Media Texture video playback too fast in sequencer render output

Development Architectural and Design Visualization
21

I would also like to vote for this to be fixed. A lot of arch viz guys can run into this same problem if not fixed.

22

I am truly hoping for a fix but I am a bit devastated to see that there are threads on this forum dated back from 2015. I don’t think the guys are planning to fix anytime soon.

23

If you don’t want to have problems with the video render in sequencer use this method i use: https://www.youtube.com/watch?v=vNv7…xzanderTheGeek

24

I described this workaround at the start of the thread. It is very inconvenient and you have to revert back to an mp4 if you want to package your product to a reasonable size.

25

Thanks alexzander1947 so much much for the video. It really fixes the synchronization problem. Just note that as in this way is just necessary to have video in a frame by frame sequence, without using VLC I could export it from Final Cut pro in my case and changed the media source from file media source to image media source. I understand IslandPlaya mentioned it before, but I could not understand how to do that, thanks anyway…

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thank you for the Video! Would this work with png sequence in 4k with alpha channel?

27

Yoo guys

Anyone else experience heavy lag while rendering video textures with the sequencer? After a couple of frames the render freezes for a couple of seconds and then continues. The end result is synchronised though but it is a pain to wait so long.

I use 2 video png seq textures, 1 is with alpha so obviously it is heavy.

I see on the IMG source in the sequencer there are green lines indicating what is loaded, this is constantly a small portion of the whole clip. Is this loaded in RAM or on the graphic card? Is there a way to extend the availibility of ram so more can be stored? Or is this not the problem?

I have a 3090 card and 64GB ram so I think I should have enough… let me know!

28

I think I found it now! In Project Settings search for ‘Cache’ and set the cach size GB and Global Cache Size GB to a higher number. It was set to 1.0 by deafult but in my case I can easily set it to 55. Now it plays muuuuch smoother!

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29

@CINEMARKS You are a F%¤&¤ life saver!!! Thank you thank you! :slight_smile:

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30

Hi All. I want to join the rant.
May 29, 2021 and the video sources are playing much faster than the exported video footage.
Some important notes:

  • We are using the same FPS both for the level sequencer, child sequencers and all the video tracks - 24fps
  • We CANNOT use the technique proposed above according to which we should convert our videos to sequence of images. Not every app made with UE4 is a game and not all the video use cases contains short videos. We are using UE4 for cinematic editing and we put dozens of video footages into sequencers which can be manipulated by users in runtime.
  • Another pretty “weird” thing is happing when rendering videos via the Render Queue and enabling AA. In this case UE spits all the intermediate frames used for multi-sampling into the output, which makes the resulting image sequence pretty useless to transcode into video files.

To summarize:
Dear Epic, you put substantial efforts (which is much appreciated)to push UE4 usage into non gaming industries, especially into video /cinematic production. Please take care of these bugs as those quickly become deal breaker for anyone who is trying to use the cinematic features of the engine professionally. We also encounter inconsistent and buggy behavior of the level sequencer, especially when using spawnable actors. Recently we stopped using spawnable actors as we could not resolve bugs like invalid transforms of the actors /actor disappearance, which were happening sporadically. Also filed several bugs related to these anomalies.
Our current feel as someone who is heavily using sequencer and other cinematic systems of the engine is that it is all in a very raw state and there is still a lot of work to be done to get it stable for commercial usage.
If anybody from Epic’s staff would like to get in touch and learn about our challenges and issues we have, here is the contact email: info at codeartworks.com

4 Likes
31

Here is the UPDATE to the video playback speed issue during the render queue recording.
We were experimenting with different settings and found the following WEIRD behavior:
Setting the “Compression Quality” higher than 90% starts rendering the nested videos at higher speeds.
Using AA settings in the Render Queue - also leads to speed up in videos playback. Also, in this case, if rendering to images - UE spits out all the extra samples per frame. So one doesn’t get an image per frame, but X images per frame where X is number of AA samples. I have no idea if it is done intentionally, or it’s a bug.

32

Is this fixed? I’ve been struggling since this morning trying to fix this. It’s hard to be creative when you need to troubleshoot just how to render your sequence. Epic!!!

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33

Epic Games is on vacation till 12.07.
I am also going to raise this issue on the UDN forums. The staff responds there more frequently.

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34

thanks you very much Graeme, i cannot see the blueprint attached, where do i find it?

35

Same problem here with Unreal Editor 4.27.2-18319896+++UE4+Release-4.27 - exactly like Elleclouds described above with the video playing back much faster than it should be after a movie rendering using Level Sequencer.

I remember in Unity some years ago I had the same issue and it was possible to fix it using a 1 line C# script, so the render waits after each frame until it is written to disk.

Input, Intermediate/Render/Encoding and Output framerate do not match inside UE?
Best!

36

Guys ! Be patient and follow this steps it’s works !!! UE4 How to Render a Media Texture, Video, in Sequencer at Right Speed - YouTube

37

I’m also having this issue.

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Did you try rendering only using Spatial AA rather than temporal? Typically I render 1 spatial but 8x temporal, but I noticed that causes certain game logic to run at 8x speed. This fixes speed up issues for me if I use 8x spatial 1x temporal.

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39

Hey guys, so i also had this issue and none of the suggested method worked for me. I fixed the issue going into the project settings, searching ‘‘FPS’’ then under Engine - Level Sequence, adjusting the Default Tick Resolution from 24000 to 30000 to match my 30 fps. Hope it help!

40

I ended up creating a level blueprint to play the sequence with a keystroke Unreal Play Level Sequence with Keystroke - YouTube (except I used a Play node instead of a Play To, which plays the sequence in reverse).

Then I play the game preview in the editor, hit F11 to go to full screen mode, hit a key to start the level sequence, then capture the screen with OBS.

1 Like