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  1. Member
    Join Date
    Jun 2013
    Location
    Cantabria, Spain
    Search Comp PM
    Hi everybody, I have several MKV files which I want to remux to a M4V file so I can play them in Quicktime and iOS devices. The problem is that when I do this, using iFlicks (Which also adds some metadata about the movies) the resulting movie has either audio out of sync, the program crashes and results in a ~400MB, 20 minute file (Instead of two hour and 10GB), and so on.

    I tried to demux the files to *.h264 & .ac3 files and then mux them manually to M4v (Using Subler), but even before muxing them if I play the .h264 in VLC it plays laggy and stops, and the timer is always "0:00" as if there was a problem in the file.

    Here's a sample mediainfo of one of the files with trouble:

    Code:
    General
    Unique ID                                : 247054387582707289461419451282943196551 (0xB9DCF1BD3CB0EE0A55CF3302C51D3D87)
    Complete name                            : file.mkv
    Format                                   : Matroska
    Format version                           : Version 2
    File size                                : 5.02 GiB
    Duration                                 : 1h 32mn
    Overall bit rate                         : 7 747 Kbps
    Movie name                               : The.Mechanic x lagartish
    Encoded date                             : UTC 2011-07-05 23:55:06
    Writing application                      : mkvmerge v4.8.0 ('I Got The...') creado el May 23 2011 22:30:05
    Writing library                          : libebml v1.2.0 + libmatroska v1.1.0
    
    Video
    ID                                       : 1
    Format                                   : AVC
    Format/Info                              : Advanced Video Codec
    Format profile                           : High@L4.1
    Format settings, CABAC                   : Yes
    Format settings, ReFrames                : 5 frames
    Muxing mode                              : Header stripping
    Codec ID                                 : V_MPEG4/ISO/AVC
    Duration                                 : 1h 32mn
    Bit rate                                 : 6 345 Kbps
    Width                                    : 1 920 pixels
    Height                                   : 800 pixels
    Display aspect ratio                     : 2.40:1
    Frame rate mode                          : Constant
    Frame rate                               : 23.976 fps
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Progressive
    Bits/(Pixel*Frame)                       : 0.172
    Stream size                              : 4.11 GiB (82%)
    Writing library                          : x264 core 114 r1913 5fd3dce
    Encoding settings                        : cabac=1 / ref=5 / deblock=1:-3:-3 / analyse=0x3:0x133 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=2 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=23.5 / qcomp=0.60 / qpmin=3 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
    Language                                 : English
    Default                                  : Yes
    Forced                                   : No
    
    Audio #1
    ID                                       : 2
    Format                                   : AC-3
    Format/Info                              : Audio Coding 3
    Mode extension                           : CM (complete main)
    Format settings, Endianness              : Big
    Muxing mode                              : Header stripping
    Codec ID                                 : A_AC3
    Duration                                 : 1h 32mn
    Bit rate mode                            : Constant
    Bit rate                                 : 448 Kbps
    Channel(s)                               : 6 channels
    Channel positions                        : Front: L C R, Side: L R, LFE
    Sampling rate                            : 48.0 KHz
    Bit depth                                : 16 bits
    Compression mode                         : Lossy
    Delay relative to video                  : 25s 0ms
    Stream size                              : 297 MiB (6%)
    Language                                 : Spanish
    Default                                  : Yes
    Forced                                   : No
    
    Audio #2
    ID                                       : 3
    Format                                   : AC-3
    Format/Info                              : Audio Coding 3
    Mode extension                           : CM (complete main)
    Format settings, Endianness              : Big
    Muxing mode                              : Header stripping
    Codec ID                                 : A_AC3
    Duration                                 : 1h 32mn
    Bit rate mode                            : Constant
    Bit rate                                 : 640 Kbps
    Channel(s)                               : 6 channels
    Channel positions                        : Front: L C R, Side: L R, LFE
    Sampling rate                            : 48.0 KHz
    Bit depth                                : 16 bits
    Compression mode                         : Lossy
    Stream size                              : 425 MiB (8%)
    Language                                 : English
    Default                                  : No
    Forced                                   : No
    
    Audio #3
    ID                                       : 4
    Format                                   : MPEG Audio
    Format version                           : Version 1
    Format profile                           : Layer 3
    Muxing mode                              : Header stripping
    Codec ID                                 : A_MPEG/L3
    Codec ID/Hint                            : MP3
    Duration                                 : 1h 32mn
    Bit rate mode                            : Constant
    Bit rate                                 : 160 Kbps
    Channel(s)                               : 2 channels
    Sampling rate                            : 48.0 KHz
    Compression mode                         : Lossy
    Stream size                              : 106 MiB (2%)
    Title                                    : latin
    Writing library                          : LAME3.96.1
    Language                                 : Spanish
    Default                                  : No
    Forced                                   : No
    
    Text #1
    ID                                       : 5
    Format                                   : UTF-8
    Codec ID                                 : S_TEXT/UTF8
    Codec ID/Info                            : UTF-8 Plain Text
    Title                                    : Forzados
    Language                                 : Spanish
    Default                                  : Yes
    Forced                                   : No
    
    Text #2
    ID                                       : 6
    Format                                   : UTF-8
    Codec ID                                 : S_TEXT/UTF8
    Codec ID/Info                            : UTF-8 Plain Text
    Language                                 : Spanish
    Default                                  : No
    Forced                                   : No
    
    Text #3
    ID                                       : 7
    Format                                   : UTF-8
    Codec ID                                 : S_TEXT/UTF8
    Codec ID/Info                            : UTF-8 Plain Text
    Language                                 : English
    Default                                  : No
    Forced                                   : No
    Any ideas? Thanks!!
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  2. you can try if http://www.mkvrepair.com/ is able to fix your file.
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  3. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date
    Aug 2000
    Location
    Sweden
    Search Comp PM
    Try mkv2mp4. Or are you a mac-only user?
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  4. Member
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    Jun 2013
    Location
    Cantabria, Spain
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    Originally Posted by Selur View Post
    you can try if http://www.mkvrepair.com/ is able to fix your file.
    Thanks, I'll try it right now

    Originally Posted by Baldrick View Post
    Try mkv2mp4. Or are you a mac-only user?
    No, I have Windows too, but I prefer Mac apps (Of course if there aren't any, I have no problem on using Windows)
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  5. Member
    Join Date
    Jun 2013
    Location
    Cantabria, Spain
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    Well, MKVrepair, now called Meteorite, simply crashes when trying to open a MKV file (Both "broken?" and perfectly fine), so I tried Mkv2mp4 in Windows (Very slow but I was using Parallels so that's something to expect). That did the job well, although I'll check if I can ask the program to output the separate *.h264 and *.ac3 tracks in case I need to edit them or something like that. Probably tomorrow though, it's late here and I don't want to do it now.

    UPDATE: I tried MKVrepair/Meteorite in Windows too, but it doesn't fix anything, as the resulting MKV also has problems when demuxing the video track.
    Last edited by fernandopcg; 30th Jun 2013 at 08:49.
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