我运行ffmpeg -start_number 1561703179 -i asl-0136/screenshot-%10d.png -vframes 16 -pix_fmt yuv444p -r 1 hi.mp4
，但输出视频仅包含一帧，即使目录中有 64 帧。
可能与FFMPEG 幻灯片放映图像 - 仅显示一帧但我在 Arch 上使用的是不同的版本
我也不想使用通配符，因为我需要 Windows 支持
ls文件夹的输出：
screenshot-1561703162.png screenshot-1561703375.png screenshot-1561703588.png screenshot-1561703801.png screenshot-1561704014.png
screenshot-1561703179.png screenshot-1561703392.png screenshot-1561703605.png screenshot-1561703818.png screenshot-1561704030.png
screenshot-1561703195.png screenshot-1561703408.png screenshot-1561703621.png screenshot-1561703835.png screenshot-1561704047.png
screenshot-1561703211.png screenshot-1561703425.png screenshot-1561703638.png screenshot-1561703851.png screenshot-1561704063.png
screenshot-1561703227.png screenshot-1561703441.png screenshot-1561703654.png screenshot-1561703867.png screenshot-1561704080.png
screenshot-1561703243.png screenshot-1561703458.png screenshot-1561703671.png screenshot-1561703883.png screenshot-1561704096.png
screenshot-1561703260.png screenshot-1561703474.png screenshot-1561703687.png screenshot-1561703899.png screenshot-1561704112.png
screenshot-1561703276.png screenshot-1561703490.png screenshot-1561703704.png screenshot-1561703916.png screenshot-1561704129.png
screenshot-1561703293.png screenshot-1561703506.png screenshot-1561703720.png screenshot-1561703932.png screenshot-1561704145.png
screenshot-1561703309.png screenshot-1561703523.png screenshot-1561703736.png screenshot-1561703948.png screenshot-1561704161.png
screenshot-1561703326.png screenshot-1561703539.png screenshot-1561703752.png screenshot-1561703965.png screenshot-1561704177.png
screenshot-1561703342.png screenshot-1561703555.png screenshot-1561703769.png screenshot-1561703981.png
screenshot-1561703359.png screenshot-1561703572.png screenshot-1561703785.png screenshot-1561703997.png
版本：
ffmpeg version n4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.0 (GCC)
configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-
-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --e
ibidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug --enable-libm
encore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enabl
enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enab
able-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --en
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100