我在develop版本里面发现有视频录制的功能，编译出来录制失败

[zjyhll]

在https://github.com/befovy/ijkplayer/tree/develop这里面，我发现视频录制的功能
编译之后
调用startRecord后报这个错，请问有人遇到过吗，如何解决
I/flutter (27362): [inf] 2023-06-08 14:37:31.821509 [fijk] FijkPlayer{id:6} takeStartRecord
D/IJKMEDIA(27362): ijkmp_startRecord()
E/IJKMEDIA(27362): Unable to find a suitable output format for '/data/user/0/com.befovy.fijkplayer.demo/cache/1.mp4'
I/IJKMEDIA(27362): ===== 初始化一个用于输出的AVFormatContext结构体 =====
E/IJKMEDIA(27362): Could not create output context filename is /data/user/0/com.befovy.fijkplayer.demo/cache/1.mp4
D/IJKMEDIA(27362): ijkmp_startRecord()=-1
I/flutter (27362): ===》/data/user/0/com.befovy.fijkplayer.demo/cache/1.mp4
I/flutter (27362): [inf] 2023-06-08 14:37:32.387159 [fijk] FijkPlayer{id:6} takeStartRecord
I/flutter (27362): [inf] 2023-06-08 14:37:34.485718 [fijk] FijkPlayer{id:6} takeStopRecord
D/IJKMEDIA(27362): ijkmp_stopRecord()
I/IJKMEDIA(27362): ===== 文件录制结束流程 =====
E/IJKMEDIA(27362): don't need stopRecord
D/IJKMEDIA(27362): ijkmp_stopRecord()=0