FAQ

Support Center

TVideoGrabber Video SDK

Multiple instances fail to start and/or "Out of Memory" error

Windows Server pre-requisties

Windows 10 N pre-requisties

New Datastead Encoder

How can I pass FFMpeg options to the new Encoder, e.g. "-movflags empty_moov -strict experimental -frag_duration 4000"?

Codecs

Recommended decoder

Why some codecs do not appear in the "video compressors" list when I recompile the application for x64?

Video window

The aspect ratio is not what I need

Video capture devices

bad quality of HD capture with the Elgato HD 60

Many dropped frames during recording

How can I connect a Basler GigE camera?

Is the Still Image Pin capture supported?

How to apply overlays and perform hardware encoding with the Sensoray 2253 / 3364

Avermedia HD Capture: no video when capturing the HDMI input

Player

Playback quality deteriorated or slowed-down when playing big compressed files

Mixer

Mixer: how I can set the mixer video output size? my cameras are configured as 1280x720, but the output file is 320x240.

Audio

How to get the raw audio samples from the audio capture device, without audio recording nor rendering

No audio when invoking StartPreview() or StartRecording()

Enabling audio with IP cameras and URL sources

Overlays

SetTextOverlay... vs OverlaySelector

How to draw a cross-hair over video frames and move it with the mouse?

C++Builder

When debugging and exiting the app, the debugger reports: warning unknown heap name 0x08000000 / 0x08000000 - Error detected (ILI4581)

When invoking TextOut from the OnFrameBitmap event, how to change the font size?

C++Builder compilation: ilink32 error unresolved external Direct3DCreate9

C# & VB.NET

When trying to install the component on the toolbox I get a "type library could not be loaded" error

VC++

how to make the video window visible in a MFC application

My code that capture frames in burst mode in a GUI application, does not work in a console application

When invoking TextOut from the OnFrameBitmap event, how to change the font size?

Recording

how to record the screen in 4K

How to record a video source to mp4

I specify the HEVC codec with VideoGrabber.Encoder_SetStr(Enc_Video_Codec, "hevc"), but the video is recorded in H264.

IP cameras / URL sources

I am not able to play a RTP stream, e.g. rtp://239.255.0.1:10124

The connection to a RTSP URL always fails

Example of ONVIF and PTZ protocol

ONVIF PTZ not working with some IP cameras

RTSP not working with Reolink IP cameras

Delphi / C++ Builder

Error Reading Form : Error reading <i>PropertyName</i>: Property <i>PropertyName</i> does not exist. Ignore the error and continue? NOTE: Ignoring the error may cause components to be deleted or property values to be lost.

Streaming

How to send the video to Open Broadcaster Software? (OBS)

How to enable UDP streaming through the Multipurpose Encoder?

Sample code

How to display an image over the live RTSP preview

c# & VB.NET

when I create a bitmap from the OnFrameBitmap event, an error occurs after a few seconds

how to make the video window visible in a MFC application

After renaming "VideoGrabberNET.dll", I get errors: "could not load file or assembly 'VideoGrabberNET..." or "System.IO.FileNotFoundException: Could not load file or assembly"

How can I program screen capture using C#

Convert a video frame to Bitmap from the OnFrameBitmap event

When invoking ONVIFSnapshot, how to get the JPEG data from the OnRawVideoSample event in VB.NET?

RTSP/RTMP/HTTP/ONVIF DirectShow Source Filter

Excessive latency with RTSP/H264 stream

ONVIF connection fails

What port should I use for ONVIF?

ONVIF PTZ not working with some IP cameras

RTSP not working with Reolink IP cameras

Invoking Action(RTSP_Action_RecordToNewFileNow, ...) returns and error 0x8007139F

Many dropped frames during recording

I am not able to play a RTP stream, e.g. rtp://239.255.0.1:10124

How to open a SDP stream?

The connection to a RTSP URL always fails

Multiple instances fail to start and/or "Out of Memory" error

How to capture each video frame decoded in real time

On Windows Server 2008 or 2012 the RTSP/RTMP/HTTP/ONVIF Source fails to install or does not work

Windows Server pre-requisties

Windows 10 N pre-requisties

Multipurpose DirectShow Encoder

how to record the screen in 4K

how to push to a Wowza server?

how can I hide the console displaying the log?

The encoding fails when using NVidia NVENC as hardware acceleration for recording

How to record a video source to mp4

Windows 10 N pre-requisties

I specify the HEVC codec with VideoGrabber.Encoder_SetStr(Enc_Video_Codec, "hevc"), but the video is recorded in H264.

How to enable UDP streaming through the Multipurpose Encoder?

H264/HEVC GPU encoding

how to record the screen in 4K

What BIOS setting is required to enable Intel QuickSync when a NVIDIA graphic card is installed?

How to encode by using the Intel QuickSync GPU (QSV)

General

video stops, or black window, when using 4K video sources or several cameras concurrently

Windows Server pre-requisties

Multiple instances fail to start and/or "Out of Memory" error

the video window is not smooth

Windows 10 N pre-requisties

Is there an expiration date for the SDK I am buying?

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Support Center

TVideoGrabber Video SDK

New Datastead Encoder

Codecs

Video window

Video capture devices

Player

Mixer

Audio

Overlays

C++Builder

C# & VB.NET

VC++

Recording

IP cameras / URL sources

Delphi / C++ Builder

Streaming

Sample code

c# & VB.NET

RTSP/RTMP/HTTP/ONVIF DirectShow Source Filter

Multipurpose DirectShow Encoder

H264/HEVC GPU encoding

General

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