# SDAVAssetExportSession

**Repository Path**: reyzhang/SDAVAssetExportSession

## Basic Information

- **Project Name**: SDAVAssetExportSession
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-12-16
- **Last Updated**: 2021-12-16

## Categories & Tags

**Categories**: Uncategorized

**Tags**: 视频压缩, github导入

## README

SDAVAssetExportSession
======================

`AVAssetExportSession` drop-in replacement 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`… 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 – you have full access over audio and video settings.


Usage Example
-------------

``` objective-c
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 (encoder.status == AVAssetExportSessionStatusCompleted)
    {
        NSLog(@"Video export succeeded");
    }
    else if (encoder.status == AVAssetExportSessionStatusCancelled)
    {
        NSLog(@"Video export cancelled");
    }
    else
    {
        NSLog(@"Video export failed with error: %@ (%d)", encoder.error.localizedDescription, encoder.error.code);
    }
}];

```

Licenses
--------

All source code is licensed under the [MIT-License](https://github.com/rs/SDAVAssetExportSession/blob/master/LICENSE).