On Fri, Mar 22, 2013 at 3:36 PM, Ramakanthreddy_Kesireddy < ramakanthreddy_kesire...@mahindrasatyam.com> wrote:
> Any pointers for the below issue... > am facing the below issue on Nvidia tegra3 board. > It's possible that the Qt multimedia implementation is picking up the s/w decoder for decoding your media. If the internal Qt implementation is using some sort of a auto-plugger like mechanism from gstreamer (playbin/decodebin) then it might not be picking up the h/w decoder because of it's 'rank'. If the h/w decoder's rank is lesser than the s/w decoder's, then it'll pick up the s/w decoder. You can try increasing the rank of your h/w decoder and see if it helps. Or maybe remove the s/w decoder altogether, if possible, in which case it'll be forced to use the h/w decoder. Changing the rank, will require you to change your h/w decoders code and recompile. Basically set it's rank to something higher than GST_RANK_PRIMARY and recompile your h.w decoder plugin (read gstreamer docs for how exactly to do this, it's not much, just a few lines of code). I'm shooting in the dark here (about the rank thing), so I could be completely wrong. HTH, -mandeep > > Br, > Ramakanth > > ________________________________________ > From: Ramakanthreddy_Kesireddy > Sent: Thursday, March 21, 2013 3:18 PM > To: Thiago Macieira; interest@qt-project.org > Subject: RE: [Interest] gstreamer is not enabled in Qt5 > > Hi, > > Thanks a lot. I could fix the gstreamer issue with 0.10.36. > Now gstreamer is enabled with 0.10.36. > > using below command, we can run sample mp4 video(HDvideo and normal video) > on tegra3 successfully. > gst-launch filesrc location=video.mov ! qtdemux name=demux demux.video_00 > ! nv_omx_h264dec ! nv_gl_eglimagesink demux.audio_00 ! nv_omx_aacdec ! > alsasink device=hw:0,0. > > However, using QtQuick Mediaplayer element and sample application > qmlvideofx in Qtmultimedia examples, > it throws > Warning:a lot of buffers are being dropped" and videoframes are missing > while playing video. > > Could you please confirm if QtMultimedia uses nv_omx_h264dec(hardware > decoder) to play video or how to resolve this issue? > > Thanks and Regards, > Ramakanth > > > ________________________________________ > From: interest-bounces+ramakanthreddy_kesireddy= > mahindrasatyam....@qt-project.org[interest-bounces+ramakanthreddy_kesireddy= > mahindrasatyam....@qt-project.org] on behalf of Thiago Macieira [ > thiago.macie...@intel.com] > Sent: Tuesday, March 19, 2013 8:30 PM > To: interest@qt-project.org > Subject: Re: [Interest] gstreamer is not enabled in Qt5 > > On terça-feira, 19 de março de 2013 12.03.48, Ramakanthreddy_Kesireddy > wrote: > > I couldnot find gstreamer 0.10.38..So I installed 0.10.36 as gstreamer > > should be <1.0 but still getting the same error as mentioned below. > > > > Any pointers to enable gstreamer in configure verbose output? > > You've already done that. Your gstreamer is broken. > > This is not a Qt problem. You need to fix your gstreamer header bugs > before it > will compile. > > As you can see here: > > http://cgit.freedesktop.org/gstreamer/gst-plugins-base/tree/gst-libs/gst/interfaces/propertyprobe.h?id=RELEASE-0.10.36 > > gst/interfaces/propertyprobe.h in version 0.10.36 does not have an include > for > global.h. Your headers are either corrupt or have been modified by someone > else. Track the change down and fix it. > -- > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center > > ________________________________ > > DISCLAIMER: > This email (including any attachments) is intended for the sole use of the > intended recipient/s and may contain material that is CONFIDENTIAL AND > PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or > distribution or forwarding of any or all of the contents in this message is > STRICTLY PROHIBITED. If you are not the intended recipient, please contact > the sender by email and delete all copies; your cooperation in this regard > is appreciated. > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
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