JPEXS Free Flash Decompiler Issue Tracker

If you are looking for the decompiler itself, visit

NEW : We have got a new blog where we post some interesting SWF internals info.

List of issuesList of issues

#1893 Sprites are not shown (DefineVideoStream placeholder is shown instead)
Author: user tiga
Date created:
Type: bug
Visibility: Everybody
Assigned to:
Labels: Video
State: returned Help

> What steps will reproduce the problem? Open the attached SWF file and navigate to the 'sprites' folder. > What is the expected output? What do you see instead? Expected: I can see the sprites of the SWF. But instead I just see the 'DefineVideoStream' placeholder. The video streams however work fine. > What version of the product are you using? Is it "nightly build"? Which operating system do you have? 17.0.2 > Please provide any additional information below. If the problem is related to a SWF file, attach it here, otherwise we can't help you.
Downloadtest.swf (123 KiB)
Yes, DefineVideoStream is unsupported for display. We cannot properly decode video frames, sorry. You can display video in Flashplayer projector.
State: new→opened
Ah okay, good to know. I thought it was a bug, since it shows perfectly that there are 40 frames, but not the content. The export however works fine (as flv) so this is not a big problem. Thanks!
Good news! In nightly 2306, you can properly display frames with video and DefineVideoStream tag right in the FFDec. Only thing you need is VLC media player installed.
State: opened→upgraded
Thanks! Cool feature and it works. I just noticed that the video stream/sprites look cut off. When exporting the video as .flv, everything looks normal.
Downloadbb.PNG (271 KiB)
Could you please attach the SWF file you are talking about?
State: upgraded→returned