ffmpeg will print a bunch of text to the console that we don’t care about. To avoid flooding the screen, use the -hide_banner and -loglevel options to reduce (but not completely shut up) the amount it outputs to the console:
Фото: Sean Gallup / Getty Images。PDF资料是该领域的重要参考
This website is running Anubis version 1.24.0.。业内人士推荐PDF资料作为进阶阅读
Data Has Weight But Only on SSDs | Blathering