<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi,<br><br><a _src="http://ffmpeg.org/doxygen/2.8/vf__drawtext_8c.html#a65f3f8df0fa6740ed48a631c89cde373" href="http://ffmpeg.org/doxygen/2.8/vf__drawtext_8c.html#a65f3f8df0fa6740ed48a631c89cde373">http://ffmpeg.org/doxygen/2.8/vf__drawtext_8c.html#a65f3f8df0fa6740ed48a631c89cde373</a><br><br>static int filter_frame(AVFilterLink *inlink, AVFrame *frame)<br><br>In the end of the above function,  text_w and text_h are shown, which are stored in DrawTextContext:var_values[VAR_TEXT_W] and DrawTextContext:var_values[VAR_TEXT_H].<br><br>How to get the two value via ffmpeg lib, i.e. DrawTextContext:var_values[VAR_TEXT_W] and DrawTextContext:var_values[VAR_TEXT_H]?<br><br>B.R.<br><br>Andrew<br></div></div><br><br><span title="neteasefooter"><p> </p></span>