Reversing frames on video sequencer don't play them backwards #75178

New Issue

ronsn · 2020-03-29T04:02:00+02:00

(Deleted) commented

2020-03-29 04:02:00 +02:00

(Migrated from localhost:3001)

System Information
Operating system: Windows 10
Graphics card: Nividia GEFORCE 940MX

Blender Version
Broken: ( 2.82a, 2020-3-12, as found on the splash screen)

Short description of error
Reversing frames do not play the frames backward as expected to when the strip is split.

Exact steps for others to reproduce the error
video sequencer -> Add an image strip -> cut the stip into 2 or three parts -> select the middle stip ->check the reverse frame checkbox.Reverse.blend

**System Information** Operating system: Windows 10 Graphics card: Nividia GEFORCE 940MX **Blender Version** Broken: ( 2.82a, 2020-3-12, as found on the splash screen) **Short description of error** Reversing frames do not play the frames backward as expected to when the strip is split. ``` ``` **Exact steps for others to reproduce the error** video sequencer -> Add an image strip -> cut the stip into 2 or three parts -> select the middle stip ->check the reverse frame checkbox.[Reverse.blend](https://archive.blender.org/developer/F8434631/Reverse.blend)

(Deleted) commented

2020-03-29 04:02:00 +02:00

(Migrated from localhost:3001)

Added subscriber: @(Deleted)

ronsn commented

2020-03-29 06:23:56 +02:00

Added subscriber: @ronsn

ronsn commented

2020-03-29 06:23:56 +02:00

It seems that the reversed frames are not shown at all?

(Deleted) commented

2020-03-29 07:08:47 +02:00

(Migrated from localhost:3001)

In #75178#899666, @ronsn wrote:
It seems that the reversed frames are not shown at all?

I am not sure why that's happening. Try rendering under png format and put that in video sequence editor. Split that into 3 clips and preview the middle clip, then check the reverse checkbox and preview it.

> In #75178#899666, @ronsn wrote: > It seems that the reversed frames are not shown at all? I am not sure why that's happening. Try rendering under png format and put that in video sequence editor. Split that into 3 clips and preview the middle clip, then check the reverse checkbox and preview it.

ronsn commented

2020-03-29 07:16:56 +02:00

@JackSonPro For me it sounds like a critical bug, but I have to admit, that it's very late here (where I am from), so maybe I (or someone else) will take a look at this behavior later!

Ankit Meel changed title from ~~Reversing frames on video sequencer~~ to Reversing frames on video sequencer don't play them backwards

2020-03-29 10:57:33 +02:00

ronsn commented

2020-03-29 22:30:08 +02:00

@JackSonPro Can you please recheck with this video , which I made? It's CC-0 btw.

sinus_thing.mp4
For me it worked with Blender version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: 77d23b0bd7
It played correct in preview and as rendered video.

System specs here:
Operating system: Linux-5.3.0-42-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21

@JackSonPro Can you please recheck with [this video ](https://dev-files.blender.org/file/data/wawoivqvzxcmqcyl3ogz/PHID-FILE-pq76l5b74ibhn67ueqxj/sinus_thing.mp4), which I made? It's CC-0 btw. [sinus_thing.mp4](https://archive.blender.org/developer/F8435710/sinus_thing.mp4) For me it worked with Blender version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: `77d23b0bd7` It played correct in preview and as rendered video. System specs here: Operating system: Linux-5.3.0-42-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21

ronsn commented

2020-03-29 22:32:03 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

(Deleted) commented

2020-03-30 07:46:58 +02:00

(Migrated from localhost:3001)

Screen Recording (3-30-2020 11-09-23 AM).wmv well the first screen recording is an image sequence, second is a video sequence.
As you could see that reversing a specific clip is not working as expected to.

[Screen Recording (3-30-2020 11-09-23 AM).wmv](https://archive.blender.org/developer/F8436371/Screen_Recording__3-30-2020_11-09-23_AM_.wmv) well the first screen recording is an image sequence, second is a video sequence. As you could see that reversing a specific clip is not working as expected to.

ronsn commented

2020-03-30 20:56:39 +02:00

@JackSonPro The VSE is using only one CPU core for this operation so it is a little bit lagging on bigger video files. That is, why I asked you to use my video and check again.

For your video project you should consider using *Proxies //.

So can you please recheck with my video and/or your video with proxies? :)

@JackSonPro The *VSE* is using only one CPU core for this operation so it is a little bit lagging on bigger video files. That is, why I asked you to use my video and check again. For your video project you should consider using *[Proxies ](https:*docs.blender.org/manual/en/2.82/video_editing/sequencer/properties/proxy_cache.html)//. So can you please recheck with my video and/or your video with proxies? :)

(Deleted) commented

2020-03-31 05:46:35 +02:00

(Migrated from localhost:3001)

Screen Recording .wmv

[Screen Recording .wmv](https://archive.blender.org/developer/F8438192/Screen_Recording_.wmv)

ronsn commented

2020-03-31 13:47:02 +02:00

@JackSonPro We already knew that this 43 frame long video worked without proxies :D
What about the video with the forest?^^

@JackSonPro We already knew that this 43 frame long video worked without proxies :D What about the video with the forest?^^

(Deleted) commented

2020-03-31 16:47:04 +02:00

(Migrated from localhost:3001)

Screen Recording (3-31-2020 7-55-30 PM).wmv

[Screen Recording (3-31-2020 7-55-30 PM).wmv](https://archive.blender.org/developer/F8439278/Screen_Recording__3-31-2020_7-55-30_PM_.wmv)

ronsn commented

2020-04-01 23:02:12 +02:00

Changed status from 'Needs User Info' to: 'Archived'

ronsn closed this issue

2020-04-01 23:02:12 +02:00

ronsn self-assigned this 2020-04-01 23:02:12 +02:00

ronsn commented

2020-04-01 23:02:12 +02:00

@JackSonPro So it works as expected. Therefore I'm gonna close this task. Thanks for the report anyway :)

(Deleted) commented

2020-04-02 02:39:10 +02:00

(Migrated from localhost:3001)

How is it working as expected? Isn't it supposed to reverse frames only in that specific region. Didn't I show how these frames were to be played when playes backwards. Well I think blender is still trying to reverse the whole video and then trying to match it with the middle clip. So can I know how will I be able to reverse only those frames in specific region? Almost all the video editors I have worked with in the past never tried to match it into specific regions by reversing the whole video.

ChristopherAnderssarian commented

2020-04-02 10:49:22 +02:00

Added subscriber: @ChristopherAnderssarian

ChristopherAnderssarian commented

2020-04-02 10:49:22 +02:00

Changed status from 'Archived' to: 'Needs User Info'

ChristopherAnderssarian reopened this issue

2020-04-02 10:49:22 +02:00

ronsn was unassigned by ChristopherAnderssarian

2020-04-02 10:49:22 +02:00

ChristopherAnderssarian commented

2020-04-02 10:49:22 +02:00

@ronsn The report is about image sequence strips.
@JackSonPro I'm trying to reproduce, but can't get the same behaviour.
Could you upload the images you used (or images that work)?
Here's my attempt at reproducing:
#75178 (2.82a).zip
Could you give this a go?

@ronsn The report is about image sequence strips. @JackSonPro I'm trying to reproduce, but can't get the same behaviour. Could you upload the images you used (or images that work)? Here's my attempt at reproducing: [#75178 (2.82a).zip](https://archive.blender.org/developer/F8443032/T75178__2.82a_.zip) Could you give this a go?

(Deleted) commented

2020-04-02 11:17:21 +02:00

(Migrated from localhost:3001)

In #75178#902037, @ChristopherAnderssarian wrote:
@ronsn The report is about image sequence strips.
@JackSonPro I'm trying to reproduce, but can't get the same behaviour.
Could you upload the images you used (or images that work)?
Here's my attempt at reproducing:
#75178 (2.82a).zip
Could you give this a go?

Cube.zip

> In #75178#902037, @ChristopherAnderssarian wrote: > @ronsn The report is about image sequence strips. > @JackSonPro I'm trying to reproduce, but can't get the same behaviour. > Could you upload the images you used (or images that work)? > Here's my attempt at reproducing: > [#75178 (2.82a).zip](https://archive.blender.org/developer/F8443032/T75178__2.82a_.zip) > Could you give this a go? [Cube.zip](https://archive.blender.org/developer/F8443088/Cube.zip)

ronsn commented

2020-04-02 16:26:06 +02:00

@JackSonPro:
Your video "Screen Recording (3-31-2020 7-55-30 PM).wmv" shows a camera movement forward into a forest.
At minute 1:19 you reversed the middle part and played the sequence again. The middle part now shows a camera movement backwards out of the forest, where the other two parts are showing the movement forward into the forest.
So the middle part is playing reversed as intended.

But maybe I misunderstood your words, which you wrote each time ;)

@ChristopherAnderssarian Yes I tested it also with image sequences and gave the sinus video because of the file size to let one convert it into sequences if needed, but got no feedback :D

@JackSonPro: Your video "*Screen Recording (3-31-2020 7-55-30 PM).wmv*" shows a camera movement **forward into** a forest. At minute 1:19 you reversed the middle part and played the sequence again. The middle part now shows a camera movement **backwards out of** the forest, where the other two parts are showing the movement **forward into** the forest. So the middle part is playing reversed as intended. But maybe I misunderstood your words, which you wrote each time ;) @ChristopherAnderssarian Yes I tested it also with image sequences and gave the sinus video because of the file size to let one convert it into sequences if needed, but got no feedback :D

(Deleted) commented

2020-04-02 16:43:13 +02:00

(Migrated from localhost:3001)

@ronsn at 1:47 I unchecked the reverse check box and around 1:56 moved the Playhead backwards and well u could see the difference, camera doesn't come through the leaves when moving the Playhead backwards with reverse box unchecked.

Richard Antalik commented

2020-04-02 21:00:00 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-04-02 21:00:00 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Richard Antalik commented

2020-04-02 21:00:00 +02:00

This is technically working as it was originally intended, but I agree that it is not desirable.

There are a lot of issues like this, parent task is #59540. This will be fixed at some point but I won't treat it as a bug right now.

This is technically working as it was originally intended, but I agree that it is not desirable. There are a lot of issues like this, parent task is #59540. This will be fixed at some point but I won't treat it as a bug right now.

Tard commented

2022-05-20 20:18:15 +02:00

Added subscriber: @Tard187

Tard commented

2022-05-20 20:18:15 +02:00

Was this fixed? I don't want to deal with update just to find out its still not working, thanks!

NEVERMIND, I figured it out, works as intended with hold cut, I was just cutting the strip

Was this fixed? I don't want to deal with update just to find out its still not working, thanks! NEVERMIND, I figured it out, works as intended with hold cut, I was just cutting the strip

Philipp Oeser removed the

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Reversing frames on video sequencer don't play them backwards #75178