Qt5 Video Playback using XCB Backend

JustinWaters — Fri, 13 Feb 2015 17:40:20 GMT

Has anybody successfully played video in the QtMultimediaWidgets player application while using the xcb backend? I've found a number of posts regarding video playback in Qt5 with the VPU acceleration, but most of them seem to require disabling X11.

When I try using XCB, the video simply hangs while loading the video:

root@imx6qsabresd:~# /usr/share/qt5/examples/multimediawidgets/player/player /BigBuckBunny.avi

Qt Warning: Could not find a location of the system's Compose files. Consider setting the QTCOMPOSE environment variable.

Aiur: 3.0.11

Core: AVI_PARSER_03.05.12 build on Jul 15 2014 02:45:03

mime: video/x-msvideo

file: /usr/lib/imx-mm/parser/lib_avi_parser_arm11_elinux.so.3.1

Content Info:

URI:

file:///BigBuckBunny.avi

Idx File:

/home/root/.aiur/.BigBuckBunny.avi.aidx

Seekable : Yes

Size(byte): 1370826

Movie Info:

Seekable : Yes

Live : No

Duration : 0:00:32.496326000

ReadMode : Track

Track : 2

Track 00 [video_000000] Enabled

Duration: 0:00:32.480000000

Language: und

Mime:

video/mpeg, mpegversion=(int)4, parsed=(boolean)true, width=(int)320, height=(in

t)240, framerate=(fraction)25/1

[INFO] Product Info: i.MX6Q/D/S

vpudec versions :smileyhappy:

plugin: 3.0.11

wrapper: 1.0.46(VPUWRAPPER_ARM_LINUX Build on Feb 12 2015 15:09:45)

vpulib: 5.4.23

firmware: 3.1.1.46056

Track 01 [audio_000000] Enabled

Duration: 0:00:32.496326000

Language: und

Mime:

audio/mpeg, mpegversion=(int)1, framed=(boolean)true, channels=(int)1, rate=(int

)22050, bitrate=(int)0

Beep: 3.0.11

Core: MP3 decoder Wrapper build on Mar 21 2014 15:04:50

mime: audio/mpeg, mpegversion = (int)1

file: /usr/lib/imx-mm/audio-codec/wrap/lib_mp3d_wrap_arm12_elinux.so.3

CODEC: BLN_MAD-MMCODECS_MP3D_ARM_02.13.00_CORTEX-A8 build on Apr 10 2014 15:26:15.

If I set GST_DEBUG=2, I get the following warning over and over again:

aiurdemux /home/justin/work/yocto/build/tmp/work/imx6qsabresd-poky-linux-gnueabi/gst-fsl-plugin/3.0.11-r0/gst-fsl-plugins-3.0.11/src/parser/aiur/src/aiurdemux.c:4095:aiurdemux_push_pad_buffer: Pad video push error type -4

The same video plays fine using gplay, playbin2, and a standard manual gstreamer pipeline. I'm using the head of line for all of the metalayers (include meta-qt5). I synced the repo yesterday. I did have to disable the gstreamer1.0 patches (I'm using gstreamer 0.10) in the qtmultimedia recipe.

Re: Qt5 Video Playback using XCB Backend

JustinWaters — Tue, 17 Feb 2015 16:46:47 GMT

If it helps, here's more information about what I'm currently using:

meta-fsl-arm-extra dizzy

meta-fsl-arm dizzy

meta-qt5 master (commit adeaa6128b665920eb98eb7c064f4aacbd74b873)

Qt5.4

Linux 3.10.17

gstreamer 0.10.36

gst-fsl-plugins 3.0.11

libfslcodec 4.0.1

Re: Qt5 Video Playback using XCB Backend

OtavioSalvador — Tue, 17 Feb 2015 17:20:34 GMT

We are in some projects, for customers, using QtMultimedia. In our case we used the QML based plugin and it works fine.

Check the qmlvideofx or similar and see if it works for you.

Re: Qt5 Video Playback using XCB Backend

JustinWaters — Wed, 18 Feb 2015 15:27:53 GMT

Thank you very much for the reply.

The qmlvideofx player does seem to work. Any clue as to why the non-QML version hangs? I think we can work with the QML-based version moving forward, but understanding the limitations/shortcomings of the other player will be helpful in future projects.

Re: Qt5 Video Playback using XCB Backend

OtavioSalvador — Wed, 18 Feb 2015 15:30:03 GMT

I didn't investigate as our customer is using QML.

topic Re: Qt5 Video Playback using XCB Backend in i.MX Processors

Qt5 Video Playback using XCB Backend

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Re: Qt5 Video Playback using XCB Backend