Comment 8 for bug 508975

I miss this feature also. Have to use Avidemux because of this, although otherwise I'd rather use OpenShot because it can have multiple tracks where avidemux cannot and overall video editing with avidemux is very limited.

As it was said above, it should be as in avidemux, so one could choose "copy" for audio andor video codec separately.

And why not also "null" as a video or audio codec, to easily separate the audio track from the video to have it externally editable in Audacity (NR and other complicated audio filters). Then just join the improved audio back.

(In Mplayer there also was special codecs "null" and "copy" always available and useful: -ovc copy -oac copy)

2nd best solution:
Even just copying the original audio+video codecs' parameters and use them to re-encode would be better than now when one must spend time figuring out the parameters in the original video and then try to find as close output parameters as possible. eg.: No point of re-encoding 320x240 video to PAL or 14400 bps audio to 24000 bps.

(Also ability to use filters in avidemux when transcoding is something which Openshot is missing. But of course if copy codec is supported, eg. audio track can be filtered externally by Audacity.)