<div dir="ltr">Hi All,<div><br></div><div>I have successfully used ffmpeg command line tool to extract all Iframes(Key frames) from a transport stream and saved to file using the following command</div><div><br></div><div>ffmpeg -i ESPN-DISH.ts -f image2 -vf "select=eq(pict_type\,PICT_TYPE_I)" -vsync vfr yi%03d.png</div><div><br></div><div>For my particular use case, I have to read the frames programatically to extract the I frames and stream the I frames in a UI container. So far I can compile and the following program from this link to extract the YUV filtered images. </div><div><br></div><div>I found this example easy to modify for my use case. </div><div><a href="https://github.com/leixiaohua1020/simplest_ffmpeg_video_filter/blob/master/simplest_ffmpeg_video_filter/simplest_ffmpeg_video_filter.cpp">https://github.com/leixiaohua1020/simplest_ffmpeg_video_filter/blob/master/simplest_ffmpeg_video_filter/simplest_ffmpeg_video_filter.cpp</a><br></div><div><br></div><div>But I am having confusion on how to use the select=eq(pict_type\,PICT_TYPE_I) filter in the code. Particularly I can see the following functions to define the filter. </div><div><br></div><div><div>AVFilter *buffersrc = avfilter_get_by_name("buffer");</div><div>AVFilter *buffersink = avfilter_get_by_name("ffbuffersink");</div></div><div><br></div><div>But couldnt figure out how to tweak the code for extraction of I frames.</div><div><br></div><div>Please anyone help me to use the functions suitably for filtering the I frames from the video input. </div><div><br></div><div>Thanks in advance.</div><div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><table style="color:rgb(0,0,0);font-family:"Times New Roman";font-size:medium" width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td><table width="650" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="1098"><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px">Thank you,<br>warm regards,</p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><img src="http://elementzonline.com/signature/logo.png" alt="Logo" height="49" width="165"></p><p style="font-stretch:normal;font-size:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(138,40,40);font-weight:bold;margin:0px;padding:0px">Dhanish Vijayan</p><p style="font-stretch:normal;font-size:13px;font-family:Helvetica,Arial,sans-serif;color:rgb(138,40,40);font-weight:bold;margin:0px;padding:0px">Chief Technical Officer</p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px">Elementz Engineers Guild Pvt Ltd</p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><span style="font-weight:bold">Email</span>: <a href="mailto:dhanish@elementzonline.com" target="_blank">dhanish@elementzonline.com</a></p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><span style="font-weight:bold">Website</span>: <a href="http://www.elementzonline.in" target="_blank">www.elementzonline.in</a>, <a href="http://www.elementzonline.com" target="_blank">www.elementzonline.com</a></p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><span style="font-weight:bold">Mob</span>: +91-8129025513</p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><span style="font-weight:bold">Off</span>: +91-471-2300804</p><p style="font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"></p><br><table width="900" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="border-right:1px dashed rgb(0,0,0);padding:0px 10px 0px 0px" align="left" valign="top" width="349"><span><p style="font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:normal;font-stretch:normal;font-size:12px;line-height:15px;font-family:Helvetica,Arial,sans-serif;color:rgb(46,46,46);margin:0px;padding:0px 0px 6px"><span style="font-weight:bold">Elementz Engineers Guild Pvt Ltd</span><br>
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