<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"> <p>Hello, Tany</p> <p><br> </p> <p>Small help to you.</p> <p><br> </p> <p><span><span>GMainLoop* </span>_loop = g_main_loop_new(NULL, FALSE);</span><br> </p> <p><span></p> <div>GstBus* bus = gst_pipeline_get_bus(GST_PIPELINE(_pipeline));</div> <div><span style="font-size:12pt">gst_bus_add_watch(bus, BusCallback, this);</span><br> </div> <div><span style="font-size:12pt"><span>g_main_loop_run(_loop);</span><br> </span></div> <div><span style="font-size:12pt"><span><br> </span></span></div> <div><span style="font-size:12pt"><span> <div>int GStreamerPlayer::BusCallback(GstBus*, GstMessage* message, void* data)</div> <div>{</div> <div><span class="x_Apple-tab-span" style="white-space:pre"></span>GStreamerPlayer* player = (GStreamerPlayer*)data;</div> <div><br> </div> <div><span class="x_Apple-tab-span" style="white-space:pre"></span>switch (GST_MESSAGE_TYPE(message))</div> <div><span class="x_Apple-tab-span" style="white-space:pre"></span>{</div> <div> <div><span class="x_Apple-tab-span" style="font-size:12pt; white-space:pre"></span><span style="font-size:12pt">case GST_MESSAGE_WARNING:</span><br> </div> <div><span class="x_Apple-tab-span" style="white-space:pre"></span>case GST_MESSAGE_ERROR:</div> <div><span class="x_Apple-tab-span" style="font-size:12pt; white-space:pre"></span><span style="font-size:12pt">case GST_MESSAGE_ASYNC_DONE:</span><br> </div> <div><span class="x_Apple-tab-span" style="white-space:pre"></span>case GST_MESSAGE_EOS:</div> <div>....</div> </div> <div><br> </div> <div>Mikl</div> </span></span></div> <br> </span> <p></p> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> gstreamer-devel <gstreamer-devel-bounces@lists.freedesktop.org> on behalf of Tany <tany0007@gmail.com><br> <b>Sent:</b> Wednesday, February 15, 2017 4:25:42 AM<br> <b>To:</b> gstreamer-devel@lists.freedesktop.org<br> <b>Subject:</b> Issue burning subtitle into video when seeking</font> <div> </div> </div> </div> <font size="2"><span style="font-size:10pt;"> <div class="PlainText">Hi,<br> <br> My goal is to transcode a video with burning subtitle(by using textoverlay).<br> I reference Gstreamer tutorial and write a little program to test 2<br> pipeline:<br> <br> pipeline 1(without subtitle):<br> multiqueue max-size-buffers=10000 max-size-bytes=0 max-size-time=0 name=mq<br> splitfilesrc<br> location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.mkv"<br> ! matroskademux name=dmx dmx. ! queue ! identity sync=false ! h264parse !<br> omxh264dec ! omxh264enc force-keyframe-period=40 scaling-width=1920<br> scaling-height=800 ! h264parse ! mq.sink_0 mq.src_0 ! mpegtsmux name=mux !<br> filesink location="/share/Public/aaa.ts" dmx. ! aacparse ! queue ! identity<br> sync=false ! faad name=adec ! audioconvert ! audioresample !<br> audio/x-raw,channels=2,rate=44100 ! queue ! voaacenc !<br> audio/mpeg,mpegversion=4,stream-format=raw ! aacparse ! mq.sink_1 mq.src_1<br> ! audio/mpeg,mpegversion=4,stream-format=raw ! mux.<br> <br> pipeline 2(with subtitle):<br> multiqueue max-size-buffers=10000 max-size-bytes=0 max-size-time=0 name=mq<br> textoverlay wait-text=false name=txo splitfilesrc<br> location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.mkv"<br> ! matroskademux name=dmx dmx. ! queue ! identity sync=false ! h264parse !<br> omxh264dec ! txo.video_sink txo.src ! omxh264enc force-keyframe-period=40<br> scaling-width=1920 scaling-height=800 ! h264parse ! mq.sink_0 mq.src_0 !<br> mpegtsmux name=mux ! filesink location="/share/Public/aaa.ts" filesrc<br> location="/share/Multimedia/debug/harry/Harry.Potter.and.the.Deathly.Hallows.Part.1.2010.BluRay.1080p.AAC.4Audio.x264-CHD.zh-TW.srt"<br> ! subparse subtitle-encoding=UTF-8 ! txo.text_sink dmx. ! aacparse ! queue !<br> identity sync=false ! faad name=adec ! audioconvert ! audioresample !<br> audio/x-raw,channels=2,rate=44100 ! queue ! voaacenc !<br> audio/mpeg,mpegversion=4,stream-format=raw ! aacparse ! mq.sink_1 mq.src_1<br> ! audio/mpeg,mpegversion=4,stream-format=raw ! mux.<br> <br> Pipeline 1 works correctly whether seek event is performed or not.<br> Pipeline 2 is also working correctly without seeking but have issue while<br> seek is performed.<br> It will block at <br> ret = gst_element_seek_simple (pipeline, GST_FORMAT_TIME, <br> GST_SEEK_FLAG_KEY_UNIT, 7280 * GST_SECOND);<br> <br> and never return.<br> <br> Is there anything I can do about this? the attached file is my test code.<br> <br> regards,<br> Tany<br> <br> gst_seek.c<br> <<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>> <br> <br> <br> <br> --<br> 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><br> Sent from the GStreamer-devel mailing list archive at Nabble.com.<br> _______________________________________________<br> gstreamer-devel mailing list<br> gstreamer-devel@lists.freedesktop.org<br> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a><br> </div> </span></font> </body> </html>