ffmpeg - 使用 ffmpeg 使用 DNXHD 编解码器将 jpg 转换为 mov 时出错

Question

我正在使用 ffmpeg 将 jpg 转换为 mov。我被要求使用 DNxHD 115 编解码器，并且帧率为 24，所以我编写了以下命令:

ffmpeg -i my.jpg -r 24 -s 1920x1080 -vcodec dnxhd -b:v 115m -y test.mov

但它抛出错误:

[swscaler @ 0xefae40] deprecated pixel format used, make sure you did set range correctly
[dnxhd @ 0xf1c580] video parameters incompatible with DNxHD. Valid DNxHD profiles:
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:175Mbps; pixel format:yuv422p10; framerate:24000/1001
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:185Mbps; pixel format:yuv422p10; framerate:25/1
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:115Mbps; pixel format:yuv422p; framerate:24000/1001
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:120Mbps; pixel format:yuv422p; framerate:25/1
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:175Mbps; pixel format:yuv422p; framerate:24000/1001
[dnxhd @ 0xf1c580] Frame Size:1920x1080p; bitrate:185Mbps; pixel format:yuv422p; framerate:25/1
Stream mapping:
    Stream #0:0 -> #0:0 (mjpeg(native) -> dnxhd(native))
Error while openig encoder for output stream #0：0 - maybe incorrect parameter such as bit_rate, rate, width or height

我已经尝试了所有选项，但没有成功。

Answer 1

第一次尝试

ffmpeg -i my.jpg -r 24000/1001 -s 1920x1080 -vcodec dnxhd -b:v 115m -y test.mov

如果上述失败，则像素格式 Not Acceptable ，所以尝试

ffmpeg -i my.jpg -r 24000/1001 -pix_fmt yuv422p -s 1920x1080 -vcodec dnxhd -b:v 115m -y test.mov

请注意，您的输入是单个图像。所以输出持续时间将是 1001/24000 s