Handbrake and Snow Leopard

[cruelmemory]

just wondering if this is an isolated issue or if anyone else has run into this problem.

System setup:
- MacBookPro5,1 (2.4 GHz, 4GB RAM)
- NVIDIA GeForce 9600M GT turned on
- Upgraded from 10.5.8 to 10.6
- 64-bit kernel turned on
- Latest build of Handbrake installed

I started re-encoding a video (2-pass; turbo first past) in handbrake. Everything was going fine until it got partway through the second pass. Then I got a black screen and mouse cursor. The system was still on and functioning. I did a remote login from my 13" unibody MacBook via screen sharing. The system was still running just fine. Via screen sharing, I could continue working. I changed the screen resolution on the MBP and got my video back for a few minutes before I lost it again.

I retried this using 32-bit kernel and the 9400M GPU but the only change was that I lost the display twice as fast.

The only thing that I could think of would be a result of OpenCL.

The nature of Handbrake is to take a video file, use every last bit of your CPU power and give you a new video clip in another format about an hour later.

This may or may not be the case, but OpenCL uses the available GPU for excess CPU tasks. Is Handbrake taking all of the CPU and then trying to take as much of the GPU as possible or is there something just wrong with my computer?

 

[SimonJ]

I don't believe it works that way. OpenCL is something the developers have to include in their apps, it's not a system-wide "always on" thing.

That being said, I am sorry I don't know why you're getting those issues.

 

[Back2Bedlam]



 

[Guiyon]

I've been using Handbrake on Snow Leopard for the last few days with no problems. As for any potential OpenCL issues, Handbrake doesn't use it.

 

[chrisandersen]

Handbrake 0.9.3 crashes as soon as you pick a file or cancel. Everytime.
Process: HandBrake [1941]
Path: /Applications/HandBrake.app/Contents/MacOS/HandBrake
Identifier: org.m0k.handbrake
Version: 0.9.3 (2008112300)
Code Type: X86 (Native)
Parent Process: launchd [110]

Date/Time: 2009-09-03 08:45:28.131 -0500
OS Version: Mac OS X 10.6 (10A432)
Report Version: 6

Interval Since Last Report: 16872 sec
Crashes Since Last Report: 7
Per-App Interval Since Last Report: 100 sec
Per-App Crashes Since Last Report: 5
Anonymous UUID: 6610F299-8ACD-4CDF-A035-4BA7BDA05E7B

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000f5249589
Crashed Thread: 0 Dispatch queue: com.apple.main-thread

 

[cruelmemory]

I don't believe it works that way. OpenCL is something the developers have to include in their apps, it's not a system-wide "always on" thing.

That being said, I am sorry I don't know why you're getting those issues.

See, I had a feeling that it would have had to be turned on. perhaps a run of AHT is in order...

I just did a re-install of SL... lemme try it now...

 

[djellison]

Everything was going fine until it got partway through the second pass. Then I got a black screen and mouse cursor. The system was still on and functioning.

Exactly the same thing here. I've had the black screen three times - and every time has been whilst using Handbrake. It has happened at no other time.

This is nothing to do OpenCL etc - I think it's just that HB needs a new build for SL.

 

[CWallace]

I've been doing plenty of DVD conversions with Handbrake under SL on a MBP4,1 with 4GB of RAM and it's been working perfectly.

 

[libellus]

Handbrake crashes every time...

I don't know why, but ever since I installed Snow Leopard, I can't even open Handbrake. Every time I click on the app it opens... and closes. Frustrating!

 

[CWallace]

Are you using the latest version (0.9.3, I believe?).

Perhaps remove it and reinstall?

 

[darkpaw]

You could try downloading the source code and building it yourself. The steps are really very easy - just a few Terminal commands.

I did this yesterday with svn 2806 and Handbrake is working perfectly for me.

http://trac.handbrake.fr/wiki/CompileGuide

 

[cruelmemory]

By default, SL performs an Archive and install to ensure proper reinstall and functionality. I reinstalled the OS and HB and trashed the plist files. Still has the same result. Luckily I can still access the machine via Screen Sharing on my other computer.

Still annoying. I'll try a source build of HB once this next encode finishes...

 

[alphaod]

I'm curious to know where are some of you folks finding that Handbrake uses OpenCL?

 

[ppcaric]

Exactly the same problem here, running a brand newly downloaded and installed Handbrake on an iMac, 24" 3.06GHz Intel Core 2 Duo, 4 GB RAM, OS X 10.6.2.
Black screen during conversion. Remote accessing from my MacBookPro everything's fine, just it doesn't show on screen
BTW: if you change the screen resolution when the screen is black, via the remote connection, the screen will resuscitate also on the iMac. But the solution is just temporary. Few seconds later, it will turn black again. You can repeat this as many times as you like.
Looks like HB performs something on the video card but doesn't refresh afterwhile (or something like that, I'm not into mac programming unfortunately).

Strange thing. The same DOES NOT happen running the same HB on the same OS 10.6.2 on my MacBookPro. It really looks like something hardware (video card maybe) related... Hope this can help the HB staff with the debugging process.

 

[MacManiac777]

Just a thought, when the screen goes blank press control + shift + eject then move the mouse pointer to see if your screen turns back on.

I used to use this to refresh my display when it got a series of dark and light bands of light through it. Doings so would bring the display back to normal.