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MKV stuttering
Posted: 24 Mar 2014 14:28
by Shandyman
I'm using the latest VLC, on pretty much every MKV I watch, there's always a random freeze, sometimes only a couple in 40 minutes, sometimes more. I've tried changing the threads in the demuxers menu, i've tried changing the skip the loop filter, tried changing the hardware decoding from default to video decode acceleration framework. It's driving me potty!! I'm getting close to giving up on VLC and looking for an alternative bit of software.
Re: MKV stuttering
Posted: 25 Mar 2014 09:00
by dfuhrmann
A VLC log would be helpful, at the time your video freezes.
Re: MKV stuttering
Posted: 25 Mar 2014 11:00
by Shandyman
well it happened twice just 17 seconds in. Log as below.
Code: Select all
mkv debug: | | + Seek
mkv debug: | | + Seek
mkv debug: | - unknown seekhead reference at 787234178
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mkv debug: | - unknown seekhead reference at 787840842
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mkv debug: | - unknown seekhead reference at 788399718
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mkv debug: | - unknown seekhead reference at 788973042
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mkv debug: | - unknown seekhead reference at 789624721
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mkv debug: | - unknown seekhead reference at 790298890
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mkv debug: | - unknown seekhead reference at 790979171
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mkv debug: | - unknown seekhead reference at 791588399
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mkv debug: | - unknown seekhead reference at 792194527
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mkv debug: | - unknown seekhead reference at 792874287
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mkv debug: | - unknown seekhead reference at 793470868
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mkv debug: | - unknown seekhead reference at 794091386
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mkv debug: | - unknown seekhead reference at 794786608
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mkv debug: | - unknown seekhead reference at 795467569
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mkv debug: | - unknown seekhead reference at 796333505
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mkv debug: | - unknown seekhead reference at 797141288
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mkv debug: | - unknown seekhead reference at 798047212
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mkv debug: | - unknown seekhead reference at 798905649
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mkv debug: | - unknown seekhead reference at 799811181
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mkv debug: | - unknown seekhead reference at 800614082
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mkv debug: | - unknown seekhead reference at 801687748
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mkv debug: | - unknown seekhead reference at 802678440
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mkv debug: | - unknown seekhead reference at 803691627
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mkv debug: | - unknown seekhead reference at 804793411
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mkv debug: | - unknown seekhead reference at 805831672
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mkv debug: | - unknown seekhead reference at 806878495
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mkv debug: | - unknown seekhead reference at 807739798
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mkv debug: | - unknown seekhead reference at 808706131
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mkv debug: | - unknown seekhead reference at 809493036
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mkv debug: | - unknown seekhead reference at 810339764
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mkv debug: | - unknown seekhead reference at 811325424
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mkv debug: | - unknown seekhead reference at 812304518
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mkv debug: | - unknown seekhead reference at 812784126
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mkv debug: | - unknown seekhead reference at 812883210
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mkv debug: | - unknown seekhead reference at 812982294
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mkv debug: | - unknown seekhead reference at 813610344
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mkv debug: | - unknown seekhead reference at 814150587
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mkv debug: | - unknown seekhead reference at 814696460
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mkv debug: | - unknown seekhead reference at 815284192
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mkv debug: | - unknown seekhead reference at 815837503
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mkv debug: | - unknown seekhead reference at 816442930
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mkv debug: | - unknown seekhead reference at 816949849
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mkv debug: | - unknown seekhead reference at 817407821
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mkv debug: | - unknown seekhead reference at 817891321
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mkv debug: | - unknown seekhead reference at 818405314
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mkv debug: | - unknown seekhead reference at 818899283
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mkv debug: | - unknown seekhead reference at 819456984
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mkv debug: | - unknown seekhead reference at 819959219
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mkv debug: | - unknown seekhead reference at 820478022
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mkv debug: | - unknown seekhead reference at 820984135
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mkv debug: | - unknown seekhead reference at 821432868
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mkv debug: | - unknown seekhead reference at 822221332
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mkv debug: | - unknown seekhead reference at 822703200
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mkv debug: | - unknown seekhead reference at 823201629
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mkv debug: | - unknown seekhead reference at 824704467
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mkv debug: | - unknown seekhead reference at 825583139
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mkv debug: | - unknown seekhead reference at 826266066
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mkv debug: | - unknown seekhead reference at 826866270
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mkv debug: | - unknown seekhead reference at 827389765
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mkv debug: | - unknown seekhead reference at 827954787
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mkv debug: | - unknown seekhead reference at 828731659
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mkv debug: | - unknown seekhead reference at 830177225
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mkv debug: | - unknown seekhead reference at 831711040
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mkv debug: | - unknown seekhead reference at 832189317
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mkv debug: | - unknown seekhead reference at 832767177
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mkv debug: | - unknown seekhead reference at 833274437
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mkv debug: | - unknown seekhead reference at 833913805
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mkv debug: | - unknown seekhead reference at 834503274
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mkv debug: | - unknown seekhead reference at 835100049
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mkv debug: | - unknown seekhead reference at 835644806
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mkv debug: | - unknown seekhead reference at 836758319
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mkv debug: | - unknown seekhead reference at 837564293
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mkv debug: | - unknown seekhead reference at 838228453
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mkv debug: | - unknown seekhead reference at 838789382
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mkv debug: | - unknown seekhead reference at 840786204
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mkv debug: | - unknown seekhead reference at 841503534
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mkv debug: | - unknown seekhead reference at 843005302
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mkv debug: | - unknown seekhead reference at 844601040
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mkv debug: | - unknown seekhead reference at 845347239
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mkv debug: | - unknown seekhead reference at 845991667
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mkv debug: | - unknown seekhead reference at 846583447
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mkv debug: | - unknown seekhead reference at 847277403
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mkv debug: | - unknown seekhead reference at 848036147
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mkv debug: | - unknown seekhead reference at 848811962
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mkv debug: | - unknown seekhead reference at 849718515
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mkv debug: | - unknown seekhead reference at 850405798
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mkv debug: | - unknown seekhead reference at 851352041
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mkv debug: | - unknown seekhead reference at 852153905
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mkv debug: | - unknown seekhead reference at 853043626
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mkv debug: | - unknown seekhead reference at 854345045
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mkv debug: | - unknown seekhead reference at 855256125
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mkv debug: | - unknown seekhead reference at 856032360
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mkv debug: | - unknown seekhead reference at 856661866
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mkv debug: | - unknown seekhead reference at 857556081
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mkv debug: | - unknown seekhead reference at 858495561
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mkv debug: | - unknown seekhead reference at 859191372
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mkv debug: | - unknown seekhead reference at 859802285
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mkv debug: | - unknown seekhead reference at 860273567
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mkv debug: | - unknown seekhead reference at 860909841
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mkv debug: | - unknown seekhead reference at 861397004
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mkv debug: | - unknown seekhead reference at 862026878
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mkv debug: | - unknown seekhead reference at 862598153
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mkv debug: | - unknown seekhead reference at 863090828
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mkv debug: | - unknown seekhead reference at 863725899
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mkv debug: | - unknown seekhead reference at 865514999
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mkv debug: | - unknown seekhead reference at 867746005
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mkv debug: | - unknown seekhead reference at 871617234
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mkv debug: | - unknown seekhead reference at 872211621
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mkv debug: | - unknown seekhead reference at 872939512
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mkv debug: | - unknown seekhead reference at 875020925
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mkv debug: | - unknown seekhead reference at 875935822
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mkv debug: | - unknown seekhead reference at 876836375
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mkv debug: | - unknown seekhead reference at 877913767
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mkv debug: | - unknown seekhead reference at 879076834
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mkv debug: | - unknown seekhead reference at 880173083
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mkv debug: | - unknown seekhead reference at 880896454
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mkv debug: | - unknown seekhead reference at 881956067
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mkv debug: | - unknown seekhead reference at 882751224
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mkv debug: | - unknown seekhead reference at 883783830
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mkv debug: | - unknown seekhead reference at 884720809
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mkv debug: | - unknown seekhead reference at 886237211
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mkv debug: | - unknown seekhead reference at 887059360
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mkv debug: | - unknown seekhead reference at 888041061
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mkv debug: | - unknown seekhead reference at 888971161
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mkv debug: | - unknown seekhead reference at 889900955
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mkv debug: | - unknown seekhead reference at 890770922
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mkv debug: | - unknown seekhead reference at 891724891
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mkv debug: | - unknown seekhead reference at 892684764
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mkv debug: | - unknown seekhead reference at 893398524
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mkv debug: | - unknown seekhead reference at 894201083
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mkv debug: | - unknown seekhead reference at 895269140
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mkv debug: | - unknown seekhead reference at 896320008
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mkv debug: | - unknown seekhead reference at 897424345
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mkv debug: | - unknown seekhead reference at 898524873
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mkv debug: | - unknown seekhead reference at 900191880
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mkv debug: | - unknown seekhead reference at 901032220
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mkv debug: | - unknown seekhead reference at 902690927
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mkv debug: | - unknown seekhead reference at 904064776
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mkv debug: | - unknown seekhead reference at 905209516
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mkv debug: | - unknown seekhead reference at 908887545
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mkv debug: | - unknown seekhead reference at 913501681
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mkv debug: | - unknown seekhead reference at 922095335
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mkv debug: | - unknown seekhead reference at 924322016
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mkv debug: | - unknown seekhead reference at 925527029
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mkv debug: | - unknown seekhead reference at 926533211
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mkv debug: | - unknown seekhead reference at 927700997
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mkv debug: | - unknown seekhead reference at 928748110
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mkv debug: | - unknown seekhead reference at 929868381
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mkv debug: | - unknown seekhead reference at 931009022
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mkv debug: | - unknown seekhead reference at 932163099
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mkv debug: | - unknown seekhead reference at 933377422
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mkv debug: | - unknown seekhead reference at 934000961
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mkv debug: | - unknown seekhead reference at 935085035
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mkv debug: | - unknown seekhead reference at 936143084
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mkv debug: | - unknown seekhead reference at 937181375
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mkv debug: | - unknown seekhead reference at 938118803
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mkv debug: | - unknown seekhead reference at 939166391
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mkv debug: | - unknown seekhead reference at 940143492
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mkv debug: | - unknown seekhead reference at 941042185
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mkv debug: | - unknown seekhead reference at 941971973
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mkv debug: | - unknown seekhead reference at 942809631
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mkv debug: | - unknown seekhead reference at 943863522
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mkv debug: | - unknown seekhead reference at 944872453
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mkv debug: | - unknown seekhead reference at 946001858
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mkv debug: | - unknown seekhead reference at 947094269
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mkv debug: | - unknown seekhead reference at 948149872
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mkv debug: | - unknown seekhead reference at 949351070
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mkv debug: | - unknown seekhead reference at 950605055
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mkv debug: | - unknown seekhead reference at 951578029
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mkv debug: | - unknown seekhead reference at 952749085
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mkv debug: | - unknown seekhead reference at 953905758
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mkv debug: | - unknown seekhead reference at 955084163
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mkv debug: | - unknown seekhead reference at 956241224
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mkv debug: | - unknown seekhead reference at 957556535
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mkv debug: | - unknown seekhead reference at 958721582
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mkv debug: | - unknown seekhead reference at 959772102
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mkv debug: | - unknown seekhead reference at 960910564
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mkv debug: | - unknown seekhead reference at 961902952
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mkv debug: | - unknown seekhead reference at 962637695
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mkv debug: | - unknown seekhead reference at 963643291
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mkv debug: | - unknown seekhead reference at 964873831
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mkv debug: | - unknown seekhead reference at 965748471
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mkv debug: | - unknown seekhead reference at 966496551
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mkv debug: | - unknown seekhead reference at 967431307
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mkv debug: | - unknown seekhead reference at 968263653
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mkv debug: | - unknown seekhead reference at 969284128
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mkv debug: | - unknown seekhead reference at 970440891
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mkv debug: | - unknown seekhead reference at 971528369
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mkv debug: | - unknown seekhead reference at 972488353
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mkv debug: | - unknown seekhead reference at 973418823
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mkv debug: | - unknown seekhead reference at 974258234
mkv debug: | | + Seek
mkv debug: | - unknown seekhead reference at 975238966
mkv debug: | | + Seek
mkv debug: | - unknown seekhead reference at 976401642
mkv debug: | | + Seek
mkv warning: MKV/Ebml Parser: m_el[mi_level] == NULL
mkv warning: MKV/Ebml Parser: Up cannot escape itself
mkv debug: | - unknown seekhead reference at 977413387
mkv debug: | | + Seek
mkv debug: | | + Unknown (N7libebml8EbmlVoidE)
mkv debug: | - cues at 978046238
mkv debug: | + Cues
mkv debug: | - loading cues done.
mkv debug: | + Void
mkv debug: | + Information
mkv debug: | + Tracks
mkv debug: | + Void
mkv debug: | + Cluster
mkv debug: found 2 es
main debug: selecting program id=0
main debug: Buffering -2147483648%
mkv debug: Starting the UI Hook
main debug: using demux module "mkv"
main debug: looking for a subtitle file in /Volumes/Kelex/
main debug: looking for decoder module matching "any": 38 candidates
avcodec debug: trying to use direct rendering
avcodec debug: allowing 4 thread(s) for decoding
avcodec debug: avcodec codec (H264 - MPEG-4 AVC (part 10)) started
avcodec debug: using frame thread mode with 4 threads
main debug: using decoder module "avcodec"
main debug: looking for decoder module matching "any": 38 candidates
main debug: using decoder module "a52"
main debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua scripts in /Users/andy/Library/Application Support/org.videolan.vlc/lua/meta/reader
lua debug: Trying Lua scripts in /Applications/VLC.app/Contents/MacOS/share/lua/meta/reader
lua debug: Trying Lua playlist script /Applications/VLC.app/Contents/MacOS/share/lua/meta/reader/filename.luac
lua debug: Trying Lua scripts in /Applications/VLC.app/Contents/MacOS/share/share/lua/meta/reader
main debug: no meta reader modules matched
main debug: `file:///Volumes/Kelex/Believe%201x03.mkv' successfully opened
a52 debug: A/52 channels:6 samplerate:48000 bitrate:384000
main debug: reusing audio output
main debug: Buffering 0%
main debug: VLC is looking for: 'a52 ' 48000 Hz 3F2R/LFE frame=1536 samples/1536 bytes
auhal debug: attempting to use device 0
main debug: Buffering 33%
main debug: Buffering 66%
main debug: Stream buffering done (1001 ms in 90 ms)
auhal debug: using default audio device 68
auhal debug: found 9 stream formats for stream id 69
auhal debug: Audio device supports PCM mode only
auhal debug: current format is: [48000.000000][mcpl][9][8][1][8][2][32]
main debug: looking for text renderer module matching "any": 3 candidates
auhal debug: layout of AUHAL has 2 channels
auhal debug: selected 2 physical channels for device output
auhal debug: VLC will output: Stereo
auhal debug: we set the AU format: [48000.000000][mcpl][9][8][1][8][2][32]
freetype debug: looking for Arial Unicode MS
auhal debug: the actual set AU format is [48000.000000][mcpl][9][8][1][8][2][32]
auhal debug: analog output successfully opened
main debug: output 'f32l' 48000 Hz Stereo frame=1 samples/8 bytes
main debug: looking for audio volume module matching "any": 2 candidates
main debug: using audio volume module "float_mixer"
main debug: input 'a52 ' 48000 Hz 3F2R/LFE frame=1536 samples/1536 bytes
main debug: looking for audio filter module matching "scaletempo": 14 candidates
scaletempo debug: format: 48000 rate, 6 nch, 4 bps, fl32
scaletempo debug: params: 30 stride, 0.200 overlap, 14 search
scaletempo debug: 1.000 scale, 1440.000 stride_in, 1440 stride_out, 1152 standing, 288 overlap, 672 search, 2400 queue, fl32 mode
main debug: using audio filter module "scaletempo"
main debug: conversion: 'a52 '->'f32l' 48000 Hz->48000 Hz 3F2R/LFE->3F2R/LFE
main debug: looking for audio converter module matching "any": 11 candidates
freetype debug: found /Library/Fonts/Arial Unicode.ttf
freetype debug: Using Arial Unicode MS as font from file /Library/Fonts/Arial Unicode.ttf
main debug: no audio converter modules matched
main debug: looking for audio converter module matching "any": 11 candidates
main debug: using audio converter module "a52tofloat32"
main debug: conversion pipeline complete
main debug: conversion: 'f32l'->'f32l' 48000 Hz->48000 Hz 3F2R/LFE->Stereo
main debug: looking for audio converter module matching "any": 11 candidates
main debug: using audio converter module "simple_channel_mixer"
main debug: conversion pipeline complete
main debug: looking for audio resampler module matching "any": 2 candidates
main debug: using audio resampler module "ugly_resampler"
main debug: End of audio preroll
freetype debug: using fontsize: 2
main debug: using text renderer module "freetype"
main debug: looking for video filter2 module matching "any": 54 candidates
swscale debug: 32x32 chroma: YUVA -> 16x16 chroma: RGBA with scaling using Bicubic (good quality)
main debug: using video filter2 module "swscale"
main debug: looking for video filter2 module matching "any": 54 candidates
macosx debug: releasing old sleep blocker (9114)
yuvp debug: YUVP to YUVA converter
main debug: using video filter2 module "yuvp"
macosx debug: prevented sleep through IOKit (10359)
main debug: Deinterlacing available
main debug: deinterlace 0, mode blend, is_needed 0
main debug: Opening vout display wrapper
main debug: looking for vout display module matching "any": 5 candidates
main debug: looking for vout window nsobject module matching "any": 1 candidates
macosx debug: returning videoview with proposed position x=0, y=0, width=1280, height=720
main debug: using vout window nsobject module "macosx"
macosx debug: toggle playlist from state: removed splitview 0, minimized view 0. Sender is 0x0, unhide video view 0
macosx debug: toggle playlist to state: removed splitview 0, minimized view 0
macosx debug: releasing old sleep blocker (10359)
macosx debug: prevented sleep through IOKit (10361)
main debug: VoutDisplayEvent 'resize' 1280x720 window
main debug: using vout display module "vout_macosx"
main debug: VoutDisplayEvent 'resize' 1280x720 window
main debug: original format sz 1280x720, of (0,0), vsz 1280x720, 4cc I420, sar 1:1, msk r0x0 g0x0 b0x0
main debug: removing module "freetype"
main debug: looking for text renderer module matching "any": 3 candidates
freetype debug: looking for Arial Unicode MS
freetype debug: found /Library/Fonts/Arial Unicode.ttf
freetype debug: Using Arial Unicode MS as font from file /Library/Fonts/Arial Unicode.ttf
freetype debug: using fontsize: 2
main debug: using text renderer module "freetype"
avcodec debug: using direct rendering
main debug: End of video preroll
main debug: Received first picture
freetype debug: looking for Arial Unicode MS
freetype debug: found /Library/Fonts/Arial Unicode.ttf
main debug: Decoder buffering done in 179 ms
main warning: playback too early (-47904): down-sampling
main debug: VoutDisplayEvent 'mouse button' 0 t=8
main debug: VoutDisplayEvent 'mouse button' 0 t=9
main error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 1000 ms)
main error: ES_OUT_RESET_PCR called
main warning: early picture skipped
main debug: End of audio preroll
main debug: Buffering 0%
main debug: Buffering 37%
main debug: Buffering 70%
main debug: Stream buffering done (1168 ms in 1 ms)
main debug: End of video preroll
main debug: Received first picture
main debug: Decoder buffering done in 29 ms
main warning: playback way too early (-282827): playing silence
main debug: inserting 13575 zeroes
main warning: buffer too late (-253749 us): dropped
main warning: buffer too late (-221884 us): dropped
main error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 1600 ms)
main warning: buffer too late (-189937 us): dropped
main error: ES_OUT_RESET_PCR called
main warning: buffer too late (-158018 us): dropped
main warning: buffer too late (-126139 us): dropped
main warning: buffer too late (-94184 us): dropped
main warning: buffer too late (-62227 us): dropped
main warning: early picture skipped
main debug: playback too late (30550): flushing buffers
main warning: picture is too late to be displayed (missing 569 ms)
main debug: End of audio preroll
main debug: Buffering 0%
main debug: Buffering 20%
main debug: Buffering 41%
main debug: Buffering 62%
main debug: Buffering 85%
main debug: Stream buffering done (1793 ms in 11 ms)
main debug: End of video preroll
main debug: Received first picture
main debug: Decoder buffering done in 22 ms
main warning: playback way too early (-310261): playing silence
main debug: inserting 14892 zeroes
macosx debug: releasing sleep blocker (10361)
Re: MKV stuttering
Posted: 28 Mar 2014 19:53
by Shandyman
anyone?
Re: MKV stuttering
Posted: 30 Mar 2014 11:24
by plasmacutter
There is a possibility you're ending up with I/O bottlenecking on the disk.
Thoughts on potential config options to smooth this:
Open preferences, click "show all", click on "input/codecs", scroll down until you reach a set of sliders reading "file caching" "live capture caching" "disk caching", etc.
Slide all of those all the way to the right, save, then re-load whatever file was causing this.
The application of this increase to caching has provided smooth playback from a NAS device I use over wireless. There's a good chance it will help.