Explicitly set StandardErrorEncoding and StandardOutputEncoding to
Encoding.UTF8 when invoking the FFmpeg subprocess.
This prevents log encoding issues and character corruption on Windows
environments that default to non-UTF8 ANSI code pages.
This fixes garbled metadata and font names in the FFmpeg logs.
Signed-off-by: nyanmisaka <nst799610810@gmail.com>
nyanmisaka
631a314d24