FAQ

TVideoGrabber Video SDK

• 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?
• 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
  • Lame MP3 encoder: where to download it and how to install it?
  • How to get the raw audio samples from the audio capture device, without audio recording nor rendering
• 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# & 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 to mp4 with TVideoGrabber and the Multipurpose Encoder
• IP cameras / URL sources
  • I am not able to play a RTP stream, e.g. rtp://239.255.0.1:10124
• 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.

RTSP/RTMP/HTTP/ONVIF DirectShow Source Filter

• ONVIF connection fails
• What port should I use for ONVIF?
• 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?

Multipurpose DirectShow Encoder

• 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 to mp4 with TVideoGrabber and the Multipurpose Encoder

c# & VB.NET

• when I create a bitmap from the OnFrameBitmap event, the app crashes 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#

General

• the video window is not smooth

H264/HEVC GPU encoding

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