Video file preview playback speed is either very slow with 2.6.1, or very fast in the daily build.

[Russs63]

Describe the bug
Video preview playback speed is either very slow with 2.6.1, or very fast in the daily build.

Steps to reproduce the behavior:

1. Load any video file.
2. Click on Preview
3. Video playback speed is very wrong, either too slow w/ 2.61, or too fast w/ 2.6.1-dev.

Expected behavior:
I expect the videos to play back at the normal speed, like every other video rendering program does, with these same files.

System Details

• OpenShot Version: 2.6.1-dev
• libopenshot Version: 0.2.7-dev
• Platform: Windows-7-6.1.7601-SP1
• Processor: Intel64 Family 6 Model 45 Stepping 7, GenuineIntel
• Machine: AMD64
• Python version: 3.8.9
• Qt5 version: 5.15.2
• PyQt5 version: 5.15.4
• Qt Detected Languages: ['en-US']
• LANG Environment Variable:
• LOCALE Environment Variable:
• Daily Build: Verified issue still exists in daily build: http://github.com/OpenShot/openshot-qt/releases/download/OpenShot-v2.6.1-dev-daily-9005-49d6ba3b-2b8b05c7-x86_64.exe

Log Files

• openshot-qt.log (7 KB)
• libopenshot.log: File too small or empty (not uploaded)

Exception / Stacktrace
No stacktrace found in log files

Screenshots (Optional)
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[Russs63]

Just verified that 2.5.0 is working fine... but 2.6.x is very broken wrt preview speeds.

[JacksonRG]

Thanks for your feedback! We're currently working on a fix for this, and will love to hear your feedback when that's complete.

[stale]

Thank you so much for submitting an issue to help improve OpenShot Video Editor. We are sorry about this, but this particular issue has gone unnoticed for quite some time. To help keep the OpenShot GitHub Issue Tracker organized and focused, we must ensure that every issue is correctly labelled and triaged, to get the proper attention.

This issue will be closed, as it meets the following criteria:

• No activity in the past 180 days
• No one is assigned to this issue

We'd like to ask you to help us out and determine whether this issue should be reopened.

• If this issue is reporting a bug, please can you attempt to reproduce on the latest daily build to help us to understand whether the bug still needs our attention.
• If this issue is proposing a new feature, please can you verify whether the feature proposal is still relevant.

Thanks again for your help!