I am looking for a free single lossless GUI tool to manipulate Video files quickly without re-encoding.
I wish the following features can be implemented in a GUI with dark theme/mode:
- Cut [lossless]
- Join [lossless]
- Rotate (Quick/True) [lossless]
- Flip (H/V) [lossless]
- Multiplex (add/remove tracks [V/A/S/CH]) [lossless]
- Crop [lossless]

Currently I am using different tools to achieve the functionality:
LosslessCut [Cuts, Joins, Rotates]
Clever-FFmpeg-GUI [Flips, Multiplexes]

Still looking for a decent GUI-based Crop Program [used XMedia-Recode in the past]

I hope FFmpegX can do the above .. is anyone up for the challenge?