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rFlex / SCRecorder

iOS camera engine with Vine-like tap to record, animatable filters, slow motion, segments editing
Apache License 2.0
3.06k stars 583 forks source link

Very slow export #184

Open wojczitsu opened 9 years ago

wojczitsu commented 9 years ago

I'm using SCAssetExportSession (just adding watermark to video). Saving/exporting to camera roll 1min video takes:

This is really slow. Is this normal? Thanks for help

CaptainKurt commented 9 years ago

I am also experience a slow exporting time using mergeSegmentsUsingPreset that I am trying to handle. Takes about 15 seconds and fails about 10% of the time.

yarikpwnzer commented 9 years ago

iPhone 4 - 3 min video - 11 min exporting.

fayhot commented 9 years ago

maybe all of you should try to adjust the export arguments. I did that just 10 seconds. by the way, the record video is also short, that less than 60s.

rFlex commented 9 years ago

Can you guys try using the v2.5.1 version and then fallback to v2.4.9. Tell me which one is the fastest.

The v2.5.0 introduced the multithreaded exporter which is supposed to greatly improve compression speed on devices that has multiple cores. If It doesn't work as expected for everyone I will have to do some additional work on that.

Thanks!

wojczitsu commented 9 years ago

No change. Still too slow.

rFlex commented 9 years ago

But which version is the fastest? Can you elaborate?

mitchellporter commented 8 years ago

@fayhot Could you please share your export settings?

mqaiserbutt commented 8 years ago

Anyone got solution to this ? I'm also facing the very slow export here. I'm using the latest library code but facing exactly these issues at my ipad mini

on iPad mini 1st gen - 90 seconds and crash on 25% progress