This update of ffmpeg to version 3.1.8 fixes the following security issues:
- CVE-2016-9561: DoS through huge memory allocation (bsc#1015120)
- CVE-2016-10191: remote code execution vulnerability (bsc#1022921)
- CVE-2016-10192: remote code execution vulnerability (bsc#1022922)
- CVE-2017-5024: Heap overflow
- CVE-2017-5025: Heap overflow