我使用这个命令：
ffmpeg -i main.mp3 -i 1.mp3 -i 2.mp3 -i 3.mp3 \
-filter_complex "\
[0]volume=1[a0]; \
[1]adelay=1000[a1]; \
[2]adelay=2000[a2]; \
[3]adelay=3000[a3]; \
[a0][a1][a2][a3]amix=4:duration=first" \
-y merged.mp3
但我有很多意见。超过500.所以我的模式是这样的：
ffmpeg -i main.mp3 -i 1.mp3 -i 2.mp3 -i 3.mp3 ... [n.mp3] \
-filter_complex "\
[0]volume=1[a0]; \
[1]adelay=1000[a1]; \
[2]adelay=2000[a2]; \
[3]adelay=3000[a3]; \
:
:
[n]adelay=1000000[aN]; \
[a0][a1][a2][a3] ... [aN] amix=[n]:duration=first" \
-y merged.mp3
但我在任何平台上都会遇到错误。
Linux的：
:
:
Input #200, mp3, from 'sounds2/200.mp3':
Metadata:
encoder : Lavf56.25.101
Duration: 00:00:02.95, start: 0.069063, bitrate: 24 kb/s
Stream #200:0: Audio: mp3, 16000 Hz, mono, s16p, 24 kb/s
[amix @ 0x3cffb20] Value 201.000000 for parameter 'inputs' out of range [1 - 32]
Last message repeated 1 times
[amix @ 0x3cffb20] Error setting option inputs to value 201.
[Parsed_amix_201 @ 0x3cffa60] Error applying options to the filter.
[AVFilterGraph @ 0x3b44980] Error initializing filter 'amix' with args '201:duration=first'
Error configuring filters.
Cygwin的：
Stream #199:0 (mp3) -> adelay
Stream #200:0 (mp3) -> adelay
amix -> Stream #0:0 (aac)
Press [q] to stop, [?] for help
[Parsed_adelay_171 @ 00000000041fc0c0] Failed to configure input pad on Parsed_adelay_171
Error reinitializing filters!
Failed to inject frame into filter network: Cannot allocate memory
Error while processing the decoded data for stream #200:0
Conversion failed!
视窗：
The command line is too long.
你的解决方案是什么？