How to save a _flutterFFmpeg gif in firebase storage? - firebase

Question

Edit:
After some changes with help from #Frank van Puffelen
I getting a new error see below updated code and updated error
Hello everyone im trying to save a gif which I create with flutter_ffmpeg: ^0.4.2
With this code im trying to create a gif of picked video from user which is currently widget.videopathasstring
THis is the path of picked video.
Directory gifDirectory;
String gifOutputFile;
getpreviewvideo() async {
String currentvideo = widget.videopathasstring;
await getApplicationDocumentsDirectory().then((directory) {
print("13");
gifDirectory = Directory(directory.path + '/gif');
print("14");
gifDirectory.exists().then((exists) async {
print("0");
if (!exists) {
print("1");
await gifDirectory.create();
}
}).then((value) => {
print("3"),
gifOutputFile = gifDirectory.path +
'/' +
DateTime.now().millisecondsSinceEpoch.toString() +
'.gif',
});
});
print("4");
var arguments = [
'-i',
currentvideo,
'-t',
'2.5',
'-ss',
'2.0',
'-f',
'gif',
gifOutputFile,
];
_flutterFFmpeg.executeWithArguments(arguments).then((rc) {
print("FFmpeg process exited with rc $rc");
});
return File(gifOutputFile);
}
The problem is im getting this error
GTMSessionFetcher invoking fetch callbacks, data {length = 0, bytes = 0x}, error (null)
2
GTMSessionFetcher invoking fetch callbacks, data {length = 613, bytes = 0x7b0a2020 226e616d 65223a20 22616c6c ... 36316263 34220a7d }, error (null)
flutter: 13
flutter: 14
flutter: 4
flutter: Invalid argument(s) (path): Must not be null
flutter: 0
-[NSNull length]: unrecognized selector sent to instance 0x1dc5f0558
flutter: 3
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSNull length]: unrecognized selector sent to instance 0x1dc5f0558'
*** First throw call stack:
(0x181e8904c 0x19a4fdf54 0x181f66014 0x181e1e474 0x181e1d5b0 0x181e15410 0x181e0d0a0 0x100e3c4b8 0x100e3b324 0x100e3bb24 0x10065528c 0x181af9914 0x181afb660 0x181afe788 0x181b0cdd0 0x181b0d5f8 0x1f212a0b8 0x1f2129e94)
libc++abi: terminating with uncaught exception of type NSException
* thread #65, queue = 'com.apple.root.default-qos', stop reason = signal SIGABRT
frame #0: 0x00000001b8cd0964 libsystem_kernel.dylib`__pthread_kill + 8
libsystem_kernel.dylib`__pthread_kill:
-> 0x1b8cd0964 <+8>: b.lo 0x1b8cd0984 ; <+40>
0x1b8cd0968 <+12>: pacibsp
0x1b8cd096c <+16>: stp x29, x30, [sp, #-0x10]!
0x1b8cd0970 <+20>: mov x29, sp
Target 0: (Runner) stopped.
Lost connection to device.
Exited (sigterm)
Hope anyone can help

Answer 1

It seems you're not uploading the file to Cloud Storage, which only happens once you call putFile.
Have a look at the FlutterFire documentation on uploading files for an example of how to use putFile