Am 04.07.2022 um 18:46 schrieb Cecil Westerhof via ffmpeg-user:
Paul B Mahol <one...@gmail.com> writes:
On Mon, Jul 4, 2022 at 6:15 PM Cecil Westerhof via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
Some time ago I was experimenting with xfade. I wanted to know how to
use several in one run. Now I really needed it, so I did some digging
and found this:
ffmpeg -y \
-i input0.mkv \
-i input1.mkv \
-i input2.mkv \
-i input3.mkv \
-i input4.mkv \
-i input5.mkv \
-i input6.mkv \
-i input7.mkv \
-i input8.mkv \
-i input9.mkv \
-vcodec libx264 \
-crf 26 \
-preset veryfast \
-filter_complex "
[0:a][1:a] acrossfade=d=4[a1];
[0:v][1:v] xfade=transition=hlslice:
duration=4:
offset=308[v1];
[a1][2:a] acrossfade=d=4[a2];
[v1][2:v] xfade=transition=vertopen:
duration=4:
offset=357[v2];
[a2][3:a] acrossfade=d=4[a3];
[v2][3:v] xfade=transition=circlecrop:
duration=4:
offset=533[v3];
[a3][4:a] acrossfade=d=4[a4];
[v3][4:v] xfade=transition=rectcrop:
duration=4:
offset=1016[v4];
[a4][5:a] acrossfade=d=4[a5];
[v4][5:v] xfade=transition=slideup:
duration=4:
offset=1158[v5];
[a5][6:a] acrossfade=d=4[a6];
[v5][6:v] xfade=transition=wiperight:
duration=4:
offset=1473[v6];
[a6][7:a] acrossfade=d=4[a7];
[v6][7:v] xfade=transition=horzclose:
duration=4:
offset=1661[v7];
[a7][8:a] acrossfade=d=4[a8];
[v7][8:v] xfade=transition=diagbl:
duration=4:
offset=2082[v8];
[a8][9:a] acrossfade=d=4[a9];
[v8][9:v] xfade=transition=slideright:
duration=4:
offset=2211[v9]
" \
-map '[v9]' -map '[a9]' \
output.mkv
I hope there are better ways, because there are some problems with it.
For example it needs a lot of memory. (24 GB)
Could use (a)movie filters and only use such filter when actually needed in
graph.
I am concerning ffmpeg still a newbie. What do you mean by this?
I also didn't understand it.
Michael
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