Archived:Additional settings needed to run DevVideoRecord on N96 (Known Issue)
m (Removed protection from "KIS001471 - Additional settings needed to run DevVideoRecord on N96": Merging into Wiki)
m (moved KIS001471 - Additional settings needed to run DevVideoRecord on N96 to Additional settings needed to run DevVideoRecord on N96 (Known Issue): Merge into wiki.)
Revision as of 08:14, 13 March 2012
To record a video on the Nokia N96, additional settings are needed as the N96 hardware is different from other S60 devices.
The N96 uses hardware codecs which require additional settings compared to other S60 devices. When the DevVideo Record example is run on the Nokia N96, the application fails with the KErrNotReady (-18) error while calling CMMFDevVideoRecord::WritePictureL(), or with KErrNotSupported (-5) if the camera has been set as the video source with CMMFDevVideoRecord::SetSourceCameraL().
How to reproduce
The DevVideo Record example can be used to reproduce the problem on the Nokia N96.
To ensure that MDF DevVideo encoders work on the Nokia N96, call the CMMFDevVideoRecord::SetRateControlOptions() function in MMMFDevVideoRecordObserver::MdvroInitializeComplete before calling CMMFDevVideoRecord::Start().
void CDevvideoExAppUi::MdvroInitializeComplete( TInt aError )
if ( aError != KErrNone )
// TODO: Handle errors
// Set rate control options
rateCtrl.iControl = EBrControlNone;
rateCtrl.iPictureQuality = 0;
rateCtrl.iBitrate = iBitRate;
rateCtrl.iPictureRate = iFrameRate;
rateCtrl.iQualityTemporalTradeoff = 0;
rateCtrl.iLatencyQualityTradeoff = 0;
iDvr->SetRateControlOptions( 0, rateCtrl );
// Start encoding
// Write first input picture
iPicNum = 0;