# mp4 writer sometimes not trigger finishWritingWithCompletionHandler on internet lost

**URL:** <https://community.wowza.com/t/mp4-writer-sometimes-not-trigger-finishwritingwithcompletionhandler-on-internet-lost/54084>\
**Category:** Wowza GoCoder SDK\
**Created:** [October 18, 2019, 7:19am UTC](https://community.wowza.com/t/mp4-writer-sometimes-not-trigger-finishwritingwithcompletionhandler-on-internet-lost/54084 "2019-10-18T07:19:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jeremie\_PERERA](https://avatars.discourse-cdn.com/v4/letter/j/b2d939/32.png) [@Jeremie\_PERERA](https://community.wowza.com/u/Jeremie_PERERA)\
**Post date:** [October 18, 2019, 7:19am UTC](https://community.wowza.com/t/mp4-writer-sometimes-not-trigger-finishwritingwithcompletionhandler-on-internet-lost/54084/1 "2019-10-18T07:19:51Z")

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Hello,

I have some problem.

Sometimes on my iOS app, when i was streaming and i lost the internet connection, the mp4 writting not trigger finishWritingWithCompletionHandler, so i lost my video.

Have you ever notice this ?