vsoneliner 0.0.2

Commandline program for creating Python script for VSPipe

vsoneliner

vsoneliner generates VapourSynth script file for VSPipe from commandline. It is for the situation where only the simplest VapourSynth script is needed, and where writing and keeping a script file becomes cumbersome.

Install vsoneliner:

python -m pip install vsoneliner

An Example of using vsoneliner using fish shell:

INPUT=(realpath "input.mkv") vspipe (python -m vsoneliner "import mvsfunc as mvf" "r\"$INPUT\" |> core.lsmas.LWLibavSource |> mvf.Depth\$(depth=10) |> .set_output()") -c y4m - | x264 --demuxer y4m --output "output.mkv" -

Excerpt:

python -m vsoneliner "import mvsfunc as mvf" "r\"$INPUT\" |> core.lsmas.LWLibavSource |> mvf.Depth\$(depth=10) |> .set_output()"

• Each positional argument to vsoneliner corresponds to one line (or rather, one exec) in the resulting Python script. In this example, we have two lines: import mvsfunc as mvf and r"INPUT" |> core.lsmas.LWLibavSource |> mvf.Depth$(depth=10) |> .set_output().
• vsoneliner by default imports from vapoursynth import core and import vapoursynth as vs, but any additional imports have to be written manually, such as import mvsfunc as mvf in the example.
• vsoneliner accepts Coconut language in the commandline. Coconut language's syntax is a strict superset of Python, which means if you don't want to learn it, you can write vanilla Python code and it will work just fine. Here in this example, r"INPUT" |> core.lsmas.LWLibavSource |> mvf.Depth$(depth=10) |> .set_output() transpiles to mvf.Depth(core.lsmas.LWLibavSource(r"INPUT"), depth=10).set_output().
• vsoneliner saves the commands to a Python file with .vpy file extension and then print the path to the file to stdout before exiting. Use $() in a POSIX shell to feed this file to vspipe. vsoneliner also accepts --verbose argument, with which vsoneliner will also print the path to the file to stderr.