Keyframes with stereoscopy button doesn't work in animation, individual frame works #76353

New Issue

Artur · 2020-05-03T00:12:46+02:00

Artur commented

2020-05-03 00:12:46 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92

Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-01 14:06, hash: 60741cfe18
Worked: never, tested 2.75a (when Stereoscopy was introduced) and 2.79

Short description of error
Whole animation is render with stereoscopy ignoring on/off animation keyframes.

Exact steps for others to reproduce the error
with stereoscopy "on" insert a keyframe on it, move few frames and turn off stereoscopy and insert a keyframe. While rendering animation (my setup is FFmpeg with mp4 coding) all frames are rendered as stereoscopic. I attached an example file with render result. I was expecting to have half of this animation as stereoscopic and half normal. Originally I discovered it in a situation where I was swapping cameras (binding to video marker).

Open file, render frames 39-40-41 individually.
in viewport change set frame to 39
Render animation (5 frames)
in viewport, set frame to 41,
Render animation
notice difference in the two.
T76353Stereoscopy.blend

bug reportstereoscopy.blend0001-0250.mkv

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92 **Blender Version** Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-05-01 14:06, hash: `60741cfe18` Worked: never, tested 2.75a (when Stereoscopy was introduced) and 2.79 **Short description of error** Whole animation is render with stereoscopy ignoring on/off animation keyframes. **Exact steps for others to reproduce the error** with stereoscopy "on" insert a keyframe on it, move few frames and turn off stereoscopy and insert a keyframe. While rendering animation (my setup is FFmpeg with mp4 coding) all frames are rendered as stereoscopic. I attached an example file with render result. I was expecting to have half of this animation as stereoscopic and half normal. Originally I discovered it in a situation where I was swapping cameras (binding to video marker). Open file, render frames 39-40-41 individually. in viewport change set frame to 39 Render animation (5 frames) in viewport, set frame to 41, Render animation notice difference in the two. [T76353Stereoscopy.blend](https://archive.blender.org/developer/F8508942/T76353Stereoscopy.blend) [bug reportstereoscopy.blend0001-0250.mkv](https://archive.blender.org/developer/F8508216/bug_reportstereoscopy.blend0001-0250.mkv)

Artur commented

2020-05-03 00:12:46 +02:00

Added subscriber: @arturmachura

Artur commented

2020-05-03 00:17:14 +02:00

bug.blend

[bug.blend](https://archive.blender.org/developer/F8508237/bug.blend)

Ankit Meel commented

2020-05-03 10:45:52 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Ankit Meel commented

2020-05-03 10:46:03 +02:00

Added subscriber: @ankitm

Ankit Meel changed title from ~~animation of stereoscopy button doesn't work~~ to Keyframes with stereoscopy button doesn't work in animation, individual frame works

2020-05-03 10:46:36 +02:00

Ankit Meel commented

2020-05-03 10:47:57 +02:00

animation also seems to depend on the active frame in viewport. The modified steps show that.

ChristopherAnderssarian commented

2020-05-03 17:11:55 +02:00

Added subscriber: @ChristopherAnderssarian

ChristopherAnderssarian commented

2020-05-03 17:11:55 +02:00

I've used this option to cut down on render times for scenes that I didn't need to see the stereo for, at the time. It was on a render farm so each .blend file was opened on the frame that needed to be rendered so animation worked.
I hope this option doesn't get removed.

I've used this option to cut down on render times for scenes that I didn't need to see the stereo for, at the time. It was on a render farm so each .blend file was opened on the frame that needed to be rendered so animation worked. I hope this option doesn't get removed.

Sybren A. Stüvel self-assigned this 2020-05-04 16:27:30 +02:00

Sybren A. Stüvel commented

2020-05-04 16:53:42 +02:00

Changed status from 'Confirmed' to: 'Archived'

Sybren A. Stüvel closed this issue

2020-05-04 16:53:42 +02:00

Sybren A. Stüvel commented

2020-05-04 16:53:42 +02:00

This has never worked. I tested with both 2.75a, which introduced Stereoscopy under the name "Multi-Views", and 2.79 for good measure. From what I can see in the code, it also wasn't designed with animation of this property in mind. The setting affects things like the output format; after all, if you're rendering to a side-by-side image, the output is going to be twice as wide. If you turn this on and off in the middle of a video stream, FFmpeg likely won't be able to encode that video.

Sybren A. Stüvel commented

2020-05-04 16:59:41 +02:00

Added subscribers: @dfelinto, @brecht

Sybren A. Stüvel commented

2020-05-04 16:59:41 +02:00

@brecht @dfelinto What shall I do with this report? On one hand I want to avoid future confusion and make the Stereoscopy checkbox non-animatable. On the other hand, I don't want to break @ChristopherAnderssarian 's workflow either.

ChristopherAnderssarian commented

2020-05-04 18:10:56 +02:00

Well, I've known about this for a while and made a point not to report it, as I know it wasn't designed with animation in mind and will probably end up getting removed.
It's probably just me who has ever used this. But, considering it's been five years and only now a report has come in, can we quietly keep this?

Whether it's using blender in the "wrong way", having functionality removed (in bcon3 of all times) or getting renders unknowingly deleted; you have to admit I'm pretty good at being screwed over in my edge-caseness.
Oh, I've just remembered, @sybren. You once asked me why I didn't like the term design. I think this task and the examples I gave illustrate the troubles I have with....er.. certain things.

Well, I've known about this for a while and made a point not to report it, as I know it *wasn't designed with animation in mind* and will probably end up getting removed. It's probably just me who has ever used this. But, considering it's been five years and only now a report has come in, can we quietly keep this? Whether it's using blender in the "wrong way", having functionality removed (in bcon3 of all times) or getting renders unknowingly deleted; you have to admit I'm pretty good at being screwed over in my edge-caseness. Oh, I've just remembered, @sybren. You once asked me why I didn't like the term *design*. I think this task and the examples I gave illustrate the troubles I have with....er.. certain things.

Brecht Van Lommel commented

2020-05-04 18:29:26 +02:00

Are you saying you are switching between stereo and non-stereo in the middle of a shot? Or this goes along with a camera switch somehow, and what could work better is an option to enable/disable stereo per camera?

Anyway, I don't see any reason to change things in 2.83, if we remove support for animating this it would be in 2.90.

Are you saying you are switching between stereo and non-stereo in the middle of a shot? Or this goes along with a camera switch somehow, and what could work better is an option to enable/disable stereo per camera? Anyway, I don't see any reason to change things in 2.83, if we remove support for animating this it would be in 2.90.

Dalai Felinto commented

2020-05-04 18:40:24 +02:00

I can also think of a scenario where the user switches camera mid-shot (using markers and cameras bind to them) that could potentially also impact multi-view render. But these are really corner cases where the user should know better.

Dalai Felinto commented

2020-05-04 18:41:54 +02:00

Changed status from 'Archived' to: 'Confirmed'

Dalai Felinto reopened this issue

2020-05-04 18:41:54 +02:00

Dalai Felinto commented

2020-05-04 18:41:54 +02:00

Also known issues are to be kept open so other users can find them. If it is to be closed as invalid then its subtype is to be kept as report.

Sybren A. Stüvel removed their assignment 2020-10-01 12:16:17 +02:00

Sybren A. Stüvel commented

2020-10-01 12:16:17 +02:00

Added subscriber: @dr.sybren

Philipp Oeser removed the

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Keyframes with stereoscopy button doesn't work in animation, individual frame works #76353