.mkv Thumb

[cyb3rgh05t]

Hey , i don't know if this is just related to me but all my .avi files are working correctly with QL in finder, i get a nice preview picture, but for .mkv files i just get the mkv thumb in finder and in GetInfo.
i am using a MacPro late 2013 running Yosemite 10.10.

thanks for any help :)

[Marginal]

If you have not already done so, please log out and back in again or restart Finder (ctrl-alt-click on the Finder dock icon and choose Relaunch) since Finder may be caching the document icons.

Otherwise, to help diagnose the problem please run the Terminal app (in Applications -> Utilities) and type:
qlmanage -m
qlmanage -t -d1 /path/of/some/matroska/file.mkv
but substitute the path of some Matroska file by dragging a file from the Finder and dropping it on the Terminal window.
Then select all, copy, and paste the results here.

[cyb3rgh05t]

thx for the help:)

Here are my results:

Last login: Tue Nov 11 18:59:44 on ttys001
CyberGhost:~ CyberGhost$ qlmanage -m
server: living for 82s (7 requests handled) - instant off: yes - arch: X86_64 - user id: 501
memory used: 1 MB (1423024 bytes) - used descriptors: 21/256
last burst: during 2.542s - 7 requests - 2.306s idle
plugins:
org.videolan.avi -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.keynote.sffkth -> /Library/QuickLook/iWork.qlgenerator (72)
com.microsoft.powerpoint.pot -> /System/Library/QuickLook/Office.qlgenerator (32)
org.videolan.wmv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.ogg-video -> /Library/QuickLook/Video.qlgenerator (1.6.0)
io.mpv.divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.audio -> /System/Library/QuickLook/Audio.qlgenerator (675)
com.apple.iwork.pages.sfftemplate -> /Library/QuickLook/iWork.qlgenerator (72)
org.xiph.ogv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.macblurayplayer.nuppelvideo -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.flc-animation -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.vmware.foreign.pvm -> /Applications/VMware Fusion.app/Contents/Library/QuickLook/VMware Fusion QuickLook.qlgenerator (2075534)
org.smpte.gxf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.asf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.planbnet.nfo -> /Applications/QuickNFO.app/Contents/Library/QuickLook/QuickNFO.qlgenerator (1.1)
com.adobe.illustrator.ai-image -> /System/Library/QuickLook/EPS.qlgenerator (675)
io.mpv.rmvb -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.plain-text -> /System/Library/QuickLook/Text.qlgenerator (675)
public.x509-printable-encoded-archive -> /System/Library/QuickLook/Security.qlgenerator (55058)
com.vmware.foreign.vhd -> /Applications/VMware Fusion.app/Contents/Library/QuickLook/VMware Fusion QuickLook.qlgenerator (2075534)
public.movie -> /System/Library/QuickLook/Movie.qlgenerator (675 - loaded)
com.real.realvideo -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.keynote.key -> /Library/QuickLook/iWork.qlgenerator (72)
com.apple.ical.bookmark -> /System/Library/QuickLook/iCal.qlgenerator (675)
org.niltsh.mplayerx-xvid -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.rsa.pkcs-12 -> /System/Library/QuickLook/Security.qlgenerator (55058)
com.apple.keychain -> /System/Library/QuickLook/Security.qlgenerator (55058)
public.dv-movie -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.avi -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.vmware.foreign.pvs -> /Applications/VMware Fusion.app/Contents/Library/QuickLook/VMware Fusion QuickLook.qlgenerator (2075534)
org.videolan.mxf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.realmedia -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.mkv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.numbers.sffnumbers -> /Library/QuickLook/iWork.qlgenerator (72)
public.3d-content -> /System/Library/QuickLook/SceneKit.qlgenerator (260.7)
com.apple.notes.externalrecord -> /System/Library/QuickLook/Notes.qlgenerator (346.1)
org.openxmlformats.spreadsheetml.sheet -> /System/Library/QuickLook/Office.qlgenerator (32)
com.real.realmedia-vbr -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.ibooksauthor.book -> /Library/QuickLook/iBooksAuthor.qlgenerator (1.0)
org.videolan.rec -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.x509-certificate -> /System/Library/QuickLook/Security.qlgenerator (55058)
com.apple.ichat.ichat -> /System/Library/QuickLook/iChat.qlgenerator (4725)
com.apple.iwork.numbers.numbers-tef -> /Library/QuickLook/iWork.qlgenerator (72)
com.apple.localized-pdf-bundle -> /System/Library/QuickLook/LocPDF.qlgenerator (675)
com.adobe.encapsulated-postscript -> /System/Library/QuickLook/EPS.qlgenerator (675)
com.apple.mail.emlx -> /System/Library/QuickLook/Mail.qlgenerator (1990.1)
com.apple.ical.bookmark.todo -> /System/Library/QuickLook/iCal.qlgenerator (675)
org.videolan.nsv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.ical.ics.event -> /System/Library/QuickLook/iCal.qlgenerator (675)
public.xhtml -> /System/Library/QuickLook/Web.qlgenerator (675)
org.niltsh.mplayerx-flash-video -> /Library/QuickLook/Video.qlgenerator (1.6.0)
io.mpv.ogv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.bittorrent.bittorrentpartfile -> /Applications/uTorrent.app/Contents/Library/QuickLook/QuickLookPlugin.qlgenerator (1.0)
com.apple.property-list -> /System/Library/QuickLook/Text.qlgenerator (675)
com.microsoft.excel.xlt -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.iwork.keynote.sffkey -> /Library/QuickLook/iWork.qlgenerator (72)
com.apple.iconset -> /System/Library/QuickLook/Icon.qlgenerator (675)
com.microsoft.wtv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.nuv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.openxmlformats.spreadsheetml.template -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.pict -> /System/Library/QuickLook/Clippings.qlgenerator (675)
public.vcard -> /System/Library/QuickLook/Contact.qlgenerator (675)
com.adobe.pdf -> /System/Library/QuickLook/PDF.qlgenerator (675)
com.google.webm -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.tod -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.niltsh.mplayerx-mxf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
io.mpv.flv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.flash -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.vmware.foreign.vpc7 -> /Applications/VMware Fusion.app/Contents/Library/QuickLook/VMware Fusion QuickLook.qlgenerator (2075534)
org.gimp.xjt -> /Applications/Gimp.app/Contents/Library/QuickLook/xcf_quicklook.qlgenerator (1.0.0)
public.rtf -> /System/Library/QuickLook/Text.qlgenerator (675)
com.apple.iwork.pages.pages-tef -> /Library/QuickLook/iWork.qlgenerator (72)
com.apple.package -> /System/Library/QuickLook/Package.qlgenerator (675)
com.microsoft.windows-media-wmv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.microsoft.word.stationery -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.iwork.pages.sffpages -> /Library/QuickLook/iWork.qlgenerator (72)
com.microsoft.xesc -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.keynote.key-tef -> /Library/QuickLook/iWork.qlgenerator (72)
org.openxmlformats.presentationml.slideshow -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.addressbook.person -> /System/Library/QuickLook/Contact.qlgenerator (675)
org.matroska.mkv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.numbers.sfftemplate -> /Library/QuickLook/iWork.qlgenerator (72)
org.openxmlformats.presentationml.presentation.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.webarchive -> /System/Library/QuickLook/Web.qlgenerator (675)
org.gimp.xcf -> /Applications/Gimp.app/Contents/Library/QuickLook/xcf_quicklook.qlgenerator (1.0.0)
io.mpv.mkv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.massanti.mediainfomac.matroska -> /System/Library/QuickLook/Movie.qlgenerator (675 - loaded)
com.apple.safari.history -> /System/Library/QuickLook/Bookmark.qlgenerator (675)
org.niltsh.mplayerx-divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
io.mpv.dv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.keynote.key -> /Library/QuickLook/iWork.qlgenerator (72)
public.comma-separated-values-text -> /System/Library/QuickLook/Office.qlgenerator (32)
org.openxmlformats.wordprocessingml.template.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
org.videolan.axv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.systempreference.prefpane -> /System/Library/QuickLook/StandardBundles.qlgenerator (675)
org.niltsh.mplayerx-dv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.ichat.transcript -> /System/Library/QuickLook/iChat.qlgenerator (4725)
com.apple.addressbook.group -> /System/Library/QuickLook/Contact.qlgenerator (675)
io.mpv.avi -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.openxmlformats.wordprocessingml.document -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.iwork.pages.pages -> /Library/QuickLook/iWork.qlgenerator (72)
org.smpte.mxf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.iwork.keynote.kth -> /Library/QuickLook/iWork.qlgenerator (72)
org.openxmlformats.wordprocessingml.template -> /System/Library/QuickLook/Office.qlgenerator (32)
org.videolan.xesc -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.internet-location -> /System/Library/QuickLook/Clippings.qlgenerator (675)
com.apple.iwork.numbers.numbers -> /Library/QuickLook/iWork.qlgenerator (72)
com.divx.divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
dyn.ah62d4rv4ge81a65eta -> /Library/QuickLook/CC_QL.qlgenerator (1.0)
org.videolan.wtv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.ical.ics -> /System/Library/QuickLook/iCal.qlgenerator (675)
org.openxmlformats.presentationml.template.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
org.videolan.3gp -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.quicktime-movie -> /Library/QuickLook/Video.qlgenerator (1.6.0)
indy.jt.niceplayer.mkv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.dv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.image -> /System/Library/QuickLook/Image.qlgenerator (675)
org.bittorrent.torrent -> /Applications/uTorrent.app/Contents/Library/QuickLook/QuickLookPlugin.qlgenerator (1.0)
com.apple.mail.email -> /System/Library/QuickLook/Mail.qlgenerator (1990.1)
org.openxmlformats.presentationml.slideshow.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.iwork.numbers.template -> /Library/QuickLook/iWork.qlgenerator (72)
com.microsoft.word.doc -> /System/Library/QuickLook/Office.qlgenerator (32)
com.apple.ical.ics.todo -> /System/Library/QuickLook/iCal.qlgenerator (675)
com.apple.safari.bookmark -> /System/Library/QuickLook/Bookmark.qlgenerator (675)
indy.jt.niceplayer.divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.microsoft.powerpoint.ppt -> /System/Library/QuickLook/Office.qlgenerator (32)
org.niltsh.mplayerx-ogg-video -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.vmware.vm-package -> /Applications/VMware Fusion.app/Contents/Library/QuickLook/VMware Fusion QuickLook.qlgenerator (2075534)
com.microsoft.advanced-systems-format -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.finder.pictclipping -> /System/Library/QuickLook/Clippings.qlgenerator (675)
org.videolan.divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
public.font -> /System/Library/QuickLook/Font.qlgenerator (675)
org.oasis-open.opendocument.text -> /System/Library/QuickLook/Text.qlgenerator (675)
public.html -> /System/Library/QuickLook/Web.qlgenerator (675)
org.openxmlformats.presentationml.presentation -> /System/Library/QuickLook/Office.qlgenerator (32)
public.xml -> /System/Library/QuickLook/Text.qlgenerator (675)
org.webmproject.webm -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.openxmlformats.spreadsheetml.sheet.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
org.openxmlformats.spreadsheetml.template.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
org.niltsh.mplayerx-matroska-video -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.niltsh.mplayerx-rmvb -> /Library/QuickLook/Video.qlgenerator (1.6.0)
dyn.ah62d4rv4ge80w3dfqe -> /Library/QuickLook/CC_QL.qlgenerator (1.0)
com.apple.application -> /System/Library/QuickLook/StandardBundles.qlgenerator (675)
org.openxmlformats.presentationml.template -> /System/Library/QuickLook/Office.qlgenerator (32)
io.mpv.xvid -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.rtfd -> /System/Library/QuickLook/Text.qlgenerator (675)
com.microsoft.powerpoint.pps -> /System/Library/QuickLook/Office.qlgenerator (32)
org.mythtv.nuppelvideo -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.microsoft.excel.xls -> /System/Library/QuickLook/Office.qlgenerator (32)
public.svg-image -> /System/Library/QuickLook/Web.qlgenerator (675)
com.real.realmedia -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.adobe.flash.video -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.gxf -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.videolan.vro -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.macblurayplayer.matroska -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.openxmlformats.wordprocessingml.document.macroenabled -> /System/Library/QuickLook/Office.qlgenerator (32)
com.microsoft.word.dot -> /System/Library/QuickLook/Office.qlgenerator (32)
org.videolan.quicktime -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.macblurayplayer.divx -> /Library/QuickLook/Video.qlgenerator (1.6.0)
com.apple.finder.textclipping -> /System/Library/QuickLook/Clippings.qlgenerator (675)
com.apple.iwork.pages.template -> /Library/QuickLook/iWork.qlgenerator (72)
org.videolan.webm -> /Library/QuickLook/Video.qlgenerator (1.6.0)
io.mpv.wmv -> /Library/QuickLook/Video.qlgenerator (1.6.0)
org.bittorrent.utorrentpartfile -> /Applications/uTorrent.app/Contents/Library/QuickLook/QuickLookPlugin.qlgenerator (1.0)
com.macblurayplayer.ogv -> /Library/QuickLook/Video.qlgenerator (1.6.0)

CyberGhost:~ CyberGhost$ qlmanage -t -d1 /Volumes/LaCie/Downloads/Various\ Files/tvp-grimm-s03e14-480p.mkv
Testing Quick Look thumbnails with files:
/Volumes/LaCie/Downloads/Various Files/tvp-grimm-s03e14-480p.mkv
[DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-grimm-s03e14-480p.mkv (try #1)
2014-11-11 19:02:38.243 qlmanage[2161:932269] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0x3f3f, name = 'com.apple.tsm.portname'
See /usr/include/servers/bootstrap_defs.h for the error codes.
2014-11-11 19:02:38.244 qlmanage[2161:932269] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0x8627, name = 'com.apple.CFPasteboardClient'
See /usr/include/servers/bootstrap_defs.h for the error codes.
2014-11-11 19:02:38.244 qlmanage[2161:932269] Failed to allocate communication port for com.apple.CFPasteboardClient; this is likely due to sandbox restrictions
[DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-grimm-s03e14-480p.mkv. Content type UTI: com.massanti.mediainfomac.matroska. Generator used:
[DEBUG] Loading
[19:02:38.318] <<< FFR_Common >>> FigFormatReaderCreateForStreamReturningMatchingContainerLabelType: *** Could not find format reader for URL "file:///Volumes/LaCie/Downloads/Various%20Files/tvp-grimm-s03e14-480p.mkv" path "/Volumes/LaCie/Downloads/Various Files/tvp-grimm-s03e14-480p.mkv" extension "mkv" FileType '' MIMETYPE "(null)" SuggFileName "(null)" SuggNameExtension "(null)"
[19:02:38.318] FigFormatReaderCreateForStreamReturningMatchingContainerLabelType signalled err=-12847 (kFigFormatReaderError_FileNotRecognized) (Unrecognized content) at /SourceCache/CoreMedia/CoreMedia-1562.19/Prototypes/FormatHandlers/FigFormatReader_Common.c line 1867
[DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-grimm-s03e14-480p.mkv did not produce anything

• No thumbnail created for /Volumes/LaCie/Downloads/Various Files/tvp-grimm-s03e14-480p.mkv
  Done producing thumbnails
  CyberGhost:~ CyberGhost$ qlmanage -t -d1 /Volumes/LaCie/Downloads/Various\ Files/tvp-raydonovan-s02e05-480p.mkv
  Testing Quick Look thumbnails with files:
  /Volumes/LaCie/Downloads/Various Files/tvp-raydonovan-s02e05-480p.mkv
  [DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-raydonovan-s02e05-480p.mkv (try Anamorphic content not displayed correctly #1)
  2014-11-11 19:02:50.417 qlmanage[2162:932912] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0x805f, name = 'com.apple.tsm.portname'
  See /usr/include/servers/bootstrap_defs.h for the error codes.
  2014-11-11 19:02:50.418 qlmanage[2162:932912] *** CFMessagePort: bootstrap_register(): failed 1100 (0x44c) 'Permission denied', port = 0x8903, name = 'com.apple.CFPasteboardClient'
  See /usr/include/servers/bootstrap_defs.h for the error codes.
  2014-11-11 19:02:50.418 qlmanage[2162:932912] Failed to allocate communication port for com.apple.CFPasteboardClient; this is likely due to sandbox restrictions
  [DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-raydonovan-s02e05-480p.mkv. Content type UTI: com.massanti.mediainfomac.matroska. Generator used:
  [DEBUG] Loading
  [19:02:50.489] <<< FFR_Common >>> FigFormatReaderCreateForStreamReturningMatchingContainerLabelType: *** Could not find format reader for URL "file:///Volumes/LaCie/Downloads/Various%20Files/tvp-raydonovan-s02e05-480p.mkv" path "/Volumes/LaCie/Downloads/Various Files/tvp-raydonovan-s02e05-480p.mkv" extension "mkv" FileType '' MIMETYPE "(null)" SuggFileName "(null)" SuggNameExtension "(null)"
  [19:02:50.489] FigFormatReaderCreateForStreamReturningMatchingContainerLabelType signalled err=-12847 (kFigFormatReaderError_FileNotRecognized) (Unrecognized content) at /SourceCache/CoreMedia/CoreMedia-1562.19/Prototypes/FormatHandlers/FigFormatReader_Common.c line 1867
  [DEBUG] Thumbnailing file:///Volumes/LaCie/Downloads/Various%20Files/tvp-raydonovan-s02e05-480p.mkv did not produce anything
• No thumbnail created for /Volumes/LaCie/Downloads/Various Files/tvp-raydonovan-s02e05-480p.mkv
  Done producing thumbnails
  CyberGhost:~ CyberGhost$

thanks in advance :)

[Marginal]

Thanks. The "Media Inspector" app is grabbing the UTIs for MKVs and some other types.
Should be fixed in Release 1.61.

[cyb3rgh05t]

thanks :)