我有一系列具有透明背景的 PNG，我想将其渲染为带有 alpha 通道的视频。我尝试运行以下ffmpeg命令：
ffmpeg -y -r 60 -i frames/%04d.png -c:v prores_ks -profile:v 4 -pix_fmt yuva444p10le video.mov
不幸的是，这似乎不起作用。Quicktime 无法打开视频，当我尝试将其导入 DaVinci Resolve 时，它被视为已损坏。我是否遗漏了其他参数？
我正在运行 FFMPEG 版本 4.4.1。运行时的完整输出如下ffmpeg：
ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers
built with Apple clang version 13.0.0 (clang-1300.0.29.3)
configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/4.4.1_4 --enable-shared
--enable-pthreads --enable-version3 --cc=clang --host-cflags=
--host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl
--enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame
--enable-libopus --enable-librav1e --enable-librist --enable-librubberband
--enable-libsnappy --enable-libsrt --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-avresample --enable-videotoolbox
libavutil 56. 70.100 / 56. 70.100
libavcodec 58.134.100 / 58.134.100
libavformat 58. 76.100 / 58. 76.100
libavdevice 58. 13.100 / 58. 13.100
libavfilter 7.110.100 / 7.110.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 9.100 / 5. 9.100
libswresample 3. 9.100 / 3. 9.100
libpostproc 55. 9.100 / 55. 9.100