playing 60 fps mkv on ATV2?

redgrandam · 2011-06-21 16:46

Sorry if this is already posted, but I couldn't find anything.

I'm having issues playing some recent MKV's. (specifically recent episodes of Conan, The Daily Show, and Colbert Report), and I've found that these are coded in 60 fps instead of 30 fps. I've had to either download SD formats when available, or convert with handbreak to an m4v at 29.97 to get them to play. The audio plays fine but the video is way out of sync on the original mkv files.

The videos play perfect on my PBO, but not always on my desktop mac running XBMC as well.

Any solutions for the ATV2 to play these right? I've played with all the settings I can think of as well as connected the ATV2 direct to my router instead of wifi...

redgrandam · 2011-06-23 19:31

Sorry to bump, but anyone else here on an ATV2 with XBMC play 60fps 720p mkv files with or without success?

**Ned Scott** · 2011-06-23 23:07

redgrandam Wrote:Sorry to bump, but anyone else here on an ATV2 with XBMC play 60fps 720p mkv files with or without success?

There's at least three major builds of XBMC for ATV2/iOS floating around here, there are several possible combinations of media types and data rates and such for the movies you are trying to play, and so much more information. If you don't tell us what version you are using, what the media info is on the files, and most importantly a log file, we can't help you. We don't have enough information to help you.

http://forum.xbmc.org/showthread.php?tid=92480

Read that, follow it's instructions and advice, and then we might be able to move forward with this.

redgrandam · 2011-06-24 01:02

My Apologies! I was just probing to see 'if' this was a wide spread problem, I wasn't going to worry about it too fast, but seems it isn't, so I'll follow those directions the best I can, thanks Smile

Here is my XBMC log file for trying to play 'The.Daily.Show.with.Jon.Stewart.2011.06.21.Cameron.Diaz.HD.TV.mkv'

http://pastebin.com/8LHpDcfn

The media file info that VLC gives me is:
Codec: H264 MPEG-4 AVC
Resolution:1280x720
Frame Rate:59.941256

A52 Audio
Stereo
48000Hz
384 kb/s

This isn on ATV2, Build 20110515-8b3a9fc
AFAIK it's the official XBMC release
Installed by SSH @ copied

All other media files I've tried to play so far (including mkv files) have played great. It just seems to be these 60fps ones. I have audio sync turned on, and have tried all the different sync options, and none seemed to help.

Sometimes the unit tries to re-sync the audio, but often just the audio seems to play fine for a while, but the video is lagging behind from the start, and the video is not super smooth, but is playing.

I have it connected via wifi, but I've tried running a cable direct to it and it didn't help, same results. My Patriot Box Office is connected via wifi as well, and has no problem playing the file at 60fps.

One other note, I tried playing the file on my Mac Mini. It plays fine in VLC, but I tried on XBMC on here too and I get like digital static in the computer speakers, no show audio, while the video is playing. Not sure why on that either, but I don't really use XBMC on my Mac much, just the ATV2, so I'm not too concerned this second. Usually XBMC plays stuff fine on the mini though.

Please let me know if I've missed any information, I think I got it all . Smile

Thanks

redgrandam · 2011-06-25 23:38

I hate to bump again, but I'm still stuck on this. Anyone have any ideas?

**Ned Scott** · 2011-06-26 01:09

Unfortunately have no advice, but I can confirm the problem. Lots of sync issues and buffering.

iPhone 4 running iOS 4.2.6
XBMC 10.0-9: PRE-11.0 Git:20110623-62171b3 (Compiled: Jun 23 2011)
played over wireless-n and SMB share with a Macbook pro.

Media is the same specs as redgrandam (I think I found the same file) but here's the media info anyways:

Code:

Format                           : Matroska

File size                        : 451 MiB

Duration                         : 21mn 6s

Overall bit rate                 : 2 989 Kbps

Encoded date                     : UTC 2011-06-22 05:12:56

Writing application              : mkvmerge v4.0.0 ('The Stars were mine') built on Jun  5 2010 14:31:43

Writing library                  : libebml v1.0.0 + libmatroska v1.0.0

Video

ID                               : 1

Format                           : AVC

Format/Info                      : Advanced Video Codec

Format profile                   : High@L4.1

Format settings, CABAC           : Yes

Format settings, ReFrames        : 5 frames

Format settings, GOP             : M=4, N=20

Codec ID                         : V_MPEG4/ISO/AVC

Duration                         : 21mn 6s

Bit rate                         : 2 545 Kbps

Width                            : 1 280 pixels

Height                           : 720 pixels

Display aspect ratio             : 16:9

Frame rate                       : 59.940 fps

Color space                      : YUV

Chroma subsampling               : 4:2:0

Bit depth                        : 8 bits

Scan type                        : Progressive

Bits/(Pixel*Frame)               : 0.046

Stream size                      : 384 MiB (85%)

Writing library                  : x264 core 115 r2008 4c552d8

Encoding settings                : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=14 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=300 / keyint_min=30 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

Language                         : English

Audio

ID                               : 2

Format                           : AC-3

Format/Info                      : Audio Coding 3

Mode extension                   : CM (complete main)

Codec ID                         : A_AC3

Duration                         : 21mn 6s

Bit rate mode                    : Constant

Bit rate                         : 384 Kbps

Channel(s)                       : 2 channels

Channel positions                : Front: L R

Sampling rate                    : 48.0 KHz

Bit depth                        : 16 bits

Compression mode                 : Lossy

Stream size                      : 58.0 MiB (13%)

XBMC log: http://pastebin.com/G0gck9GY

I will upload a sample of the video file in a bit

**SandmanCL** · 2011-06-26 06:15

I'm pretty sure the answer to your problem is that the ATV2 does not have the processing power to properly play back 720p video at 60 fps.

*edited to make the "please be more specific"-police happy ;-)

**davilla** · 2011-06-26 06:33

SandmanCL Wrote:I'm pretty sure the answer to your problem is that the ATV2 does not have the processing power to properly play back video at 60 fps.

please be more specific with statements like this , 60 fps at what video res. I'm pretty sure I can do 60 fps @ 320x270 Smile

redgrandam · 2011-06-26 14:58

SandmanCL Wrote:I'm pretty sure the answer to your problem is that the ATV2 does not have the processing power to properly play back video at 60 fps.

That's what I'm wondering, but if true then this should be a common problem here.

**SandmanCL** · 2011-06-26 16:46

I just looked through your debug log again.
Processing power aside, there may be a media detection bug that plays role here as well. Beginning on line 922:

Code:

18:34:21 T:195813376 M: 97816576   DEBUG: ReadEditDecisionLists - Assuming NTSC or 60i interlaced content. Adjusted frames per second from 59.940 (~59.940 fps) to 29.970

Further down in the log, though, (line 956) a few different refresh rates are mentioned, first a debug line saying the detected refreshrate is 29.99 hertz and then a notice line sating 59.94 fps.

Code:

34:22 T:1059943564 M: 79921152   DEBUG: CVideoReferenceClock: Detected refreshrate: 29.995801 hertz, rounding to 30 hertz

34:22 T:195813376 M: 79921152   DEBUG: CDVDPlayer::HandleMessages - player started 1

34:22 T:209805312 M: 78053376   DEBUG: ------ Window Deinit (DialogBusy.xml) ------

34:22 T:1059943564 M: 76959744   DEBUG: CVideoReferenceClock: Detected refreshrate: 42.281361 hertz, rounding to 42 hertz

34:22 T:201007104 M: 77336576   DEBUG: GetPicture - VTBDecoderDecode dts(-4503599627370496.000000), pts(-4503599627370496.000000), old_pts(0.000000)

34:22 T:201007104 M: 77336576  NOTICE:  fps: 59.940060, pwidth: 1280, pheight: 720, dwidth: 1280, dheight: 720

redgrandam Junior Member Posts: 12 Joined: Jun 2011 Reputation: 0	2011-06-23 19:31 Post: #2 Sorry to bump, but anyone else here on an ATV2 with XBMC play 60fps 720p mkv files with or without success?
	find

redgrandam Junior Member Posts: 12 Joined: Jun 2011 Reputation: 0	2011-06-25 23:38 Post: #5 I hate to bump again, but I'm still stuck on this. Anyone have any ideas?
	find

SandmanCL Multi-platform XBMC fan Posts: 572 Joined: Jul 2004 Reputation: 1 Location: San Francisco, CA	2011-06-26 06:15 Post: #7 I'm pretty sure the answer to your problem is that the ATV2 does not have the processing power to properly play back 720p video at 60 fps. *edited to make the "please be more specific"-police happy ;-) (This post was last modified: 2011-06-26 16:38 by SandmanCL.)
	find

redgrandam Junior Member Posts: 12 Joined: Jun 2011 Reputation: 0	2011-06-26 14:58 Post: #9 SandmanCL Wrote:I'm pretty sure the answer to your problem is that the ATV2 does not have the processing power to properly play back video at 60 fps. That's what I'm wondering, but if true then this should be a common problem here.
	find