ios - AVAssetExportSession working in background -

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i tried manage avassetexportsession working when app in background. have ios 6 device , testing there. m making audio mix , trying export audio. when app in foreground m making ok, if m going background m getting avassetexportsessionstatusfailed , have create beginning. so, ever possible make audio mixing work in background?

i m trying make [exportsession exportasynchronouslywithcompletionhandler: ] in nsoperationqueue or getting global queue - results same - stops when app going in background , sending failed afterwards.

does have example avassetexportsession working in background?

i have found solution works audio, have not tried video

if update "background modes" setting in capabilities of project include audio. allow export.

this intended playing music in background.

---- edit ---

this works video

enter image description here


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