FFMpeg DVD Conversion
To get crop geometry:
ffmpeg -i input.mkv -vf cropdetect=24:16:0 dummy.mkv ... [Parsed_cropdetect_0 @ 0x3704360] x1:0 x2:639 y1:43 y2:317 w:640 h:272 x:0 y:46 pts:181320 t:181.320000 crop=640:272:0:46 ...
ffmpeg is a command line utility that presents a API to interacting with a variety of media types/encodings in a uniform fashion.
Depending on the
ffmpeg distribiont, you may get access to utilities such as
ffprobe (which provides information on a file) and
ffplay (will play back a file). Those tools are critical.
Those tools, by default, will show all the arguments that
ffmpeg was compiled with, which can get a little verbose. If you're going to run many ffmpeg commands, I suggest you get used to passing the
As part of my professional duties, I have been tasked with developing a desktop application to analyze audio files. This desktop application would need to be work across platforms (Windows, macOS and Ubuntu), and I cannot rely on dependencies having already been installed (such as Python itself). Naturally I turned to Qt (and more specifically, Qt for Python) due to its capabilities for creating GUI applications that work across OSs. As I could not be dependent on the end user having Python installed (so no deploying a wheel and calling it good), I decided it may be worth trying to make native installers (
deb packages for linux,
.app bundles and
.dmg files for macOS, and
setup.exe files for Windows).
In short, here were the objectives I aimed to have