From fe92e79efc76a625b83516b0b60ec7ad8e7ab574 Mon Sep 17 00:00:00 2001
From: Adrian Shum <adrian@cshum.com>
Date: Sat, 22 Oct 2022 09:53:42 +0800
Subject: [PATCH] feat(ffmpeg): select frame by duration and float position

---
 ffmpeg/ffmpeg.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ffmpeg/ffmpeg.go b/ffmpeg/ffmpeg.go
index 006008e..b3cec57 100644
--- a/ffmpeg/ffmpeg.go
+++ b/ffmpeg/ffmpeg.go
@@ -106,6 +106,7 @@ func (av *AVContext) SelectPosition(f float64) (err error) {
 
 func (av *AVContext) SelectDuration(ts time.Duration) (err error) {
 	if ts > 0 {
+		av.selectedDuration = ts
 		if err = seekDuration(av, ts); err != nil {
 			return
 		}
@@ -227,7 +228,6 @@ func createDecoder(av *AVContext) error {
 }
 
 func seekDuration(av *AVContext, ts time.Duration) error {
-	av.selectedDuration = ts
 	tts := C.int64_t(ts.Milliseconds()) * C.AV_TIME_BASE / 1000
 	err := C.av_seek_frame(av.formatContext, C.int(-1), tts, C.AVSEEK_FLAG_BACKWARD)
 	C.avcodec_flush_buffers(av.codecContext)