我如何获得录制音频文件的最大限制?
How can i get what is maximum limit for record audio file?
目前我正在使用 AVAudioSession 在 iOS 中录制音频,但录制超过 50 分钟时会出现问题。超过 50 分钟重新编码无法使用 AVAudioPlayer 播放。
谁能告诉录制音频的最大限制是多少。
我找不到它的最大限制,但这里有一个代码将它限制在特定的秒数内,这样你就可以尝试找出限制是多少
Setting a time limit when recording an audio clip?
iPhone中的记录文件没有限制。
但在保存到应用程序文档目录之前。在 iPhone 检查可用的 space 然后保存,这样丢失文件的可能性就会降低。
以下代码可在 iPhone 中免费查看 space。
-(uint64_t)getFreeDiskspace {
NSString *folderPath = [[NSBundle mainBundle] bundlePath];
NSArray *filesArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:folderPath error:nil];
NSEnumerator *filesEnumerator = [filesArray objectEnumerator];
NSString *fileName;
unsigned long long int fileSize = 0;
while (fileName = [filesEnumerator nextObject]) {
NSDictionary *fileDictionary = [[NSFileManager defaultManager] fileAttributesAtPath:[folderPath stringByAppendingPathComponent:fileName] traverseLink:YES];
fileSize += [fileDictionary fileSize];
}
NSLog(@"App size : %lld",fileSize);
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
NSError *attributesError = nil;
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[paths lastObject] error:&attributesError];
NSLog(@"App Directory size %llu",[fileAttributes fileSize]);
if (dictionary) {
NSNumber *fileSystemSizeInBytes = [dictionary objectForKey: NSFileSystemSize];
NSNumber *freeFileSystemSizeInBytes = [dictionary objectForKey:NSFileSystemFreeSize];
totalSpace = [fileSystemSizeInBytes unsignedLongLongValue];
totalFreeSpace = [freeFileSystemSizeInBytes unsignedLongLongValue];
NSLog(@"Memory Capacity of %llu MiB with %llu MiB Free memory available.", ((totalSpace)), ((totalFreeSpace)));
} else {
NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
// NSLog(@"DISK SPACE %f",[self diskSpace]);
// NSLog(@"GET FREE SPACE %lld",[self getFreeSpace]);
return totalFreeSpace;
}
- (long long)getFreeSpace
{
long long freeSpace = 0.0f;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
if (dictionary) {
NSNumber *fileSystemFreeSizeInBytes = [dictionary objectForKey: NSFileSystemFreeSize];
freeSpace = [fileSystemFreeSizeInBytes longLongValue];
} else {
//Handle error
NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
NSLog(@"Free Space %lli",freeSpace);
return (freeSpace);
}
目前我正在使用 AVAudioSession 在 iOS 中录制音频,但录制超过 50 分钟时会出现问题。超过 50 分钟重新编码无法使用 AVAudioPlayer 播放。
谁能告诉录制音频的最大限制是多少。
我找不到它的最大限制,但这里有一个代码将它限制在特定的秒数内,这样你就可以尝试找出限制是多少
Setting a time limit when recording an audio clip?
iPhone中的记录文件没有限制。 但在保存到应用程序文档目录之前。在 iPhone 检查可用的 space 然后保存,这样丢失文件的可能性就会降低。
以下代码可在 iPhone 中免费查看 space。
-(uint64_t)getFreeDiskspace {
NSString *folderPath = [[NSBundle mainBundle] bundlePath];
NSArray *filesArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:folderPath error:nil];
NSEnumerator *filesEnumerator = [filesArray objectEnumerator];
NSString *fileName;
unsigned long long int fileSize = 0;
while (fileName = [filesEnumerator nextObject]) {
NSDictionary *fileDictionary = [[NSFileManager defaultManager] fileAttributesAtPath:[folderPath stringByAppendingPathComponent:fileName] traverseLink:YES];
fileSize += [fileDictionary fileSize];
}
NSLog(@"App size : %lld",fileSize);
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
NSError *attributesError = nil;
NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[paths lastObject] error:&attributesError];
NSLog(@"App Directory size %llu",[fileAttributes fileSize]);
if (dictionary) {
NSNumber *fileSystemSizeInBytes = [dictionary objectForKey: NSFileSystemSize];
NSNumber *freeFileSystemSizeInBytes = [dictionary objectForKey:NSFileSystemFreeSize];
totalSpace = [fileSystemSizeInBytes unsignedLongLongValue];
totalFreeSpace = [freeFileSystemSizeInBytes unsignedLongLongValue];
NSLog(@"Memory Capacity of %llu MiB with %llu MiB Free memory available.", ((totalSpace)), ((totalFreeSpace)));
} else {
NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
// NSLog(@"DISK SPACE %f",[self diskSpace]);
// NSLog(@"GET FREE SPACE %lld",[self getFreeSpace]);
return totalFreeSpace;
}
- (long long)getFreeSpace
{
long long freeSpace = 0.0f;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];
if (dictionary) {
NSNumber *fileSystemFreeSizeInBytes = [dictionary objectForKey: NSFileSystemFreeSize];
freeSpace = [fileSystemFreeSizeInBytes longLongValue];
} else {
//Handle error
NSLog(@"Error Obtaining System Memory Info: Domain = %@, Code = %ld", [error domain], (long)[error code]);
}
NSLog(@"Free Space %lli",freeSpace);
return (freeSpace);
}