本文中<video_home>为视频所在文件夹，<input.mkv>为待转的mkv格式视频，<output.mp4>为输出的mp4格式视频
WordPress支持的格式：MP4、M4V、MPG、MOV、VTT (text captions for video – upload by inserting a Video block)、AVI、OGV、WMV、3GP、3G2，其中并不包含mkv
Windows视频格式转换软件推荐 eibols/ffmpeg_batch
Mac视频格式转换
1.打开终端、安装FFmpeg
Bash
brew install ffmpeg
ffmpeg -version #验证ffmpeg是否安装成功2.开始转换
Bash
cd <video_home>
ffmpeg -i <input.mkv> -vcodec h264 -acodec aac <output.mp4>
# cd ~/Movies
# ffmpeg -i ScreenRecorderProject6.mkv -vcodec h264 -acodec aac test.mp4
# ffmpeg version 8.0 Copyright (c) 2000-2025 the FFmpeg developers
# built with Apple clang version 17.0.0 (clang-1700.0.13.3)
# configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/8.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
# libavutil 60. 8.100 / 60. 8.100
# *****
# *****
# Input #0, matroska,webm, from 'ScreenRecorderProject6.mkv':
# *****
# *****
# Output #0, mp4, to 'test.mp4':
# *****
# *****
# [libx264 @ 0x12c60f090] 8x8 transform intra:47.6% inter:70.5%
# [libx264 @ 0x12c60f090] coded y,uvDC,uvAC intra: 28.8% 50.3% 23.2% inter: 0.8% 2.1% 0.3%
# [libx264 @ 0x12c60f090] i16 v,h,dc,p: 44% 29% 9% 18%
# [libx264 @ 0x12c60f090] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 14% 41% 2% 2% 2% 2% 3% 2%
# [libx264 @ 0x12c60f090] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 24% 21% 4% 4% 4% 5% 5% 4%
# [libx264 @ 0x12c60f090] i8c dc,h,v,p: 56% 20% 18% 6%
# [libx264 @ 0x12c60f090] Weighted P-Frames: Y:0.2% UV:0.2%
# [libx264 @ 0x12c60f090] ref P L0: 78.8% 4.7% 11.8% 4.7% 0.0%
# [libx264 @ 0x12c60f090] ref B L0: 81.8% 15.9% 2.3%
# [libx264 @ 0x12c60f090] ref B L1: 95.1% 4.9%
# [libx264 @ 0x12c60f090] kb/s:1516.29
# [aac @ 0x12c653e80] Qavg: 30484.852参考资料
