HD MKV Playback is slightly jerky

**judgeschambers** · September 20th, 2010, 04:45 PM

Originally Posted by pettern

There seems to be an issue with the "Use hardware assisted.. " setting. Turn it off, then select manual settings if you're on Linux. I assume it's the same on Windows, but worth testing. That fixed it for me.

Again, not that cut and dry. HD MKV files must, must be encoded to H264.mkv to accelerate.

Regardless of turning off hardware acceleration in boxee settings.

**pettern** · September 20th, 2010, 08:04 PM

Well, it fixed it for me, that's a certainty.

**pettern** · September 22nd, 2010, 09:15 PM

..but many other videos (x264 encoded) will not play with hw acceleration. They do play fine in XBMC 10, so I guess Boxee has a bit to go to replace XBMC. Is Boxee still on the previous release of XBMC?

**judgeschambers** · September 22nd, 2010, 10:21 PM

Originally Posted by pettern

..but many other videos (x264 encoded) will not play with hw acceleration. They do play fine in XBMC 10, so I guess Boxee has a bit to go to replace XBMC. Is Boxee still on the previous release of XBMC?

I'm not sure what you mean as Boxee is designed to play H264 .mp4 and now h264 mkv. Everything I have plays just fine in Boxee.

As far a based on XBMC:
No, boxee's foundation is XBMC based, but is now a completely different program altogether. Inner workings are not even close.

**pettern** · September 23rd, 2010, 06:26 AM

Originally Posted by judgeschambers

I'm not sure what you mean as Boxee is designed to play H264 .mp4 and now h264 mkv. Everything I have plays just fine in Boxee.

Well, not here. Some work, some don't.

Originally Posted by judgeschambers

As far a based on XBMC:
No, boxee's foundation is XBMC based, but is now a completely different program altogether. Inner workings are not even close.

Yes, you have made these seemingly incorrect claims before, and from the other comments, they didn't seem to be more correct in http://forums.boxee.tv/showthread.php?p=108603 than they are here.

**hatrickwah** · September 23rd, 2010, 10:04 PM

I have been having a similar issue to many here, however mine is limited to 1080p .MKV files. Normally these same files play perfectly fine in Windows Media Player and Media Player Classic. I know it isn't the computer since the hardware can certainly handle the format and the I'm also using Core Codec for video decoding. Any ideas would be appreciated, I've tried the system with and without hardware acceleration enabled.

System Specs:
AMD Athlon 64 X2 5050e Brisbane 2.6GHz
4 gbs 1066mhz DDR2 Memory
Onboard AMD 780g chipset = Radeon 3200 graphics card

**siksik6** · October 3rd, 2010, 02:53 AM

I tried a few MKVs on the Acer Revo r610 yesterday.

They're definitely using hardware accelation, because if I disable it, they stutter like crazy.

With HW accel, they play *almost* perfectly, but with a couple of noticeable dropped frames during fast moving scenes.

This is 720p or 1080p content.

Even outside of Boxee, with media player classic and the covreavc codec, this problem exists.

All of these MKVs play perfectly on my WDTVLive box.

Going to return the R610 if I can't fix this issue, which is a shame, because I love boxee!

*I should also mention the CPU usage when playing these files is low, below 30% from memory, so I don't think this is a CPU issue.. *

**siksik6** · October 3rd, 2010, 09:08 AM

I think I *MIGHT* have figured this out!

I had Macdrive running as I had a mac formatted disk attached. I had tried running the MKV from the Windows drive, and even disabling Macdrive, but it seems after uninstalling it completely, it's playing back flawlessly!

Need to check with a big 1080p film, but fingers crossed!