I'm new baby for Video Processing use Swift 3. I try to merge multiple videos with AVAssetExportSession, and using AVVideoCompositionCoreAnimationTool to add overlay for final video.
The problem is sometimes the final video is perfect, but sometimes it just give me a black video with sound only even I didn't change anything :(
Anybody who ran into that problem same me please give an idea, thanks!
let mixComposition: AVMutableComposition = AVMutableComposition()
//Add assets here
let mainComposition: AVMutableVideoComposition = AVMutableVideoComposition(propertiesOf: mixComposition)
mainComposition.frameDuration = CMTimeMake(1, 30)
mainComposition.renderSize = renderSize
mainComposition.renderScale = 1.0
mainComposition.animationTool = AVVideoCompositionCoreAnimationTool(postProcessingAsVideoLayer: videoLayer, in: parentLayer)
mainComposition.instructions = instructions
let exportSession: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
exportSession.videoComposition = mainComposition
exportSession.audioMix = audioMix
exportSession.outputURL = outputURL
exportSession.outputFileType = AVFileTypeMPEG4
exportSession.shouldOptimizeForNetworkUse = true
exportSession.exportAsynchronously {
// Ended here
}
Related
I have the following jpg image:
What king of filter should I use in order to filter the outline (margins only) of this image ?
I have tried this:
vtkSmartPointer<vtkJPEGReader> reader = vtkSmartPointer<vtkJPEGReader>::New();
reader->SetFileName(sFile);
reader->SetDataByteOrderToBigEndian();
reader->Update();
vtkSmartPointer<vtkImageDataGeometryFilter> geometryfilter = vtkSmartPointer<vtkImageDataGeometryFilter>::New();
geometryfilter->SetInputConnection(reader->GetOutputPort());
geometryfilter->SetOutputTriangles(1);
geometryfilter->SetThresholdCells(1);
geometryfilter->Update();
Save back to jpg:
vtkSmartPointer<vtkJpegWriter> writer = vtkSmartPointer<vtkJpegWriter>::New();
writer->SetInputConnection(geometryfilter->GetOutputPort());
writer->SetFileName(sFile);
writer->Write();
But it doesn't working. I have also tried:
vtkSmartPointer<vtkImageDataGeometryFilter> geometryfilter = vtkSmartPointer<vtkImageDataGeometryFilter>::New();
geometryfilter->SetInputConnection(reader->GetOutputPort());
geometryfilter->SetOutputTriangles(1);
geometryfilter->SetThresholdCells(1);
geometryfilter->Update();
vtkSmartPointer<vtkOutlineFilter> outline = vtkSmartPointer<vtkOutlineFilter>::New();
outline->SetInputConnection(geometryfilter->GetOutputPort());
outline->SetGenerateFaces(1);
outline->Update();
vtkSmartPointer<vtkJpegWriter> writer = vtkSmartPointer<vtkJpegWriter>::New();
writer->SetInputConnection(outline->GetOutputPort());
writer->SetFileName(sFile);
writer->Write();
Not work that either. Can you help me a little bit ?
To be able to use different templates in a TYPO3 CMS 7.6.18 setup. I include a pageTSConfig.ts file with a backend layout looking like this. (see also this pastebin: https://pastebin.com/BcYKrYKh and this how it looks like in the TYPO3 object browser: https://pastebin.com/LVXqNUZC
### Backend Layouts #####
mod.web_layout.BackendLayouts{
1 {
title = Standaard Layout
config {
backend_layout {
colCount = 2
rowCount = 1
rows {
1 {
columns {
1 {
name = linker_inhoud
colPos = 1
}
2 {
name = midden_inhoud
colPos = 0
}
}
}
}
}
}
}
}
Since the BE-Layout is done with a file, in my TSconfig.ts I have added pagets__0 to it like the manual mentioned. Still this is not working. What Am I missing here? This is a part of the TSconfig I have in place here is the complete config:
page.10.file.stdWrap.cObject = CASE
page.10.file.stdWrap.cObject {
key.data = levelfield:-1, backend_layout_next_level, pagelayout, slide
key.override.field = pagelayout
default = TEXT
default.value = fileadmin/templates/index.html
pagets__0 = TEXT
pagets__0.value = fileadmin/templates/index.html
pagets__1 = TEXT
pagets__1.value = fileadmin/templates/layouts/small_header_page.html
pagets__2 = TEXT
pagets__2.value = fileadmin/templates/layouts/alternatieve_pagina.html
}
All to be included with:
There is a difference between "backend_layout", which is a the name of a real database field that can be fetched by "levelfield" and "pagelayout", which is a kind of virtual field to get rid of the "levelfield" approach.
https://docs.typo3.org/typo3cms/TyposcriptReference/DataTypes/Gettext/Index.html#pagelayout
key.data = pagelayout
should do the whole job for you and only in this case you can use stuff like
pagets__x
to access the actual layout.
So your code should either be:
page.10 = FLUIDTEMPLATE
page.10.file.cObject = CASE
page.10.file.cObject {
key.data = pagelayout
default = TEXT
default.value = fileadmin/templates/index.html
pagets__0 = TEXT
pagets__0.value = fileadmin/templates/index.html
pagets__1 = TEXT
pagets__1.value = fileadmin/templates/layouts/small_header_page.html
pagets__2 = TEXT
pagets__2.value = fileadmin/templates/layouts/alternatieve_pagina.html
}
or it should be
page.10 = FLUIDTEMPLATE
page.10.file.cObject = CASE
page.10.file.cObject {
key.data = levelfield:-1, backend_layout_next_level, slide
key.override.field = backend_layout
default = TEXT
default.value = fileadmin/templates/index.html
1 = TEXT
1.value = fileadmin/templates/layouts/small_header_page.html
2 = TEXT
2.value = fileadmin/templates/layouts/alternatieve_pagina.html
}
But not a mix of both approaches.
Before I tell you what might be wrong with your code, let me explain you a few things.
You have placed your templates in the fileadmin directory. This is not the place where to put these files any longer, because the fileadmin is a public place for resources like images, videos or documents. It might be available for every backend user in the filelist and the editor should not be able to edit the template in any case. The suggested way to handle your templates is to put them into an own extension that can be installed via the extension manager.
In your pastebin snippets, there is a line with userFunc = tx_templavoila_pi1->main_page, you may mixing up stuff in your installation and don't want to use FLUIDTEMPLATE alongside templavoila, because it could be confusing what rendering method is used for what stuff on your page. Better stick to templavoila or Fluid for the entirety of the TYPO3 installation.
Now, you have these lines in your TypoScript:
key.data = levelfield:-1, backend_layout_next_level, pagelayout, slide
key.override.field = pagelayout
There is no field pagelayout in the pages records. The field you rather want to address is backend_layout.
there are a lot of questions asked regarding opencv + H.264 but
none of them gave detailed explanation.
i am using openh264(openh264-1.4.0-win32msvc.dll) along with opencv 3.1(custom build with cmake having ffmpeg enabled) in visual studio, i wanted to save video coming from webcam in mp4 format with H.264 compression
VideoWriter write = VideoWriter("D:/movie.mp4", CV_FOURCC('H', '2',
'6', '4'), 10.0, cv::Size(192, 144), true);
before using openh264, in console window i was seeing an warning message
"Failed to load openh264 library : openh264-1.4.0-win32msvc.dll
please check your environment and/or download from here:
https://github.com/cisco/openh264/releases"
(also video was not been saved)
so i downloaded the dll & kept in a folder with my program file(exe)
now when i run the program, i'm seeing different error
"[OpenH264] this = 0x0DE312C0, warning: bEnabledFrameSkip=0, bitrate can't be controlled for RC_QUALITY_MODE and RC_TIMESTAMP_MODE without enabling skip frame"
(now video is saved, but size is very high! bit rate is around 1200 Kbps)
for me, the sole purpose of using h264 is to reduce the file size.. i think i may have to build openh264 myself with some changes to remove this error, can anyone guide me how? or tell me if there is a way to reduce bit rate somehow through code?
P.S: I tried giving -1 instead of CV_FOURCC(), 'installed codecs' window in my system showed up, i couldn't find h264 or x264 or h264vfw even though i have installed variety of codec packs & h264 from here
Thanks & regards
If you want to control bitrate, You have to use both
encoderParemeters.iRCMode = RC_OFF_MODE;
encoderParemeters.bEnableFrameSkip = true;
Here I am showing all the Openh264 Encoding parameters as an Example:
long nReturnedValueFromEncoder = WelsCreateSVCEncoder(&m_pSVCVideoEncoder);
m_nVideoWidth = 352;
m_nVideoHeight = 288;
SEncParamExt encoderParemeters;
memset(&encoderParemeters, 0, sizeof(SEncParamExt));
m_pSVCVideoEncoder->GetDefaultParams(&encoderParemeters);
encoderParemeters.iUsageType = CAMERA_VIDEO_REAL_TIME;
encoderParemeters.iTemporalLayerNum = 0;
encoderParemeters.uiIntraPeriod = 15;
encoderParemeters.eSpsPpsIdStrategy = INCREASING_ID;
encoderParemeters.bEnableSSEI = false;
encoderParemeters.bEnableFrameCroppingFlag = true;
encoderParemeters.iLoopFilterDisableIdc = 0;
encoderParemeters.iLoopFilterAlphaC0Offset = 0;
encoderParemeters.iLoopFilterBetaOffset = 0;
encoderParemeters.iMultipleThreadIdc = 0;
encoderParemeters.iRCMode = RC_BITRATE_MODE;
encoderParemeters.iMinQp = 0;
encoderParemeters.iMaxQp = 52;
encoderParemeters.bEnableDenoise = false;
encoderParemeters.bEnableSceneChangeDetect = false;
encoderParemeters.bEnableBackgroundDetection = true;
encoderParemeters.bEnableAdaptiveQuant = false;
encoderParemeters.bEnableFrameSkip = true;
encoderParemeters.bEnableLongTermReference = true;
encoderParemeters.iLtrMarkPeriod = 20;
encoderParemeters.bPrefixNalAddingCtrl = false;
encoderParemeters.iSpatialLayerNum = 1;
SSpatialLayerConfig *spartialLayerConfiguration = &encoderParemeters.sSpatialLayers[0];
spartialLayerConfiguration->uiProfileIdc = PRO_BASELINE;//;
encoderParemeters.iPicWidth = spartialLayerConfiguration->iVideoWidth = m_nVideoWidth;
encoderParemeters.iPicHeight = spartialLayerConfiguration->iVideoHeight = m_nVideoHeight;
encoderParemeters.fMaxFrameRate = spartialLayerConfiguration->fFrameRate = (float)30;
encoderParemeters.iTargetBitrate = spartialLayerConfiguration->iSpatialBitrate = 500000;
encoderParemeters.iTargetBitrate = spartialLayerConfiguration->iMaxSpatialBitrate = 500000;
spartialLayerConfiguration->iDLayerQp = 24;
//spartialLayerConfiguration->sSliceCfg.uiSliceMode = SM_SINGLE_SLICE;
spartialLayerConfiguration->sSliceArgument.uiSliceMode = SM_SINGLE_SLICE;
nReturnedValueFromEncoder = m_pSVCVideoEncoder->InitializeExt(&encoderParemeters);
Hope it will help you.
You can simply controlled bit rate using RC_BITRATE_MODE and enabling bEnableFrameSkip in Openh264.
I am Wrting code to capture image from camera.Below is the code I have written.
Here method CapturePhotoToStorageFileAsync doesnot return.
auto MediaCap = ref new Windows::Media::Capture::MediaCapture();
auto ImageProp = ref new Windows::Media::Capture::ImageEncodingProperties ();
ImageProp->Height = 240;
ImageProp->Width = 320;
ImageProp->Subtype = "JPEG";
Windows::Storage::StorageFile^ strFile;
auto res = MediaCap->CapturePhotoToStorageFileAsync(ImageProp,strFile);
res->Completed = ref new AsyncActionCompletedHandler([](IAsyncAction ^action)
{
//action->GetResults();
//action->Start();
///action->Close();
});
res->Start();
Am I missing something here??
Did you want to show UI to the user or just silently capture? The only C++ camera sample I've found uses CameraCaptureUI and CaptureFileAsync - then the operation is getting a StorageFile^ back.
If you're deliberately using CapturePhotoToStorageFileAsync, check your capabiities.
The Issue is resolved
I Added code for
InitializeAsync()
Created file to be used to store image
using
Windows::Storage::StorageFileRetrievalOperation^ CreateFileOp = Windows::Storage::KnownFolders::PicturesLibrary->CreateFileAsync("Test.jpg");
I found Java script article and implemented in c++.
http://code.msdn.microsoft.com/windowsdesktop/Media-Capture-Sample-adf87622/sourcecode?fileId=43837&pathId=1754477665
Ok I have written some basic generic webservices before but I have never tried to consume a 3rd party one.
The one I am trying to consume is
http://opendap.co-ops.nos.noaa.gov/axis/webservices/predictions/wsdl/Predictions.wsdl
I am not getting any results back from this what so ever and cannot figure out why.
More odd is it is not even reaching PredictionsClient_getPredictionsAndMetadataCompleted when I put a break point in the code it doesn't even reach it.
Any suggestions would be greatly appreciated
public void Bouy(double meters)
{
PredictionService.Parameters PredictionParams = new PredictionService.Parameters();
PredictionService.PredictionsPortTypeClient PredictionsClient = new PredictionService.PredictionsPortTypeClient();
GeoCoordinateWatcher gc = new GeoCoordinateWatcher(GeoPositionAccuracy.Default);
//gc.Position.Location.Latitude, gc.Position.Location.Longitude
GeoCoordinate myLocation = new GeoCoordinate(27.931631,-82.802582);
foreach (var bl in BouyLocation.GetAll())
{
GeoCoordinate otherLocation = new GeoCoordinate(bl.Lat, bl.Lon);
PredictionParams.beginDate = DateTime.Now.ToString("yyyyMMdd");
PredictionParams.endDate = DateTime.Now.AddDays(1.0).ToString("yyyyMMdd");
PredictionParams.stationId = bl.LocationID;
PredictionParams.timeZone = 0;
PredictionParams.unit = 1;
PredictionParams.dataInterval = 6;
PredictionsClient.getPredictionsAndMetadataCompleted += new EventHandler<PredictionService.getPredictionsAndMetadataCompletedEventArgs>(PredictionsClient_getPredictionsAndMetadataCompleted);
PredictionsClient.getPredictionsAndMetadataAsync(PredictionParams);
double mymeters = myLocation.GetDistanceTo(otherLocation);
if (mymeters < meters)
{
TextBlock DynTextBlock = new TextBlock
{
Name = "Appearance" + bl.LocationID,
Text = bl.LocationName + PredictionResult,
TextWrapping = System.Windows.TextWrapping.Wrap,
Margin = new Thickness(12, -6, 12, 0),
Style = (Style)Resources["PhoneTextSubtleStyle"]
};
DynamicAppearance.Children.Add(DynTextBlock);
this.nearByLocations.Add(new BouyLocationModel() { LocationName = bl.LocationName, LocationID = bl.LocationID, Lat = bl.Lat, Lon = bl.Lon });
}
}
var test = nearByLocations;
}
void PredictionsClient_getPredictionsAndMetadataCompleted(object sender, PredictionService.getPredictionsAndMetadataCompletedEventArgs e)
{
string err = e.Error.ToString();
PredictionResult = e.Result.ToString();
}
Loooking at the code you have here I think that you have used the importing of a ServiceReference to auto build the classes for you?
Unfortunately I have found that this is rather temperamental on WP7 and the only way I actually got it to work was when I connected it to a Microsoft WCF service. Connecting to anything else just doesn't work.
If you do google searches there are various pages talking about the fact it doesn't work and ways around it (which I couldn't get to work).
However, there are ways around it but it isn't as simple as the auto-generated stuff. Basically you do things manually.
Although there are other ways to manually create the web service what I did was follow the information in the following which worked well: http://zetitle.wordpress.com/2010/10/14/using-reactive-extensions-with-webrequest/
You will need to parse the response yourself but XML to LINQ works really well for this.
Hope that helps, or maybe someone will have the solution as it is something I am interested in knowing how to get working too