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hramos / Armor.h
Created July 26, 2016 19:09
Subclassing PFObject
@interface Armor : PFObject<PFSubclassing>
+ (NSString *)parseClassName;
@end
@hramos
hramos / Armor.h
Created July 26, 2016 19:11
PFSubclassing Properties & Methods
@interface Armor : PFObject<PFSubclassing>
@property (nonatomic, strong) NSString *displayName;
@end
@hramos
hramos / ffmpeg.md
Created August 14, 2019 17:22 — forked from protrolium/ffmpeg.md
using ffmpeg to extract audio from video files

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz: