diff --git a/src/mod/applications/mod_av/avformat.c b/src/mod/applications/mod_av/avformat.c
index c1e0052530..345a038e77 100644
--- a/src/mod/applications/mod_av/avformat.c
+++ b/src/mod/applications/mod_av/avformat.c
@@ -2564,6 +2564,8 @@ static switch_status_t av_file_write(switch_file_handle_t *handle, void *data, s
 			 if (!context->audio_timer) {
 				 switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Delta of %d detected.  Video timer sync: %" SWITCH_UINT64_T_FMT "/%d %" SWITCH_UINT64_T_FMT "\n", delta, context->audio_st[0].next_pts, context->video_timer.samplecount, new_pts - context->audio_st[0].next_pts);
 			 }
+		 if (new_pts - context->audio_st[0].next_pts <0 && context->audio_st[0].next_pts != 0)
+				 return status;
 			 sample_start = new_pts;
 		 }