我正在尝试将一系列图像和视频与音频叠加在一起。以前这种方法可行，但在我添加更多音轨并增加语音音轨的音量后，ffmpeg 突然出现错误No such filter: ' '。我不知道这是为什么，出于某种原因，似乎唯一能解决这个问题的方法就是完全删除所有过滤器和映射。我使用的命令是：
ffmpeg -i DY_1.flac -loop 1 -t 19.5 -i DaddyYankee.jpg -loop 1 -t 21 -i hermanos.png -loop 1 -t 8 -i Mireddys.jpg -loop 1 -t 4 -i Yamilette.jpg -loop 1 -t 3.5 -i Jeremy.jpg -loop 1 -t 5 -i Jesaaelys.jpg -loop 1 -t 17 -i Daddy-Yankee.jpg -ss 68 -t 5 -i Daddy\ Yankee\ -\ Latigazo-oX8aAjtRZrc.mkv -i DY_2.flac -loop 1 -t 1.95 -i DaddyYankee.jpg -i Daddy\ Yankee\ \ \ Rompe\ HQ-1QzlcmHjTCo.mkv -i DY_3.flac -loop 1 -t 1.51 -i DaddyYankee.jpg -i Pose\ -\ Daddy\ Yankee\ \(Official\ Cartel\ version\)-dn28nlMOYfg.mp4 -i DY_4.flac -loop 1 -t 1.57 -i DaddyYankee.jpg -i Daddy\ Yankee\ _\ Dura\ \(Video\ Oficial\)-sGIm0-dQd8M.mkv -i DY_5.flac -loop 1 -t 14.81 -i DaddyYankee.jpg -i Luis\ Fonsi\ -\ Despacito\ ft.\ Daddy\ Yankee-kJQP7kiw5Fk.mkv -i DY_6.flac -loop 1 -t 0.81 -i DaddyYankee.jpg -filter_complex "[1:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [DaddyYankee];\
[2:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [hermanos];\
[3:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Mireddys];\
[4:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Yamilette];\
[5:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jeremy];\
[6:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jesaaelys];\
[7:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee];\
[8:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Latigazo];\
[10:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_2];\
[11:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Rompe];\
[13:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_3];\
[14:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Pose];\
[16:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_4];\
[17:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Dura];\
[19:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_5];\
[20:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Despacito];\
[22:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_6];\
[DaddyYankee][hermanos][Mireddys][Yamilette][Jeremy][Jesaaelys][Daddy-Yankee][Latigazo][Daddy-Yankee_2][Rompe][Daddy-Yankee_3][Pose][Daddy-Yankee_4][Dura][Daddy-Yankee_5][Despacito][Daddy-Yankee_6]concat=n=17:v=1:a=0[outv];\
[0:a:0]volume=1.3[DY_1];\
[9:a:0]volume=1.3[DY_2];\
[12:a:0]volume=1.3[DY_3];\
[15:a:0]volume=1.3[DY_4];\
[18:a:0]volume=1.3[DY_5];\
[21:a:0]volume=1.3[DY_6];\
[DY_1][8:a:0][DY_2][11:a:0][DY_3][14:a:0][DY_4][17:a:0][DY_5][20:a:0][DY_6]concat=n=11:v=0:a=1[outa];" -map "[outv]" -map "[outa]" -r 60 provo.mp4
编辑：我尝试在过滤器末尾添加一个分号来修复它。然而，当我回溯到我的工作命令时，这实际上只会破坏它（此处显示没有额外分号的工作版本）：
ffmpeg -i DY_1.flac -loop 1 -t 19.5 -i DaddyYankee.jpg -loop 1 -t 21 -i hermanos.png -loop 1 -t 8 -i Mireddys.jpg -loop 1 -t 4 -i Yamilette.jpg -loop 1 -t 3.5 -i Jeremy.jpg -loop 1 -t 5 -i Jesaaelys.jpg -loop 1 -t 17 -i Daddy-Yankee.jpg -ss 68 -t 5 -i Daddy\ Yankee\ -\ Latigazo-oX8aAjtRZrc.mkv -filter_complex \
"[1:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [DaddyYankee];\
[2:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [hermanos];\
[3:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Mireddys];\
[4:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Yamilette];\
[5:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jeremy];\
[6:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jesaaelys];\
[7:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee];\
[8:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Latigazo];\
[DaddyYankee][hermanos][Mireddys][Yamilette][Jeremy][Jesaaelys][Daddy-Yankee][Latigazo]concat=n=8:v=1:a=0[outv];\
[0:a:0][8:a:0]concat=n=2:v=0:a=1[outa]" -map "[outv]" -map "[outa]" -r 60 provo.mp4
编辑2：我认为这可能与我的音量变化有关，因为这是有效的：
ffmpeg -i DY_1.flac -loop 1 -t 19.5 -i DaddyYankee.jpg -loop 1 -t 21 -i hermanos.png -loop 1 -t 8 -i Mireddys.jpg -loop 1 -t 4 -i Yamilette.jpg -loop 1 -t 3.5 -i Jeremy.jpg -loop 1 -t 5 -i Jesaaelys.jpg -loop 1 -t 17 -i Daddy-Yankee.jpg -ss 68 -t 5 -i Daddy\ Yankee\ -\ Latigazo-oX8aAjtRZrc.mkv -i DY_2.flac -loop 1 -t 1.95 -i DaddyYankee.jpg -i Daddy\ Yankee\ \ \ Rompe\ HQ-1QzlcmHjTCo.mkv -i DY_3.flac -loop 1 -t 1.51 -i DaddyYankee.jpg -i Pose\ -\ Daddy\ Yankee\ \(Official\ Cartel\ version\)-dn28nlMOYfg.mp4 -i DY_4.flac -loop 1 -t 1.57 -i DaddyYankee.jpg -i Daddy\ Yankee\ _\ Dura\ \(Video\ Oficial\)-sGIm0-dQd8M.mkv -i DY_5.flac -loop 1 -t 14.81 -i DaddyYankee.jpg -i Luis\ Fonsi\ -\ Despacito\ ft.\ Daddy\ Yankee-kJQP7kiw5Fk.mkv -i DY_6.flac -loop 1 -t 0.81 -i DaddyYankee.jpg -filter_complex "[1:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [DaddyYankee];\
[2:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [hermanos];\
[3:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Mireddys];\
[4:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Yamilette];\
[5:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jeremy];\
[6:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Jesaaelys];\
[7:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee];\
[8:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Latigazo];\
[10:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_2];\
[11:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Rompe];\
[13:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_3];\
[14:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Pose];\
[16:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_4];\
[17:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Dura];\
[19:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_5];\
[20:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Despacito];\
[22:v:0]scale=1920:1080:force_original_aspect_ratio=decrease,\
pad=1920:1080:(ow-iw)/2:(oh-ih)/2, setdar=16/9 [Daddy-Yankee_6];\
[DaddyYankee][hermanos][Mireddys][Yamilette][Jeremy][Jesaaelys][Daddy-Yankee][Latigazo][Daddy-Yankee_2][Rompe][Daddy-Yankee_3][Pose][Daddy-Yankee_4][Dura][Daddy-Yankee_5][Despacito][Daddy-Yankee_6]concat=n=17:v=1:a=0[outv];\
[0:a:0][8:a:0][9:a:0][11:a:0][12:a:0][14:a:0][15:a:0][17:a:0][18:a:0][20:a:0][21:a:0]concat=n=11:v=0:a=1[outa]" -map "[outv]" -map "[outa]" -r 60 provo.mp4
顺便说一下，Volume=volume 是我原来的方法，但也没有用。
答案1
删除 中的分号[outa];。filter_complex 中的最后一个过滤器应该没有分号。