[FAQ]Cause: Failed to avio_open (error=-13)  

[FAQ]Cause: Failed to avio_open (error=-13)

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This error can occur as a false alarm, if Avast software is running. When the error appears, press Allow App, and the error disappears and oCam will continue working any problem.

 

If the pop-up window asking wheter to allow app does not appear

Click the + ALLOW APP button in Menu -> Settings -> Blocked and Allowed Apps and select oCam to add it.

If oCam is added to the list of allowed apps, you will be able to record without any problem.

 

or, you can turn off Ransomware Shield off instead as follows.

Either way should be fine.


About

This is a blog to share a variety of tips and news associated with OhSoft.

Archives

  1. [HOWTO]oCam main screen configuration and features
  2. [HOWTO]Record your screen
  3. [HOWTO]Record only sound
  4. [HOWTO]Capture screen
  5. [HOWTO]Resizing the recording area
  6. [HOWTO]Setting codec-selecting video codec
  7. [HOWTO]Setting Codec-Selecting Video External Codec (VFW)
  8. [HOWTO]Setting codec-Setting audio quality of audio codec
  9. [HOWTO]Record microphone and system sounds
  10. [HOWTO]Game recording
  11. [HOWTO]Setting up oCam - Record - General tab
  12. [HOWTO]Setting up oCam - Record - Game Tab
  13. [HOWTO]Setting up oCam - Record - Resize
  14. [HOWTO]Setting up oCam - Sound
  15. [HOWTO]Setting up oCam - Capture
  16. [HOWTO]Setting up oCam - Animated GIF
  17. [HOWTO]Setting up oCam - Hotkeys
  18. [HOWTO]Setting Up oCam - Effect - Click Effect
  19. [HOWTO]oCam settings- Effect - Highlight effect
  20. [HOWTO]oCam settings - Effect - Cursor Size
  21. [HOWTO]Setting up oCam-Save
  22. [HOWTO]How to reduce the size of recorded video files during game recording (For NVIDIA codec)
  23. [HOWTO]Setting the frame rate mode - VFR (Variable frame rate) or CFR (Constant frame rate)
  24. [HOWTO]Frequently Asked Questions about Variable frame rate (VFR) and Constant frame rate (CFR)
  25. [HOWTO]How to reset oCam's settings
  26. [Tips]How to record the microphone and computer sound together during recording (Windows Vista, 7, 8, 10)
  27. [Tips]How to record sound when using the USB audio interface
  28. [Tips]Rename files saved when recording, recording, or capturing
  29. [Tips]Installing oCam in a Different Path
  30. [Tips]How to record what you hear while recording
  31. [Tips]Download external codecs
  32. [Tips]How to improve the recording quality and sound quality of oCam
  33. [Tips]How to make recorded video recoverable even if app is forcibly terminated during recording
  34. [Tips]Using the x264vfw External Codec
  35. [Tips]Lossless recording-using x264vfw
  36. [Tips]Nox App (Android Player) Solution for the rack that occurs badly when recording a game
  37. [Tips]To use an external codec - Xvid codec
  38. [Tips]Adding a watermark
  39. [Tips]Tips for adjusting to elaborate the recording area window
  40. [Tips]To move the recording area when you recording
  41. [Tips]To set the image quality at the time of recording (from high quality to low quality)
  42. [Tips]In Windows 7 and later, useful tips during microphone recording
  43. [Tips]Way to record the sound of the microphone and the computer together at the time of recording (of Windows Vista, 7,8)
  44. [FAQ]g_pDSCapture-> CreateCaptureBuffer (hr = 0x88780064) error appears (Windows XP)
  45. [FAQ]When you start recording, Error message appears Failed to initialize sound library. Check the Windows Audio service is running.
  46. [FAQ]If you get an error 'The endpoint device is already in use' at the start of recording
  47. [FAQ]If sound comes from only one speaker when recording microphone
  48. [FAQ]If you get an error when installing oCam
  49. [FAQ]Recording does not start with error message 'Failed to url_fopen'
  50. [FAQ]Error appears when recording starts 'Failed to av_image_alloc'
  51. [FAQ]Automatic shutdown after a few seconds after running oCam
  52. [FAQ]7 Days to die Game can't recognize game recording (AntiCheat related)
  53. [FAQ]Game bounces immediately after starting Minecraft recording with oCam (Nvidia graphics card)
  54. [FAQ]The sound becomes loud or torn when playing back the recorded video on the daum pot player
  55. [FAQ]Workaround for voice sync when editing in Adobe Premiere
  56. [FAQ]'Failed to get path of 64-bit Common Files directory' Error when installing oCam
  57. [FAQ]Error while writing video frame (error = -28)
  58. [FAQ]Please do not install absolutely portable version.
  59. [FAQ]What is a digital container format and codec?
  60. [FAQ]Container format and video codecs that are support?
  61. [FAQ]System is slow at the time of recording.
  62. [FAQ]Please let me disable the deep screen function when avast vaccine has been installed.
  63. [FAQ]Can I save to mp3 only the sound of the computer system?
  64. [FAQ]When you are recording, and how to ensure that does not contain the main window
  65. [FAQ]WASRecord: pAudioClient->Initialize failed. (hr=0x80070005) Error
  66. [FAQ]'is dangerous, so Chrome has blocked it.' Google Chrome Not Downloading Files
  67. [FAQ]Cause: Failed to avio_open (error=-13)

Program

  1. oCam
  2. VirtualDVD
  3. CoffeeZip
  4. SecretFolder
  5. CapturePlus

OhSoft Blog - OhSoft.net.

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Additional tips

[HOWTO]Setting up oCam - Record - General tab

Click Tools-Options in the oCam menu to display the following settings window. Learn about the Recording-General tab.

 
Include the cursor

- It is checked by default. If checked, the mouse cursor of recorded video is included. If not checked, the mouse cursor of recorded video is not included.

 

 


Hide drag cursor in recording area

-By default, the check is cleared. If checked, the drag cursor in the middle of the recording area disappears.


Frames Per Second (FPS)
- It is set to 30 by default and can be up to 120 FPS. 30 FPS is suitable for recording general screens. It is recommended to record 60 FPS or more for racing games or games that change screens rapidly during game recording.


Among the built-in codecs, MPEG-2 and MPEG-1 codecs are fixed at 30 FPS without being affected by the codec setting.

Keyframe interval
- By default, it is set to 5. If the keyframe interval is 5, keyframes are generated every 5 seconds, if 1, every 1 second, if 2, every 2 seconds, if n, then every second.

Decoder Resolution Compatibility
- Some video players have a problem with blurry playback of video files that are not set to a specific resolution size. (For example, bear player)

By default, the width is set to a multiple of 8, and the vertical is set to a multiple of 4. If the horizontal size of the recording area specified by the user does not fit to the multiple of 8, it is forced to a multiple of 8. The vertical size of the recording area does not fit to the multiple of 4. If not, the vertical size is applied in multiples of four.

For example, if the decoder resolution is set to "multiple of 8 and vertical of 4" and the recording area is 427x241, the horizontal size is 427, but since it is not divided by 8, the horizontal resolution is corrected to divide by 8 Is 424, and the vertical size is not divided by 4, so it is applied to 240 so that the recording area is finally set to 424x240.


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