Safe Synchronization

[hdickings]

Hello, thank you for creating such an amazing piece of software. I was wondering whether someone could tell me if there is a reason to not have Safe Synchronization enabled, as I have noticed some de-synchronization occurring in some of my media and I'm about to enable the option "Use safe synchronization (--sync) when splitting MKV tracks." to see if it remedies the issue.

[hdickings]

I enabled the feature and converted the media again, and it made no difference. I've included the MKV information in this post should anyone be interested in pursuing a solution to the problem.

Code:

+ EBML head
|+ Doc type: matroska
|+ Doc type version: 2
|+ Doc type read version: 2
+ Segment, size 1565474739
|+ Seek head (subentries will be skipped)
|+ EbmlVoid (size: 4044)
|+ Segment information
| + Timecode scale: 1000000
| + Muxing application: libebml v0.7.7 + libmatroska v0.8.1
| + Writing application: mkvmerge v2.9.7 ('Tenderness') built on Jul  1 2009 18:43:35
| + Duration: 3510.120s (00:58:30.120000000)
| + Date: Mon Oct 12 22:24:37 2009 UTC
| + Segment UID: 0xb5 0xc7 0xac 0x24 0x78 0x2b 0x59 0x2d 0xb1 0x64 0xc4 0x06 0x09 0x56 0x08 0xae
|+ Segment tracks
| + A track
|  + Track number: 1
|  + Track UID: 323682742
|  + Track type: video
|  + Enabled: 1
|  + Default flag: 1
|  + Forced flag: 0
|  + Lacing flag: 0
|  + MinCache: 1
|  + Timecode scale: 1.000000
|  + Max BlockAddition ID: 0
|  + Codec ID: V_MPEG4/ISO/AVC
|  + Codec decode all: 1
|  + CodecPrivate, length 42
|  + Default duration: 40.000ms (25.000 fps for a video track)
|  + Language: und
|  + Video track
|   + Pixel width: 1280
|   + Pixel height: 720
|   + Interlaced: 0
|   + Display width: 1280
|   + Display height: 720
| + A track
|  + Track number: 2
|  + Track UID: 1698652092
|  + Track type: audio
|  + Enabled: 1
|  + Default flag: 1
|  + Forced flag: 0
|  + Lacing flag: 1
|  + MinCache: 0
|  + Timecode scale: 1.000000
|  + Max BlockAddition ID: 0
|  + Codec ID: A_AC3
|  + Codec decode all: 1
|  + Default duration: 32.000ms (31.250 fps for a video track)
|  + Language: und
|  + Audio track
|   + Sampling frequency: 48000.000000
|   + Channels: 6
|+ EbmlVoid (size: 1024)
|+ Cluster

[war59312]

See http://xenonmkv.ev98.net/forum/index.php/topic,164.0.html

You need to make sure in your logfile that it is using 31.250 fps for mp4box. I would bet its not.

And if its not then you have to manually do it yourself. Just copy and paste the commands from the log file into a cmd window with correct paths of course. And change the -fps to the correct value.

[hdickings]

It doesn't seem to include what FPS it's using in the log window.

[war59312]

It shows you in the log file not in the log window.

First you have to check "Log all tool output" on bottom left corner.

Then open log.txt which is created in the same directory you have XenonMKV.

Your looking for something in log.txt that looks something like this:

[3/7/2010 12:19 PM] [W]C:\Users\Will\Desktop\XboX\XenonMKV\tools\mp4box\MP4Box_default.exe "D:\XBOX\output.mp4" -add video.h264 -fps 24.24 -par 1=1:1 -add audio.m4a -tmp "D:\XBOX" -itags name="The.Cove.2009.PROPER.1080p.BluRay.x264-CiNEFiLE-1"
[3/7/2010 12:19 PM] [W]Generating MP4 file from x264 video and 2-channel AAC.
[3/7/2010 12:19 PM] [W]Using mp4box version 0.4.6-dev (default, February 2009) to generate file.

See the -fps in red? See how it says 24.24? That should be 24.000. So I had to manually run MP4BOX to create the file using the correct FPS.

Meaning, I simply had to open a cmd window and ran:

C:\Users\Will\Desktop\XboX\XenonMKV\tools\mp4box\MP4Box_default.exe "D:\XBOX\output.mp4" -add D:\XBOX\video.h264 -fps 24.000 -par 1=1:1 -add D:\XBOX\audio.m4a -tmp "D:\XBOX" -itags name="The.Cove.2009.PROPER.1080p.BluRay.x264-CiNEFiLE-1"

So all I changed was fps and added the full path to video.h264 and audio.m4a .

NOTE: Make sure Tools > Delete Temporary Files is not enabled.

Of course if the original file is over 4096MB then you will need to do this for all parts that XenonMKV created.

BTW you really should update the MKVToolnix files that come with XenonMKV from:

http://www.bunkus.org/videotools/mkvtoolnix/

Lot's of bugs have been fixed since version 2.9.7 that you're using.

Just download the installer and let it install. Then go to the directory it installed the files to and copy them all to your XenonMKV, over-ridding the old ones.

[hdickings]

Thanks for the advice, I'll let you know if it has any effect. I can't say I'm too eager to go so far out of my way to get it working, and I'm guessing this would be on a per-file-basis, so I'd rather wait for a newer revision of the XenonMKV application -- not that I'm stamping my feet insisting I get something handed to me.