Qt 6.5 MediaPlayer and tcp stream
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I'm trying to display a simple tcp stream in a MediaPlayer object in Qt 6.5 (ffmpeg backend), but it doesn't seem to work. I tried to open it from my application, as well from the mediaplayer example.
Here is a minimal example: I create a stream myself using gstreamer (mjpeg encoding):
gst-launch-1.0 videotestsrc ! videoconvert ! video/x-raw,format=I420 ! jpegenc quality=70 ! multipartmux ! tcpserversink host=127.0.0.1 port=5000I can open the stream using
vlc(using url:tcp://127.0.0.1:5000) and using ffmpeg:ffplay tcp://127.0.0.1:5000. It can be decoded by gstreamer too:gst-launch-1.0 tcpclientsrc host=127.0.0.1 port=5000 ! multipartdemux ! jpegdec ! autovideosinkHowever opening
tcp://127.0.0.1:5000as URL from the mediaplayer Qt example gives a "Could not open file" error.
Same when setting thesourceproperty of a mediaplayer object to this URL.Can you give some hints how to open this stream? Or how can I build a stream that can be decoded by mediaplayer?
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I'm trying to display a simple tcp stream in a MediaPlayer object in Qt 6.5 (ffmpeg backend), but it doesn't seem to work. I tried to open it from my application, as well from the mediaplayer example.
Here is a minimal example: I create a stream myself using gstreamer (mjpeg encoding):
gst-launch-1.0 videotestsrc ! videoconvert ! video/x-raw,format=I420 ! jpegenc quality=70 ! multipartmux ! tcpserversink host=127.0.0.1 port=5000I can open the stream using
vlc(using url:tcp://127.0.0.1:5000) and using ffmpeg:ffplay tcp://127.0.0.1:5000. It can be decoded by gstreamer too:gst-launch-1.0 tcpclientsrc host=127.0.0.1 port=5000 ! multipartdemux ! jpegdec ! autovideosinkHowever opening
tcp://127.0.0.1:5000as URL from the mediaplayer Qt example gives a "Could not open file" error.
Same when setting thesourceproperty of a mediaplayer object to this URL.Can you give some hints how to open this stream? Or how can I build a stream that can be decoded by mediaplayer?
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@kbarni
I don't know, but since Qt6 removed support for FTP protocol (QNetworkAccessManager) is this a non-starter trying to open atcp:...Url schema whether forQMediaPlayeror otherwise?Oh dear, sorry, I thought it said
ftp:nottcp:! :(@JonB
Normally TCP is the most low-level protocol (almost every other protocol sends data over TCP), so I don't know how this can be a problem. It definitely is supported by QTcpSocket.
I tested without thetcp://and it still doesn't work.
Anyway, I was thinking that the URL was being sent directly to ffmpeg.Unfortunately the ffmpeg backend for Qt multimedia is not documented and QML is not very verbose when there's an error.
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@JonB
Normally TCP is the most low-level protocol (almost every other protocol sends data over TCP), so I don't know how this can be a problem. It definitely is supported by QTcpSocket.
I tested without thetcp://and it still doesn't work.
Anyway, I was thinking that the URL was being sent directly to ffmpeg.Unfortunately the ffmpeg backend for Qt multimedia is not documented and QML is not very verbose when there's an error.
@kbarni said in Qt 6.5 MediaPlayer and tcp stream:
Normally TCP is the most low-level protocol
I had a complete mind-mess! I thought (for some reason) you were asking about
ftp:protocol, which has indeed been removed at Qt6, not thetcpyou wrote and I quoted! Consequently ignore my previous!! -
Hi,
Since you mention 6.5, it's likely related to QTBUG-111910.
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Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
Hi,
Since you mention 6.5, it's likely related to QTBUG-111910.
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K kbarni has marked this topic as solved on
