Astoundingly different render sizes when rendering the same animation with the same render settings (from few hundred MB to 4GB) #69225

New Issue

William · 2019-08-27T19:10:17+02:00

William commented

2019-08-27 19:10:17 +02:00

System Information
Operating system: Win 7
Graphics card: R7 360

Blender Version
Broken: (example: 2.80, edbf15d3c0, master, 2018-11-28, as found on the splash screen)
Worked: (optional)

Short description of error
Upon creating a short animation I learned emissions could achieve the same lighting I was going for so I created a new file (See "NEW FILE") and did the same animation (a short 15 second spinning globe with transparency) using emissions and rendered it. The file came out 4GB in size.

Astounded I checked all the settings in my old save (See "OLD FILE") to see if they both had the exact same settings and then rendered it again, only a few hundred MB. So I redid the same animation in the old file with emissions and rendered it again, this time the file size was smaller than the last render from this file (OLD FILE)

In short summary, I have the same animation in 2 save files with the same render settings, when I render from one, it's a few hundred MB when I render from the other or create a new project with those same settings, it comes out a 4GB file.

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

Select a render destination of the attached .blend files and click render.

OLD FILE .blend

NEW FILE .blend

**System Information** Operating system: Win 7 Graphics card: R7 360 **Blender Version** Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen) Worked: (optional) **Short description of error** Upon creating a short animation I learned emissions could achieve the same lighting I was going for so I created a new file (See "NEW FILE") and did the same animation (a short 15 second spinning globe with transparency) using emissions and rendered it. The file came out 4GB in size. Astounded I checked all the settings in my old save (See "OLD FILE") to see if they both had the exact same settings and then rendered it again, only a few hundred MB. So I redid the same animation in the old file with emissions and rendered it again, this time the file size was smaller than the last render from this file (OLD FILE) In short summary, I have the same animation in 2 save files with the same render settings, when I render from one, it's a few hundred MB when I render from the other or create a new project with those same settings, it comes out a 4GB file. **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). Select a render destination of the attached .blend files and click render. [OLD FILE .blend](https://archive.blender.org/developer/F7706459/OLD_FILE_.blend) [NEW FILE .blend](https://archive.blender.org/developer/F7706458/NEW_FILE_.blend)

William commented

2019-08-27 19:10:17 +02:00

Added subscriber: @WillOfTheLand

Tobias elixmann commented

2019-08-27 21:06:07 +02:00

Added subscriber: @TobiasElixmann

Tobias elixmann commented

2019-08-27 21:06:07 +02:00

Hi, i've tested it, there is a diffenrence in these two files:
Under 'Post Processing' in the NewFile 'Dither' is set to 0,5. I've set it to zero and the fileoutput was small.
Please test it on your files.

Hi, i've tested it, there is a diffenrence in these two files: Under 'Post Processing' in the NewFile 'Dither' is set to 0,5. I've set it to zero and the fileoutput was small. Please test it on your files.

William commented

2019-08-29 15:11:05 +02:00

That's interesting because in NEWFILE for me the dither says it's set to 1.0, although I don't remember touching dithering in either file I guess we can put this one down as user error as reducing that to zero did in fact fix the problem, thank you.

William commented

2019-08-29 15:12:12 +02:00

Changed status from 'Open' to: 'Archived'

William closed this issue

2019-08-29 15:12:12 +02:00

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Astoundingly different render sizes when rendering the same animation with the same render settings (from few hundred MB to 4GB) #69225