用ffmpeg将图片转换为视频报错了
我有一张图片，需要把它转换为一个mp4 h.264编码视频，我用ffmpeg转换，但是过程中报错了：
ffmpeg -loop 1 -i Lena_Soderberg.jpg -c:v libx264 -t 10 output.mp4
提示：
[libx264 @ 0x5573424b8980] width not divisible by 2 (497x373)
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!
原因
这个错误是由于H.264编码器（libx264）的限制。对于H.264编码器，视频的宽度和高度必须能被2整除。这是因为在编码过程中，H.264使用了4x4和16x16的块进行编码，所以如果输入的图像宽度或者高度不能被2整除，那么就无法正常工作。
你的图片的尺寸为497x373，显然宽度497不能被2整除。为了解决这个问题，你可以用画图工具调整图片的尺寸。例如，你可以将宽度调整为496（最接近的可以被2整除的数），高度调整为372：
我把图片长宽调整为能被2整除的大小，果然可以了
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