android - 找不到适合 "-i ... "的输出格式

Question

我正在使用 writemind 的 ffmpeg 模块(运行 ffmpeg v3.0.2)
http://writingminds.github.io/ffmpeg-android-java/

但是执行命令时出现以下错误

[NULL @ 0xe93aa000] Unable to find a suitable output format for ' -i "/storage/emulated/0/Android/data/com.charaku.popsical.tv/cache/video_recording.mp4" -i "/storage/emulated/0/Download/132859_aac-group-2.mp4" -c:v copy -filter_complex '[1:a] adelay=2500|2500 [delayed]; [0:a] [delayed] amix [out]' -map 0:v -map '[out]' "/storage/emulated/0/Android/data/com.charaku.popsical.tv/cache/mixed_test2.mp4"' -i "/storage/emulated/0/Android/data/com.charaku.popsical.tv/cache/video_recording.mp4" -i "/storage/emulated/0/Download/132859_aac-group-2.mp4" -c:v copy -filter_complex '[1:a] adelay=2500|2500 [delayed]; [0:a] [delayed] amix [out]' -map 0:v -map '[out]' "/storage/emulated/0/Android/data/com.charaku.popsical.tv/cache/mixed_test2.mp4": Invalid argument

该命令应该将视频文件的音频与另一个音频文件的音频混合以产生新的视频文件。

Answer 1

按照此链接中的建议，能够通过此错误
FFmpeg error Output file #0 does not contain any stream

基本上将每个参数放在自己的数组元素中