FFMPEG pipe 从 windows 上的命令行输入文件名

Question

I am concatenating a bunch of files on a windows 10 box into a single file using "ffmpeg -f concat -safe 0 -i list.txt -c copy output.mp4". This works fine when I generate list.txt in the required format.

What I am wanting is to not have to generate the file first and instead pipe the filenames in as the examples here show for *nix.

I have tried as follows "ffmpeg -f concat safe 0 -i <(for %i in (*.ts) do @echo file '%i') -c copy output.mp4" but I get "The system cannot find the file specified.".

Any idea's how to make this work?

Answer 1

Command substitution on Unix...

ffmpeg -i $(some-command-that-generates-an-url/path) [...]

...is possible on Windows through a for-loop:

FOR /F "delims=" %A IN ('some-command-that-generates-an-url/path') DO ffmpeg -i %A

Process substitution on the other hand, as you describe, isn't possible on Windows. Temporary files are inevitable.