iphone - How to append two audio files? -

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i want append 2 audio files in iphone. please me this.

i got solution; following sample code it.

avmutablecomposition* composition = [avmutablecomposition composition]; avurlasset* audioasset1 = [[avurlasset alloc]initwithurl:[nsurl fileurlwithpath:filepath1] options:nil]; avurlasset* audioasset2 = [[avurlasset alloc]initwithurl:[nsurl fileurlwithpath:filepath2] options:nil];  avmutablecompositiontrack *audiotrack1 = [composition addmutabletrackwithmediatype:avmediatypeaudio                                                                        preferredtrackid:kcmpersistenttrackid_invalid];  [audiotrack1 inserttimerange:cmtimerangemake(kcmtimezero, audioasset1.duration)                          oftrack:[[audioasset1 trackswithmediatype:avmediatypeaudio] objectatindex:0]                           attime:kcmtimezero                            error:&error]; [audiotrack1 inserttimerange:cmtimerangemake(kcmtimezero, audioasset2.duration)                           oftrack:[[audioasset2 trackswithmediatype:avmediatypeaudio] objectatindex:0]                            attime:audioasset1.duration                            error:&error];

finally, have export single file using avassetexportsession.

note: work .m4a files


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