我有一个网站,我们将多个视频与 ffmpeg xstack 结合起来。它是一个自动化的过程。当视频数量不是偶数时,马赛克中的空白图块为绿色。我想弄清楚如何使备用空白变黑。
我试过xstack=inputs=2:fill='black':layout=0_0
(这给出了一个找不到错误对象)也试过了 -filter_complex "color=s=1920x1080:c=black"
。
有什么建议么?这是整个命令:
ffmpeg -i video1 -i video1 -i video1 -i video1 -i video1 -i video1 -i video1 \
-i video1 -i video1 -filter_complex \
"color=s=1920x1080:c=black;[0:v] setpts=PTS-STARTPTS, scale=qvga [a0];[1:v] setpts=PTS-STARTPTS, scale=qvga [a1];[2:v] setpts=PTS-STARTPTS, scale=qvga [a2];[3:v] setpts=PTS-STARTPTS, scale=qvga [a3];[4:v] setpts=PTS-STARTPTS, scale=qvga [a4];[5:v] setpts=PTS-STARTPTS, scale=qvga [a5];[6:v] setpts=PTS-STARTPTS, scale=qvga [a6];[7:v] setpts=PTS-STARTPTS, scale=qvga [a7];[8:v] setpts=PTS-STARTPTS, scale=qvga [a8];[a0][a1][a2][a3][a4][a5][a6][a7][a8]xstack=inputs=9:layout=0_0|w0_0|w0+w1_0|0_h0|w0_h0|w0+w1_h0|0_h0+h1|w0_h0+h1|w0+w1_h0+h1[out] " \
-map "[out]" output