<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server"> <style></style> </head> <body> <meta content="text/html; charset=UTF-8"> <style type="text/css" style="">  </style> <div dir="ltr"> <div id="x_divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:#000000; font-family:Calibri,Arial,Helvetica,sans-serif"> Hello, Tany Try to is any messages appears on a bus. </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr">From: gstreamer-devel <gstreamer-devel-bounces@lists.freedesktop.org> on behalf of Tany <tany0007@gmail.com> Sent: Wednesday, February 15, 2017 4:25:42 AM To: gstreamer-devel@lists.freedesktop.org Subject: Issue burning subtitle into video when seeking <div> </div> </div> </div> <div class="PlainText">Hi, My goal is to transcode a video with burning subtitle(by using textoverlay). I reference Gstreamer tutorial and write a little program to test 2 pipeline: pipeline 1(without subtitle): multiqueue max-size-buffers=10000 max-size-bytes=0 max-size-time=0 name=mq splitfilesrc location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.mkv" ! matroskademux name=dmx dmx. ! queue ! identity sync=false ! h264parse ! omxh264dec ! omxh264enc force-keyframe-period=40 scaling-width=1920 scaling-height=800 ! h264parse ! mq.sink_0 mq.src_0 ! mpegtsmux name=mux ! filesink location="/share/Public/aaa.ts" dmx. ! aacparse ! queue ! identity sync=false ! faad name=adec ! audioconvert ! audioresample ! audio/x-raw,channels=2,rate=44100 ! queue ! voaacenc ! audio/mpeg,mpegversion=4,stream-format=raw ! aacparse ! mq.sink_1 mq.src_1 ! audio/mpeg,mpegversion=4,stream-format=raw ! mux. pipeline 2(with subtitle): multiqueue max-size-buffers=10000 max-size-bytes=0 max-size-time=0 name=mq textoverlay wait-text=false name=txo splitfilesrc location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.mkv" ! matroskademux name=dmx dmx. ! queue ! identity sync=false ! h264parse ! omxh264dec ! txo.video_sink txo.src ! omxh264enc force-keyframe-period=40 scaling-width=1920 scaling-height=800 ! h264parse ! mq.sink_0 mq.src_0 ! mpegtsmux name=mux ! filesink location="/share/Public/aaa.ts" filesrc location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.zh-TW.srt" ! subparse subtitle-encoding=UTF-8 ! txo.text_sink dmx. ! aacparse ! queue ! identity sync=false ! faad name=adec ! audioconvert ! audioresample ! audio/x-raw,channels=2,rate=44100 ! queue ! voaacenc ! audio/mpeg,mpegversion=4,stream-format=raw ! aacparse ! mq.sink_1 mq.src_1 ! audio/mpeg,mpegversion=4,stream-format=raw ! mux. Pipeline 1 works correctly whether seek event is performed or not. Pipeline 2 is also working correctly without seeking but have issue while seek is performed. It will block at ret = gst_element_seek_simple (pipeline, GST_FORMAT_TIME, GST_SEEK_FLAG_KEY_UNIT, 7280 * GST_SECOND); and never return. Is there anything I can do about this? the attached file is my test code. regards, Tany gst_seek.c <<a href="http://gstreamer-devel.966125.n4.nabble.com/file/n4681885/gst_seek.c">http://gstreamer-devel.966125.n4.nabble.com/file/n4681885/gst_seek.c</a>> -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Issue-burning-subtitle-into-video-when-seeking-tp4681885.html"> http://gstreamer-devel.966125.n4.nabble.com/Issue-burning-subtitle-into-video-when-seeking-tp4681885.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list gstreamer-devel@lists.freedesktop.org <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </div> </body> </html>