[FFmpeg-user] processing of mxf videoclips with ffmpeg

[Pawel Por]

Hi

I'm trying to do the following 3 simple operations on my MXF movie.
I would like to:
- cut it
- make a sound in a videoclip louder or more quiet.
- merge a sliced videoclips into a single one

In all above steps it is very important not to loose both video and audio
quality.
I don't need to stick to any specific output format (the conversion is
allowed).

I've uploaded an example MXF videoclip into the following location (it
takes about 25 MB):
http://www.sendspace.pl/en/file/5e767ba82331b8203a87371

I found on the internet quite easily complete ffmpeg commands of how to do
those steps but unfortunately they didn't work well. Some of them generated
errors, some of them produced videoclip without an audio and others
produced videoclips with desynchronized audio and video

great thanks for help