tt1729 wrote:
Would you mind sharing with us which options ffmpeg needs for this? Thanks.
Sure. It's quite simple really:
ffmpeg -i <input file> -acodec copy -vcodec copy <output file>
The "copy" option does just what it implies: it copies the audio (-acodec) and video (-vcodec) tracks into the new container without transcoding. I believe that ffmpeg uses the file extension of the last argument to determine the wrapper type. I was amazed at how fast the process is.
I'm glad everybody is having such good luck with the workflow. I can't take full credit for it: I discovered the ffmpeg trick in another thread; all I did was wrap it into something more Mac-friendly.
I plan to update the workflow app to remove the requirement for ClipGrab, embedding a copy of ffmpeg into the application bundle.