[FFmpeg-devel] [PATCH] When using ffmpeg to record screen, set the operating system time and set the system time backward. Stop screen recording, unable to save video.

[houlei at uniontech.com]

From: Hou Lei <houlei at uniontech.com>

Signed-off-by: Hou Lei <houlei at uniontech.com>
---
 libavdevice/xcbgrab.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/libavdevice/xcbgrab.c b/libavdevice/xcbgrab.c
index be5d5ea2cf..7e886064fe 100644
--- a/libavdevice/xcbgrab.c
+++ b/libavdevice/xcbgrab.c
@@ -208,7 +208,16 @@ static int64_t wait_frame(AVFormatContext *s, AVPacket *pkt)
     for (;;) {
         curtime = av_gettime();
         delay   = c->time_frame - curtime;
-        if (delay <= 0)
+
+        //When the user changes the operating system time, can synchronization be forced here?
+        /*
+        if (delay > 10) {
+           c->time_frame = curtime + c->frame_duration;
+           break;
+        }
+        */
+        //When the user changes the operating system time, add timeout judgment.
+        if (delay <= 0 || delay > 10)
             break;
         av_usleep(delay);
     }
-- 
2.20.1