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Author Topic: FFGrab4Laz = How to record with FFmpeg and Lazarus  (Read 19330 times)

metis

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Re: FFGrab4Laz = How to record with FFmpeg and Lazarus
« Reply #15 on: March 03, 2021, 02:48:23 pm »
Quote
So it is probably caused by the CPU load...
It's quite easy to differ, where this AudioLatency comes from:

If You hear the Sound asynchron, while watching the Stream, it's the AudioLatency of Your System.
To improve that, You can:
- optimize Your SystemSettings for Audio (e.g. Priority)
- lower the AudioQuality in Your SystemSettings (SampleFormat, SampleRate)
- use a better/faster SoundCard and/or use a better/faster SoundDriver

If You hear the Sound synchron, but the recorded File is asynchron, it's the CPU-Load.
In this Case, You have to try around to optimize the FFmpeg-CommandLine for Your PC.

To check the AudioLatency on Windows, I use the 'DPC Latency Checker v1.4.0' by Thesycon.
It's not available any more on the Thesycon-Site, but it can still be downloaded, e.g. here.
« Last Edit: March 03, 2021, 02:54:11 pm by metis »
Life could be so easy, if there weren't those f*** Details.
My FFmpeg4Lazarus = FFPlay4Laz + FFGrab4Laz + FFInfo4Laz

metis

  • Sr. Member
  • ****
  • Posts: 300
Re: FFGrab4Laz = How to record with FFmpeg and Lazarus
« Reply #16 on: November 01, 2022, 03:25:42 pm »
#FFmpeg-WinXP32-Builds
For those, who cannot be w/o their beloved WinXP-Machine (like me :D):
(The others may please laugh quietly)

Here are the latest FFmpeg-Releases, built by Reino to still be compatible with WinXP 32-bit:
https://rwijnsma.home.xs4all.nl/files/ffmpeg/?C=M;O=D
(static/shared/dev)
« Last Edit: November 02, 2022, 01:05:07 pm by metis »
Life could be so easy, if there weren't those f*** Details.
My FFmpeg4Lazarus = FFPlay4Laz + FFGrab4Laz + FFInfo4Laz

 

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