I甯у拰IDR甯х殑鍖哄埆

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鍙﹀涓€涓瘮杈冨皯鎻愬埌鐨勬蹇垫槸IDR甯с€侷DR灞炰簬I甯э紝浣嗘槸I甯т笉涓€瀹氭槸IDR甯с€傚彧鏈塈DR甯э紝鎵嶆湁SPS鍜孭PS銆傝В鐮佸櫒鏀跺埌IDR甯ф椂锛屽皢reference buffer娓呯┖锛涜€屾敹鍒癐甯т笉浼氭竻绌簉eference buffer銆備篃灏辨槸璇达紝瀵规煇涓狪DR甯т箣鍚庣殑甯э紝瑙g爜鍣ㄤ笉浼氬弬鑰冭繖涓狪DR甯т箣鍓嶇殑浠讳綍甯у仛瑙g爜銆傚鏌愪釜I甯т箣鍚庣殑甯э紝瑙g爜鍣ㄥ彲鑳戒細鍙傝€冭繖涓狪甯т箣鍓嶇殑甯у仛瑙g爜銆傝繕鍙互鍙傝€冩枃妗ttps://malleshamdasari.wordpress.com/2013/07/31/difference-between-i-frame-and-idr-frame/銆?br> 鍦╔ilinx VCU GStreamer閲岋紝浣跨敤鍙傛暟periodicity-idr鎸囧畾IDR甯х殑闂撮殧銆傚湪Xilinx VCU Ctrl-SW閲岋紝浣跨敤鍙傛暟Gop.FreqIDR鎸囧畾IDR甯х殑闂撮殧銆侾G252閲岀殑璇存槑濡備笅锛?/p>

IDR picture frequency 
periodicity-idr 
Specifies the number of frames between consecutive
instantaneous decoder refresh (IDR) pictures. The periodicity-
idr property was formerly called gop-freq-idr.
Allowed values: <Positive value> or -1 to disable IDR insertion
Default value: 0 (first frame is IDR)
Gop.FreqIDR Specifies the minimum number of frames between two IDR pictures (AVC and HEVC). IDR
insertion depends on the position of the GOP boundary.
Allowed values: positive integer or -1 to disable IDR region.
Default value: -1

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