gstreamer.md

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-# official page
+## official page
 [GStreamer: open source multimedia framework]( https://gstreamer.freedesktop.org/ )
+
+## fpsを知りたい
+参考リンク
+* [fpsdisplaysink]( https://gstreamer.freedesktop.org/documentation/debugutilsbad/fpsdisplaysink.html?gi-language=c )
+* [GStreamerで映像処理のボトルネックを見つける方法 - Qiita]( https://qiita.com/sudamatthew95/items/9f300fc5555992bb8e8b )
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