Looking For A Video Editor that will maintain the codecs of the original source video Im trying to test various video/audio codecs by editing clips from larger videos that have the codecs I want to test.  Although every video editor i have tried changes the codecs of the clips i create to different codecs than what the original used.

Are there any video editors out there where I can create clips of videos without changing the codecs of the original video...I want to create clips, yet keep the audio/video codecs in tact.

I have tried:

Windows Movie Maker

Avidemux 2.5

AVS Video Editor

VideoLAN Movie Creator
In many instances you can use ffmpeg to create a clip out of a longer clip, and request that the original frames are copied instead of re-encoded. 

I'm writing this from memory so you may want to double check, but I believe the command line options you need to use for this are:

ffmpeg -i &lt;source-filename&gt; -vcodec copy -acodec copy -ss &lt;start-position&gt; -t &lt;duration&gt; &lt;destination-filename&gt;