Well I had some older video's and decided to convert them to MP4 before the ability to change or play them was over because the format was so obsolete, it was wmv btw. I tried winFF which is a really fast converter but I found it can do it, likely licensing or something. Did some studying up on it and found that VLC can do it, and surprisingly fast also. I also didn't realize that VLC would use all 4 of my cpu cores, nice surprise. Mostly running at around 96% cpu usage for all cores. The video's were converting at 12 seconds play time in a second so they took 1/12th the time of the video to convert. That is a lot faster than how I used to do it in virtualdub back 10 years ago. > I also found if you want to just replace the container without reencoding in winFF you just do a new preset and in it add -f avi -vcodec copy -acodec copy and it'll instruct FFmpeg to just copy the video and audio to a new container like mp4. So it's like moving the groceries from a paper bag to a reusable bag. the contents are the same but the container is replaced, I'm doing that analogy for people that may not understand the terminology as I stated it. Any other questions that are not super technical you can ask me in the comments and if I don't know I'll try to find the answer for you. I'm very proficient when using search engines.