我正在尝试将 flac 音频文件转换为 alac 音频文件。使用命令 brew install ffmpeg 安装 ffmpeg 后，我在 mac os 终端中使用 ffmpeg 命令。
运行以下命令后
for name in *.flac; do ffmpeg -nostdin -i "$name" -acodec alac "${name%.*}.m4a"; done
我收到以下错误：
Stream mapping:
Stream #0:1 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (flac (native) -> alac (native))
[ipod @ 0x7fa5c6800000] Frame rate very high for a muxer not efficiently supporting it.
Please consider specifying a lower framerate, a different muxer or -vsync 2
[libx264 @ 0x7fa5c5804a00] …