我正在为DASH(无音频(创建一组文件，其中包含：
ffmpeg -i "input.mov"
-y
-keyint_min 100 -g 100
-sc_threshold 0
-c:v libx264
-pix_fmt yuv420p
-map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
-map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
-map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
-map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
-init_seg_name "myname_$RepresentationID$.$ext$"
-media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
-use_template 1 -use_timeline 1
-seg_duration 4 -adaptation_sets "id=0,streams=v"
-f dash "myname.mpd"
现在我想添加水印。它是如何完成的？我试过类似的东西：
ffmpeg -i "input.mov"
-y
-i "watermark.png" // Added
-filter_complex "overlay=24:960" // Added
-keyint_min 100 -g 100
-sc_threshold 0
-c:v libx264
-pix_fmt yuv420p
-map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
-map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
-map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
-map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
-init_seg_name "myname_$RepresentationID$.$ext$"
-media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
-use_template 1 -use_timeline 1
-seg_duration 4 -adaptation_sets "id=0,streams=v"
-f dash "myname.mpd"
但这导致只能获得180p版本的视频。如何仍然可以获得带有覆盖的视频的所有版本？
已添加：我也试过了：
ffmpeg -i "input.mov"
-y
-i "watermark.png"
-filter_complex "[0:v][1:v]overlay=24:960[out0][out1][out2][out3]"
-keyint_min 100 -g 100
-sc_threshold 0
-c:v libx264
-pix_fmt yuv420p
-map "[out0]" -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
-map "[out1]" -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
-map "[out2]" -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
-map "[out3]" -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
-init_seg_name "myname_$RepresentationID$.$ext$"
-media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
-use_template 1 -use_timeline 1
-seg_duration 4 -adaptation_sets "id=0,streams=v"
-f dash "myname.mpd"
这导致错误：没有输出焊盘可以与链接标签"out1"关联。
添加拆分过滤器：
ffmpeg -i "input.mov"
-y
-i "watermark.png"
-filter_complex "[0:v][1:v]overlay=24:960,format=yuv420p,split=4[out0][out1][out2][out3]"
-keyint_min 100 -g 100
-sc_threshold 0
-c:v libx264
-map "[out0]" -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
-map "[out1]" -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
-map "[out2]" -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
-map "[out3]" -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
-init_seg_name "myname_$RepresentationID$.$ext$"
-media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
-use_template 1 -use_timeline 1
-seg_duration 4 -adaptation_sets "id=0,streams=v"
-f dash "myname.mpd"