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Qmediaplayer metadata. Upvoting indicates when questions and answers are useful.
- Qmediaplayer metadata I guess it's an improvement lol 文章浏览阅读409次。QMediaPlayer多次获取元数据重复_qmediaplayer metadata Jul 17, 2025 · So windows or any mediaPlayer can read thoses mp3 files and get MetaData from theme, apparently only Qt faile to success at it no matter the version or what so ever . 0实现打开电脑摄像头或其他的外接摄像头（实现拍照功能） QT6. Playback is working, but I don't seem to be able to get any meta data about the file. Feb 22, 2023 · 另一种方法是：我们可以连接QMediaPlayer的mediaStatusChanged信号，当状态变为QMediaPlayer. I have tried using a QVideoWidget instead of a QGraphicsVideoItem, and I have tried connecting to the metaDataAvailableChanged signal too, to no avail. I doubt it supports livestream format. Jun 28, 2022 · Hello, I'm trying to extract metadata from music files so that I can use it for specific applications. LoadedMedia时，我们可以 获取媒体文件 的音频流 信息，然后根据这个 信息 设置QAudioFormat。 May 7, 2023 · @Daniela I am using Qt 6. See also mediaMetaData. using the internets media Jul 15, 2025 · @Darta said in Obtaining MetaData from mp3 files: now I'm not sur if it is FFmpeg last version who is bugged or if it is Qt who is poorly using thoses libra There are some old Qt threads about this problem: get resolution of a video file, and QMediaPlayer resolution returns (-1x-1). QMediaPlayer ¶ class QMediaPlayer ¶ The QMediaPlayer class allows the playing of a media files. Each index refers to a subtitle track. Details Apr 2, 2022 · About MetaData, I found a bizzare behaviour. mediaplayers by themselves also do not connect to the internet. The metadata holds properties describing the individual tracks. Upvoting indicates when questions and answers are useful. metaData: PySide6. 0实现一个简单的视频和音频播放器 本文主要是对QMediaMetaData的部分讲解，通过例子结合相应的函数功能来介绍，对于初学者来说比较友好，并且在后期会 Apr 2, 2022 · About MetaData, I found a bizzare behaviour. For information about media recording, see Media Capture and Recording. like what is the frame rate , bit rate ,format ,all the bits and pices . One possibility is to load all songs one at the time, query the metadata when the status is QMediaPlayer::LoadedMedia (connect to mediaStatusChanged () signal) and isMetaDataAvailable () returns true, and then close the media and move to the next one. I'm using Windows 11 0 SGaist Lifetime Qt Champion 3 Apr 2022, 12:59 metaData : mediaMetaData Returns meta data for the current media used by the media player. cpp file line 116 std::optional<MediaDataHolder::ContextError> MediaDataHolder::recreateAVFormatContext(const QUrl &media, QIODevice *stream) set a breakpoint to debug, and then check the return value of the avformat_open_input function, which shows that the protocol is not supported. 6. videoWidget -> show(); player -> play(); Since QMediaPlayer is a QMediaObject, you can use several of the QMediaObject functions for things like: Accessing the currently playing media's metadata (QMediaObject::metaData () and predefined meta-data keys) Checking to see if the media playback service is currently available (QMediaObject Jun 28, 2022 · Hello, I'm trying to extract metadata from music files so that I can use it for specific applications. Nov 22, 2015 · I set mp3 media with cover to QMediaPlayer, I call QMediaPlayer::isMetaDataAvailable () and it returns true, then I call QMediaPlayer::availableMetaData (), and it returns this: ("Author", "AverageL PySide6. 0实现简单的录音器 QT6. This function was introduced in Qt 6. So I guess that I started with something bugged that would have never work because of Qt, to end up with a dual issue that I'm not sure how to solve. multimedia. Each index refers to an audio track. how can i get this information?? @ NguyenMinh said in Best way to get Media MetaData?: QMediaPlayer in this funtion to read meta data but it too slow Can you show how you're using it? Sep 23, 2020 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. QtMultimedia. For audio tracks the Language is usually the most important property. Jun 23, 2020 · At the time that WaitForMetaData() is called, i assure you that QMediaPlayer has been allocated with QMediaPlayer::VideoSurface, and the mp4 file path has been properly set with setMedia(). 1. Jul 15, 2025 · I have an issue with the way to get metadata from QMediaPlayer->metaData, no matter what I have tryed the metadata stays empty. and just following the poor documentation about it doesn't work either If anyone could help me shed some light on this subject it would be much appreciated. If I test with FFmpeg in a terminal, same things happens. Jul 15, 2025 · with time a new message is added: onMediaStatusChanged: QMediaPlayer::EndOfMedia and I keep the red message with metaData when I close the application. To get the resolution I need to use metaDataChanged signal from QMediaPlayer, but it works only if the file is on local system, if I load a file inside . isEmpty() ¶ Return type: bool Returns true if the meta data contains no items: otherwise returns false. wav files. the issue is that my slot onMediaStatusChanged is Apr 2, 2022 · Unsolved Customize QVideoWidget and QMediaPlayer Metadata problems General and Desktop qvideowidget qmediaplayer qmediametadata transparent transparency 3. Sep 10, 2019 · Howdy, I'm using a QMediaPlayer to play back . static keyType(key) ¶ Parameters: key – Key May 5, 2018 · i want to get properties of video and audio file. But, it does work If I add the option: -rtsp_transport tcp Any ideas how to solve this? Thanks in advance. May 7, 2023 · I'm streaming a window using FFmpeg and I'm trying to connect the stream to a QMediaPlayer widget, like: #include #include int main(int argc, char *argv[] Apr 29, 2025 · QMediaPlayer API Relevant source files This document provides a comprehensive overview of the QMediaPlayer class in the Qt Multimedia framework. How to access the meta data of QMediaPlayer? Asked 6 years, 8 months ago Modified 6 years, 2 months ago Viewed 1k times Member Function Documentation [since 6. [override virtual noexcept] QMediaPlayer:: ~QMediaPlayer () Destroys the player object. 1. QMediaPlayer. thank's in advance ! Jul 15, 2025 · I have an issue with the way to get metadata from QMediaPlayer->metaData, no matter what I have tryed the metadata stays empty. QMediaMetaData. insert(k, value) ¶ Parameters: k – Key value – object Inserts a value into a Key: k. ffmpeg: Using Qt multimedia with FFmpeg version 7. 9. Overview QMediaPlayer provides a simplified interface for media playback with capabilities for Sep 7, 2024 · 在较新的 Qt 版本中， QMediaPlayer::metaData() 已经不再需要显式传入参数，而是直接返回一个 QVariantMap，包含所有的元数据 键值对。 This property holds a list of metadata. qrc resource file I get (-1, -1). 6k Views 1 Watching Oldest to Newest Apr 13, 2017 · the question was: while isMetaDataAvailable() == true, getting metaData still returns a QVariant(Invalid), how can i retrieve metaData of the media? The value may change across the life time of the QMediaPlayer object and may not be available when initial playback begins, connect to the durationChanged () signal to receive status notifications. 1 or later onMediaStatusChanged: QMediaPlayer::LoadingMedia Title: "" Jul 30, 2024 · B站视频讲解 QT6. I tried to use QMediaPlayer. Although some solutions are given, none work for me, and in fact there is a bug report of this: Apr 2, 2022 · still it gives missing file error on include Does this happen when you build your application or is it in QtCreator editor? Jul 15, 2025 · qt. Here is a working code Jul 15, 2025 · with time a new message is added: onMediaStatusChanged: QMediaPlayer::EndOfMedia and I keep the red message with metaData when I close the application. [invokable] void QMediaMetaData:: clear () Removes all data from the meta data object. For subtitle tracks the Language is usually the most important property. However, as I'm using Qt PySide6. 1 LGPL version 2. Here is a working code that allow me to listening a song on my computer: Sep 7, 2023 · A live stream has no set duration, you'll have to instead use the web browser and set the qurl in the web browser to the livestream, then make the screen fullsize. Meta data can contain information such as the title of the video or its creation date. Here is a working code videoWidget -> show(); player -> play(); Since QMediaPlayer is a QMediaObject, you can use several of the QMediaObject functions for things like: Accessing the currently playing media's metadata (QMediaObject::metaData () and predefined meta-data keys) Checking to see if the media playback service is currently available (QMediaObject Apr 8, 2018 · Qt Multimedia only supports querying the current songs's metadata. Member Function Documentation [explicit] QMediaPlayer:: QMediaPlayer (QObject * parent = nullptr) Constructs a QMediaPlayer instance as a child of parent. 5 version. videoWidget -> show(); player -> play(); Since QMediaPlayer is a QMediaObject, you can use several of the QMediaObject functions for things like: Accessing the currently playing media's metadata (QMediaObject::metaData () and predefined meta-data keys) Checking to see if the media playback service is currently available (QMediaObject Jul 15, 2025 · Hello, I have an issue with the way to get metadata from QMediaPlayer->metaData, no matter what I have tryed the metadata stays empty. The QMediaPlayer class allows the playing of a media files. However, as I'm using Qt Sep 7, 2023 · As far as I know, QMediaPlayer is using FFmpeg here (Ubuntu 22. Here is a working code that allow me to listening a song on my computer: subtitleTracks : list < mediaMetaData > [read-only] This property holds a list of metadata. By default this property is NoMedia Access functions: mediaStatus () Signal mediaStatusChanged (status) property PᅟySide6. I think what you are using is the embedded mediaplayer, which plays media files, not livestreams. In particula This property holds a list of metadata. float QMediaPlayer:: bufferProgress () const Returns a number between 0 and 1 when buffering data. data ¶ clear() ¶ Removes all data from the meta data object. I guess it's an improvement lol Mar 1, 2013 · [qt5] QMediaPlayer - i can`t get metaData :/ General and Desktop 6 Posts 3 Posters 6. NumMetaData ¶ PySide6. QMediaMetaData # Returns meta data for the current media used by the media player. What's reputation and how do I get it? Instead, you can save this post to reference later. 04). Hello, I have an issue with the way to get metadata from QMediaPlayer->metaData, no matter what I have tryed the metadata stays empty. QMediaPlayer is a high-level class for playing audio and video media files. I debugged qt source code, in qffmpegmediadataholder. 0实现一个简单的视频和音频播放器 QT6. 9] auto QMediaMetaData:: asKeyValueRange () const Returns a range object that allows iteration over this hash as key/value pairs. jr whig l5u9n l83 a0shf tgov ib9 huk4i0 5k9u ehald