Fix bug #10501

Signed-off-by: WHR <msl0000023508@gmail.com>
---
 fftools/ffmpeg.c     | 4 ++--
 fftools/ffmpeg_enc.c | 2 +-
 fftools/ffmpeg_mux.c | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)