FFMP v1.2

What's Changed

• fix: extended media formats by @massimo-rnd in #12
• fix: recursive file detection by @massimo-rnd in #13
• fix: argument checking by @massimo-rnd in #14
• fix: progress bar on failing processes by @massimo-rnd in #15
• fix: only killing FFMP spawned FFMPEG processes by @massimo-rnd in #16
• feat: cleaned up console output by @massimo-rnd in #17
• feat: pass other arguments to ffmpeg by @massimo-rnd in #18

Full Changelog: 1.1...1.2