AVAssetExportSession
drop-in remplacement with customizable audio&video settings.
You want the ease of use of AVAssetExportSession
but default provided presets doesn't fit your needs? You then began to read documentation for AVAssetWriter
, AVAssetWriterInput
, AVAssetReader
, AVAssetReaderVideoCompositionOutput
, AVAssetReaderAudioMixOutput
โฆ and you went out of aspirin? SDAVAssetExportSession
is a rewrite of AVAssetExportSession
on top of AVAssetReader*
and AVAssetWriter*
. Unlike AVAssetExportSession
, you are not limited to a set of presets โ you have full access over audio and video settings.
SDAVAssetExportSession *encoder = [SDAVAssetExportSession.alloc initWithAsset:anAsset];
encoder.outputFileType = AVFileTypeMPEG4;
encoder.outputURL = outputFileURL;
encoder.videoSettings = @
{
AVVideoCodecKey: AVVideoCodecH264,
AVVideoWidthKey: @1920,
AVVideoHeightKey: @1080,
AVVideoCompressionPropertiesKey: @
{
AVVideoAverageBitRateKey: @6000000,
AVVideoProfileLevelKey: AVVideoProfileLevelH264High40,
},
};
encoder.audioSettings = @
{
AVFormatIDKey: @(kAudioFormatMPEG4AAC),
AVNumberOfChannelsKey: @2,
AVSampleRateKey: @44100,
AVEncoderBitRateKey: @128000,
};
[encoder exportAsynchronouslyWithCompletionHandler:^
{
if (status == AVAssetExportSessionStatusCompleted)
{
NSLog(@"Video export succeeded");
}
else if (status == AVAssetExportSessionStatusCancelled)
{
NSLog(@"Video export cancelled");
}
else
{
NSLog(@"Video export failed with error: %@ (%d)", error.localizedDescription, error.code);
}
}];