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-omxtranscoder -- Raspberry Pi command line OMX video transcoder
-===
-./omxtranscoder in_file out_file
+# Raspberry Pi command line OMX video transcoder
 
+### command line: ./omxtranscoder file_in file_out
+- file_in:  input video file
+- file_out:  output video file
 
-omxtranscoder is developed base on omxplayer
-(https://github.com/popcornmix/omxplayer.git)
+# Reference
+- omxtranscoder is developed base on [omxplayer](https://github.com/popcornmix/omxplayer.git)
+- https://vcostudy.com/2018/07/22/raspberry-pi-transcodes-video/