[FFmpeg-trac] #4189(undetermined:new): webcam overlay audio desync Windows 7

[FFmpeg]

#4189: webcam overlay audio desync Windows 7
-------------------------------------+-------------------------------------
             Reporter:  Kakariko__   |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by Kakariko__):

 Problem is with some delay at the start.

 Here is no problems


 {{{
 <22:07:38.303> [FFmpeg] Input #0, dshow, from 'video=UScreenCapture':
   Duration: N/A, start: 14057.561000, bitrate: N/A
     Stream #0:0: Video: rawvideo, bgr24, 640x480, 30 tbr, 10000k tbn, 30
 tbc
 Input #1, dshow, from 'video=FFsource':
   Duration: N/A, start: 14057.586000, bitrate: N/A
     Stream #1:0: Video: rawvideo (NV12 / 0x3231564E), nv12, 640x480, 30
 tbr, 10000k tbn, 30 tbc
 }}}

 at 22:07:38 there is info about Input #0 and Input #1. But here info about
 Input #1 is delayed about 3 seconds and this 3 seconds means video delay.


 {{{
 <22:08:36.778> [FFmpeg] Input #0, dshow, from 'video=UScreenCapture':
   Duration: N/A, start: 14116.020000, bitrate: N/A
     Stream #0:0: Video: rawvideo, bgr24, 640x480, 30 tbr, 10000k tbn, 30
 tbc

 <22:08:39.178> [FFmpeg] [dshow @ 028de340] real-time
 buffer[UScreenCapture] too full (64% of size: 100000000)! frame dropped!

 <22:08:39.278> [FFmpeg] [dshow @ 028de340] real-time
 buffer[UScreenCapture] too full (67% of size: 100000000)! frame dropped!

 <22:08:39.428> [FFmpeg] [dshow @ 028de340] real-time
 buffer[UScreenCapture] too full (70% of size: 100000000)! frame dropped!

 <22:08:39.578> [FFmpeg] [dshow @ 028de340] real-time
 buffer[UScreenCapture] too full (72% of size: 100000000)! frame dropped!

 <22:08:39.629> [FFmpeg] Input #1, dshow, from 'video=XSplitBroadcaster':
   Duration: N/A, start: 14117.228000, bitrate: N/A
     Stream #1:0: Video: rawvideo, bgr0, 320x240, 9.67 tbr, 10000k tbn,
 10000k tbc
 }}}


 is there any way to fix it?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4189#comment:3>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker