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</o:shapelayout></xml><![endif]--></head><body lang=RU link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal style='margin-bottom:12.0pt;line-height:12.95pt;background:white;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>Hello<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt;line-height:12.95pt;background:white;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>I need to programmatically draw an image over the video frame when encoding video via libavcodec. (which is part of ffmpeg). As I understand I need to use libavfilter tools to do this.<o:p></o:p></span></p><p class=MsoNormal style='line-height:12.95pt;background:white;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>I can access </span><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>AVFilter</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'> via </span><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>avfilter_get_by_name("blend")</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>. Also I can access filter graph via</span><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>avfilter_graph_create_filter(&filterCtx, filter, "blender", NULL, NULL, fgr)</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>. But I can not understand what should I do next.<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt;line-height:12.95pt;background:white;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>I have two AV frames, for example:<o:p></o:p></span></p><p class=MsoNormal style='line-height:12.95pt;background:#EEEEEE;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>AVFrame* bottomFrame;<o:p></o:p></span></p><p class=MsoNormal style='line-height:12.95pt;background:#EEEEEE;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>AVFrame* topFrame;<o:p></o:p></span></p><p class=MsoNormal style='line-height:12.95pt;background:white;vertical-align:baseline'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>How can I put </span><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>topFrame</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'> over the </span><span lang=EN-US style='font-size:10.0pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE;mso-fareast-language:RU'>bottomFrame</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'> using libav API?<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt;line-height:12.95pt;background:white;vertical-align:baseline'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:RU'>Thank you<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>