使用ffmpeg缩放和剪切部分视频

I am trying to upload a video that is 640 x 480. Using FFmpeg I am trying to resize to a square but I am having much difficulty.

if i use s=320x320 in my command or scale 320x320

    ->setVideoScale(320, 320)

the image is distored.

If i change the aspect ratio 1:1 i get black bars.

is there a way to actually just cut a RECT in the video. IE i want to be able to re save the video and it only capture

   x 0 to 320
   y 0 to 320  

or whatever bounds I pick.

Basically I do not want to re-size I just want to be able to re record a certain portion of the video. is this possible?

dongzen5577
dongzen5577 听起来你想添加它作为答案,所以我可以接受!
接近 6 年之前 回复
duanjing7298
duanjing7298 听起来像你想要裁剪:ffmpeg.org/ffmpeg-filters.html#Examples-19
大约 6 年之前 回复

1个回答

Check out FFMPEG's video filters. There is a crop option that will do what you're asking for, specifically the first example.

Depending on the library you're using to interface with FFMPEG, something like the following might work per your example:

->addCommand('-vf', 'crop=320:320:0:0');
Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
立即提问