The following code:
string pathToVideoFile = "O:\\Byblioteka\\MAH01238.MP4";
var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
ffMpeg.ConvertMedia(pathToVideoFile, "nowyplik.mp4", "Format.mp4");
Is resulting in the following error:
An unhandled exception of type 'NReco.VideoConverter.FFMpegException' occurred in NReco.VideoConverter.dll
Additional information: nowyplik.mp4: Invalid argument (exit code: 1)
How may I resolve this 'NReco.VideoConverter.FFMpegException' error?
This worked for me.
var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
ffMpeg.GetVideoThumbnail(url, destinationThumbPath);
ffMpeg.ConvertMedia(url, destinationVidoePath, Format.mp4);
I'm taking a risk answering this question since it's vague, and I don't know where you downloaded the DLL from.
But from what I know, the 3rd argument should be "mp4", not "Format.mp4":
ffMpeg.ConvertMedia(pathToVideoFile, "nowyplik.mp4", "mp4");
This could cause this exception.
Related
Hi I'm taking back the lead on a project for an Excel plugin. But I ran into a kind of strange error:
System.Runtime.InteropServices.COMException (0x800A03EC): Parameter not valid at Microsoft.Office.Interop.Excel._Chart.FullSeriesCollection(Object Index)
The corresponding line is:
chart.FullSeriesCollection(1).DataLabels.ShowValue = true;
Any idea of what's wrong in there?
I am trying to create and connect to a WLAN profile using Native WiFi (https://managedwifi.codeplex.com/). I am able to view all the Network BSS List and their parameters. However, when I am trying to create/overwrite a WLAN profile, I get the below mentioned error message (Error#1):
An unhandled exception of type 'System.ComponentModel.Win32Exception' occurred in ManagedWifi.dll.
Additional information: The network connection profile is corrupted
However, when I created a profile normally from "Network and Sharing Center" of the Windows 7 control panel and then tried to connect using the ManagedWiFi, I get another error message(Error#2):
An unhandled exception of type 'System.ArgumentException' occurred in mscorlib.dll
Additional information: Type 'NativeWifi.Wlan+WlanReasonCode' cannot be marshaled as an unmanaged structure; no meaningful size or offset can be computed.
I noticed that this error occurs even if I try to connect/disconnect to a WLAN profile from the "Network and Sharing Center", with the windows application running in the background.
Here is the sample code that I am using:
Dim profileName As String = GlobalVariables.ssidname ' Provides the selected SSID name from the Network BSS List
Dim hexval As String = StringToHex(GlobalVariables.ssidname) ' Function to get the hexadecimal value for a provided string
Dim key As String = TextBox1.Text ' Security key from the textbook provided
Dim profileXml As String = String.Format("<?xml version=""1.0""?><WLANProfile xmlns=""http://www.microsoft.com/networking/WLAN/profile/v1""><name>{0}</name><SSIDConfig><SSID><hex>{1}</hex><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><MSM><security><authEncryption><authentication>open</authentication><encryption>WEP</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>networkKey</keyType><protected>false</protected><keyMaterial>{2}</keyMaterial></sharedKey><keyIndex>0</keyIndex></security></MSM></WLANProfile>", 'GlobalVariables.ssidname, hexval, TextBox1.Text)
wlanIface.SetProfile(Wlan.WlanProfileFlags.AllUser, profileXml, True) 'Error#1 occurs here
wlanIface.Connect(Wlan.WlanConnectionMode.Profile, Wlan.Dot11BssType.Any, profileName) 'Error#2 occurs here
From the forum "Type Native Wifi.Wlan + WlanReasonCode cannot be marshaled error", the issue (Error#2) seems to be within the WlanAPI.cs, where there is a line of code that checks for the size of the return code. This is the line:
int expectedSize = Marshal.SizeOf(typeof(Wlan.WlanReasonCode));
if (notifyData.dataSize >= expectedSize)
{
Wlan.WlanReasonCode reasonCode = (Wlan.WlanReasonCode)Marshal.ReadInt32(notifyData.dataPtr);
if (wlanIface != null)
wlanIface.OnWlanReason(notifyData, reasonCode);
}
Changing the above code to the below seems to fix the issue.
//int expectedSize = Marshal.SizeOf(typeof(Wlan.WlanReasonCode));
if (notifyData.dataSize >= 0)
{
Wlan.WlanReasonCode reasonCode = (Wlan.WlanReasonCode)Marshal.ReadInt32(notifyData.dataPtr);
if (wlanIface != null)
wlanIface.OnWlanReason(notifyData, reasonCode);
}
However, I am not sure on how to add this fix to my solution. I installed the ManagedWiFi from the NuGet Package Manager. Hence, not sure how to change the WlanApi.cs file. Any help regarding the above mentioned two issues are much appreciated.
The issue (Error#1) is now resolved. The profilexml file format was different for me. Here is the profilexml after I changed it.
Dim profileXml As String = String.Format("<?xml version=""1.0""?><WLANProfile xmlns=""http://www.microsoft.com/networking/WLAN/profile/v1""><name>{0}</name><SSIDConfig><SSID><hex>{1}</hex><name>{0}</name></SSID></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><MSM><security><authEncryption><authentication>WPA2PSK</authentication><encryption>AES</encryption><useOneX>false</useOneX></authEncryption><sharedKey><keyType>passPhrase</keyType><protected>false</protected><keyMaterial>{2}</keyMaterial></sharedKey></security></MSM></WLANProfile>", GlobalVariables.ssidname, hexval, TextBox1.Text)
Also the second issue (Error#2) was resolved when I uninstalled ManagedWiFi package from my solution and added the whole ManagedWiFi project to the solution. Then I made the change in WlanApi.cs as mentioned in SimpleWiFi Or Type Native Wifi.Wlan + WlanReasonCode cannot be marshaled error.
I had a simpler task (read the SSID of the connected network), which was throwing the same error.
I solved it by switching to using SimpleWiFi entirely and ignore the ManagedWifi package.
Glancing at the source code, it looks like SW is a fixed reimplementation of some of the functionality in MW.
I am hoping that someone who has worked with ArangoDB and .Net and C# can help me out.
When I call ArangoClient.AddConnection() an exception gets thrown (of type 'System.ArgumentException' occurred in mscorlib.dll). The message is "An item with the same key has already been added."
The call to ArangoClient is: ArangoClient.AddConnection("127.0.0.1", 8529, false, "NancyTest", "NancyTest", "root");
Any ideas?
You most probably already created a connection with specified alias. With a driver version 0.9.0 and higher you can check if the specified alias already exists through ASettings.HasConnection(string alias) static method.
Update: I downloaded Ramone project, added it to my project and then ran the application again with debugger. The error is shown below:
public MediaTypeWriterRegistration GetWriter(Type t, MediaType mediaType)
{
...
CodecEntry entry = SelectWriters(t, mediaType).FirstOrDefault(); => this line throws error
...
}
Error occurs in CodecManager.cs. I am trying to figure out why it does not recognize json-patch media type. Could it be because writer is not being registered correctly? I am looking into it. If you figure out the problem, please let me know. Since you are the author of the library, it will be easier for you to figure out the issue. I will have to go through all the code files and methods to find the issue. Thanks!
I was excited to know that Ramone library supports json-patch operations but when I tried it, I got following error:
415- Unsupported Media Type
This is the same error that I get when I use RestSharp. I thought may be RestSharp does not support json-patch and errors out so I decided to try Ramone lib but I still get same error. Endpoint has no issues because when I try same command using Postman, it works but when I try it programmatically in C#, it throws unsupported media type error. Here is my code:
var authenticator = new TokenProvider("gfdsfdsfdsafdsafsadfsdrj5o97jgvegh", "sadfdsafdsafdsfgfdhgfhehrerhgJ");
JsonPatchDocument patch = new JsonPatchDocument<MetaData>();
patch.Add("/Resident2", "Boyle");
//patch.Replace("/Resident", "Boyle");
RSession = RamoneConfiguration.NewSession(new Uri("https://api.box.com"));
RSession.DefaultRequestMediaType = MediaType.ApplicationJson;
RSession.DefaultResponseMediaType = MediaType.ApplicationJson;
Ramone.Request ramonerequest = RSession.Bind("/2.0/files/323433290812/metadata");
ramonerequest.Header("Authorization", "Bearer " + authenticator.GetAccessToken(code).AccessToken);
//var ramoneresponse = ramonerequest.Patch(patch); //results in error: 405 - Method Not Allowed
var ramoneresponse = ramonerequest.Put(patch); //results in error: 415 - Unsupported Media Type
var responsebody = ramoneresponse.Body
Endpoint information is available here: http://developers.box.com/metadata-api
I used json-patch section in the following article as a reference:
http://elfisk.dk/Ramone/Documentation/Ramone.pdf
By the way I tried Patch() method (as shown in above ref. article) but that resulted in "Method not allowed" so I used Put() method which seems to work but then errors out because of json-patch operation.
Any help, guidance, tips in resolving this problem will be highly appreciated. Thanks much in advance.
-Sham
The Box documentation says you should use PUT (which is quite a bit funny). The server even tells you that it doesn't support the HTTP PATCH method (405 Method Not Allowed) - so PUT it must be.
Now, you tell Ramone to use JSON all the time (RSession.DefaultRequestMediaType = MediaType.ApplicationJson), so you end up PUT'ing a JSON document to Box - where you should be PUT'ing a JSON-Patch document.
Drop the "RSession.DefaultRequestMediaType = MediaType.ApplicationJson" statement and send the patch document as JSON-Patch with the use of: ramonerequest.ContentType("application/json-patch+json").Put(...).
I am in the final stages of porting some code into my framework.
The latest problem is very similar to this one I posted recently ( Strange "The type arguments for method cannot be inferred from the usage." ), whereby text enclosed in '<' and '>' in the listing I am porting code is missing.
The latest offending line is:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);
I get the following error from the compiler:
The type arguments for method 'SlimDX.Direct3D10.Device.OpenSharedResource(System.IntPtr)' cannot be inferred from the usage. Try specifying the type arguments explicitly.
I tried to fix this myself by changing my code to:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain<SlimDX.Direct3D11.Resource>(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);
... but now I get an even stranger run-time error:
"Error: Method 'SlimDX.Direct3D11.Resource.FromPointerReflectionThunk' not found."
Initial research indicates I might have stumbled into something which is way above my head: http://www.gamedev.net/topic/542095-slimdx-need-help-from-nativemanaged-interop-expert/
All I am trying to do is port this code into my framework: http://www.aaronblog.us/?p=36 ... which is all about drawing text in SlimDX with DX11.
At some point I hope to have figured out how to genericise this code into my framework. It is heavy going though.
I'm using SlimDX SDK (January 2012).
Look at the last post in the gamedev.net thread you referenced -- it says that you can fix the problem by specifying the type argument as Texture2D.
So you might try:
using (var resource = SlimDX.Direct3D11.Resource.FromSwapChain<Texture2D>(swapChain, 0))
renderTarget = new SlimDX.Direct3D11.RenderTargetView(graphics, resource);