option would be to use position() which returns the current position as a qint64 - if you call the play() method for your QMediaPlayer then use something like
while (player.position() < input) {}
player.stop(); // Or player.pause();
it will wait until the input position is reached. But the drawback to that approach is the blocking while loop and without knowing the intended application I don't know if that would be appropriate. It is probably better to use the QMediaPlayer::positionChanged signal (which is emitted based on the QMediaPlayer's notifyInterval), something like
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(checkPosition());
where it is assumed this is the receiver and both player and input are scoped such that they are available to the slot checkPosition(). checkPosition() then looks something like
checkPosition() {
if (player.position() > input()) {
player.stop(); // Or player.pause();
}
}
Of course you can also pass the player and the input to the checkPosition() slot but I neglected that for simplicity. Hope this helps.
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
add a comment |
One lesser option would be to use position() which returns the current position as a qint64 - if you call the play() method for your QMediaPlayer then use something like
while (player.position() < input) {}
player.stop(); // Or player.pause();
it will wait until the input position is reached. But the drawback to that approach is the blocking while loop and without knowing the intended application I don't know if that would be appropriate. It is probably better to use the QMediaPlayer::positionChanged signal (which is emitted based on the QMediaPlayer's notifyInterval), something like
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(checkPosition());
where it is assumed this is the receiver and both player and input are scoped such that they are available to the slot checkPosition(). checkPosition() then looks something like
checkPosition() {
if (player.position() > input()) {
player.stop(); // Or player.pause();
}
}
Of course you can also pass the player and the input to the checkPosition() slot but I neglected that for simplicity. Hope this helps.
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
One lesser option would be to use position() which returns the current position as a qint64 - if you call the play() method for your QMediaPlayer then use something like
while (player.position() < input) {}
player.stop(); // Or player.pause();
it will wait until the input position is reached. But the drawback to that approach is the blocking while loop and without knowing the intended application I don't know if that would be appropriate. It is probably better to use the QMediaPlayer::positionChanged signal (which is emitted based on the QMediaPlayer's notifyInterval), something like
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(checkPosition());
where it is assumed this is the receiver and both player and input are scoped such that they are available to the slot checkPosition(). checkPosition() then looks something like
checkPosition() {
if (player.position() > input()) {
player.stop(); // Or player.pause();
}
}
Of course you can also pass the player and the input to the checkPosition() slot but I neglected that for simplicity. Hope this helps.
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
answered Nov 26 '18 at 3:59
William MillerWilliam Miller
1
1
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
add a comment |
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
I was just about to suggest this. using position() was the only thing I could think of also.
– cecil merrel aka bringrainfire
Nov 26 '18 at 4:38
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
This helped alot, thank you! However, in case it leads to a segment fault which I have to fix now.
– patelvrajn
Nov 26 '18 at 8:23
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
The segment fault was caused by not disconnecting the positionChanged(qint64) signal from the checkPosition() slot after pausing/stopping the video in the checkPosition() slot function.
– patelvrajn
Nov 27 '18 at 0:11
add a comment |
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