make videowriter multi-thread compatible (Patch #1352)

Added by sebastien wybo over 13 years ago. Updated about 12 years ago.

Status:Done Start date:
Priority:Normal Due date:
Assignee:Vadim Pisarevsky % Done:

100%
Category:highgui-video
Target version:2.4.4
Affected version:2.4.2 Operating System:
Difficulty: HW Platform:
Pull request:

Description

It is currently not possible to perform simultaneous writes from different threads
It would be interesting to have such a possibility although I'm not sure ffmpeg authorizes this

sjbyun-ffmpeg-patch.patch (2.3 kB) Kirill Kornyakov, 2012-07-05 08:40 am

Issue hierarchy

Patch #1352: make videowriter multi-thread compatibleDoneVadim Pisarevsky

Bugfix #1369: Multi-threaded FFMPEG accesses crashDoneVadim Pisarevsky

History

#1
Updated by Alexander Shishkov almost 13 years ago

  • Priority changed from High to Normal
  • Target version deleted ()

#2
Updated by Alexander Shishkov almost 13 years ago

  • Target version deleted ()

#3
Updated by Kirill Kornyakov over 12 years ago

A patch from SungJoo Byun. We should verify it.

Hi~ =
I believe that this bug can be solved by adding av_lockmgr_register().=
It is FFMPEG's lock mechanism. =
Please, refer to attached patch =
Regards,
Vadim

  • Tracker changed from Bug to Patch
  • File sjbyun-ffmpeg-patch.patch added

#4
Updated by Andrey Kamaev over 12 years ago

  • Category changed from highgui-images to highgui-video

#5
Updated by Vadim Pisarevsky over 12 years ago

I've seen a similar patch already; need to check

  • Target version deleted ()

#6
Updated by Ilya Lavrenov over 12 years ago

  • Assignee set to Ilya Lavrenov

#7
Updated by Kirill Kornyakov over 12 years ago

  • Target version set to Next Hackathon

#8
Updated by Kirill Kornyakov over 12 years ago

  • Priority changed from Low to Normal

#9
Updated by Vadim Pisarevsky about 12 years ago

once again, this seems to be fixed already; need to verify

  • Target version deleted (Next Hackathon)

#10
Updated by Vadim Pisarevsky about 12 years ago

  • Assignee deleted (Ilya Lavrenov)

#11
Updated by Vadim Pisarevsky about 12 years ago

  • Assignee set to Vadim Pisarevsky

#12
Updated by Vadim Pisarevsky about 12 years ago

looks like now the problem is solved using a solution very similar to the proposed. If it still does not work, please, reopen the ticket

  • Affected version set to 2.4.2
  • Status changed from Open to Done

#13
Updated by Vadim Pisarevsky about 12 years ago

  • % Done changed from 0 to 100

#14
Updated by Kirill Kornyakov about 12 years ago

  • Target version set to 2.4.4

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