我很困惑如何将三个ffmpeg命令组合成一个也包含两个输入的命令。
// rescale with certain dimension
ffmpeg -i front.mp4 -filter_complex scale=600:400 rescale.mp4
//Attach to image
ffmpeg -i 600800.jpg -i rescale.mp4 -filter_complex "overlay=(W-w)/2:(H-h)/2" final.mp4
// After Changed to specific even size Burn Subtitle
我已经在窗口中为ffmpeg设置了环境变量,希望用ffmpeg将srt文件嵌入到我的mp4文件中:
ffmpeg -i f:\sample\dance.mp4 -vf subtitles='f:\sample\dance.srt' f:\sample\out.mp4
它遇到了一个奇怪的错误:
Press [q] to stop, [?] for help
[subtitles @ 0000000002c2fd00] Unable to parse option value "sampledance.srt" as
image size
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