AVfoundation Reverse Video

Question

I tried to make video in reverse. While playing asset in AVPlayer i set the rate = -1 to make it work in reverse format. But how to export that video? I looked into docs. read about avassetwrite, sambuffers , compositions but didn't find any way to do this. Below links are refered by me

http://www.raywenderlich.com/13418/how-to-play-record-edit-videos-in-ios

Reverse video demo - https://github.com/mikaelhellqvist/ReverseClip

Above example to no longer works in IOS 8. and even it is not reversing audio. If anyone give me little hint on it then i can do further. I am stuck up here from last 5 days but didn't find any answer in docs.

Legato

Have you found a solution? – Roussel

Hi Amit, Any luck on above. I am also looking for the same thing. If any please let me know. Thanks – Cryptic

The same problem, giving upvote. – Chlores

same issue here? Anyone get the answer ? – Hixon

[#12194273 , maybe my answer can help you) – Handclasp

Any one got the solution for this........:) – Burgeon

Still no success, using avassetreader with high quality video app crashes even in iphone 7. I asked this question long time ago but still no help. Something like monopoly in video editing apps in ios, only few people can work & submit apps stors for video editing. – Legato

Answer 1

You'll probably have to play around with AVAssetExportSession ( MOV to Mp4 video conversion iPhone Programmatically ) - if it won't work, then your option will be to use AVAssetReader and AVAssetWriter and reverse the frames inbetween (don't know about the sound though).

Geology