<div dir="ltr"><div>Thanks for the kind answer.</div><div><br></div><div>I try:</div><div><br></div><div>gst-launch-1.0 uridecodebin uri=file:///home/v1p3r/Video/temp/1080_stereo_59.940_interlaced.mp4 name=decode decode. ! deinterlace ! autovideoconvert ! interlace <b>field-pattern=2</b> top-field-first=true allow-rff=true ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink  decode. ! audioconvert !  audio/x-raw, format=S32LE, channels=2 ! audioresample ! audio/x-raw, rate=48000 ! autoaudiosink</div><div><br></div><div> gst-launch-1.0 uridecodebin uri=file:///home/v1p3r/Video/temp/1080_stereo_59.940_interlaced.mp4 name=decode decode. ! deinterlace ! autovideoconvert ! interlace<b> field-pattern=1</b> top-field-first=true allow-rff=true ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink  decode. ! audioconvert !  audio/x-raw, format=S32LE, channels=2 ! audioresample ! audio/x-raw, rate=48000 ! autoaudiosink<br></div><div><br></div><div> gst-launch-1.0 uridecodebin uri=file:///home/v1p3r/Video/temp/1080_stereo_59.940_interlaced.mp4 name=decode decode. ! <b>deinterlace fields=2</b> ! autovideoconvert ! interlace field-pattern=2:2 top-field-first=true allow-rff=true ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink  decode. ! audioconvert !  audio/x-raw, format=S32LE, channels=2 ! audioresample ! audio/x-raw, rate=48000 ! autoaudiosink<br></div><div><br></div><div>gst-launch-1.0 uridecodebin uri=file:///home/v1p3r/Video/temp/1080_stereo_59.940_interlaced.mp4 name=decode decode. ! <b>deinterlace fields=1</b> ! autovideoconvert ! interlace field-pattern=2:2 top-field-first=true allow-rff=true ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink  decode. ! audioconvert !  audio/x-raw, format=S32LE, channels=2 ! audioresample ! audio/x-raw, rate=48000 ! autoaudiosink</div><div><br></div><div>always video speed is double than audio ....</div><div><br></div><div>instread:</div><div>gst-launch-1.0 uridecodebin uri=file:///home/v1p3r/Video/temp/1080_stereo_59.940_interlaced.mp4 name=decode decode. ! deinterlace ! autovideoconvert ! interlace field-pattern=2:2 top-field-first=true allow-rff=true<b> fields=1</b>! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink  decode. ! audioconvert !  audio/x-raw, format=S32LE, channels=2 ! audioresample ! audio/x-raw, rate=48000 ! autoaudiosink<br></div><div><br></div><div>and also fileds=2 .. results in a pipeline error ....</div><div><br></div><div>where i have to put the "fields" switch?<br></div><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Sourceforge: <a href="https://sourceforge.net/u/allegfede/" target="_blank">https://sourceforge.net/u/allegfede/</a><br><div><br>YouTube Channel: <a href="https://www.youtube.com/c/v1p3rslab" target="_blank">https://www.youtube.com/c/v1p3rslab</a><br><br>VIMEO HD videos: <a href="http://www.vimeo.com/user1912745/videos" target="_blank">http://www.vimeo.com/user1912745/videos</a></div></div></div></div></div></div></div></div>