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Hello,
I'm trying to remux a m4v file (adapted for apple devices) into an mkv container.
Demuxing the initial .m4v file went fine in MP4BOX and produced following 8 files:
1. (HD)_track1.h264
2. (HD)_track1.h264.mlmix
3. (HD)_track1.aac
4. (HD)_track2.aac
5. (HD)_track3.ac3
6. (HD)_6_text.srt
7. (HD)_track7.text
8. (HD)_track8.jpeg
Having stripped off two audio streams (track1 & track3) I inserted the following 3 streams into MKVToolNix (additionally skipping the .jpeg and .text files the latter being an apple chapters file I believe and dropping the .mlmix file (having no clue what that is):
1. (HD)_track1.h264
2. (HD)_track2.aac
3. (HD)_6_text.srt
The resulting .mkv file plays back the video at a very high speed (the audio playing normally), rendering the file useless. I thought, may be the omitted streams might be the reason and tried to add the .mlmix file as input where MKVToolnix failed with this message:
"mkvmerge FAILED with the return code of 2. There were ERRORS. mkvmerge cannot cope with yet) or this is a bug in mkvmerge itself. The error message was:"
The .h264 file itself plays back normally in regular players and in the fast forward mode in Power DVD 14 player (default program for this extension).
The .m4v file's specs are following. My question is what do I do wrong?
Code:General Complete name : (HD).m4v Format : MPEG-4 Codec ID : M4V File size : 5.25 GiB Duration : 1h 37mn Overall bit rate mode : Variable Overall bit rate : 7 713 Kbps Collection : Season : Album : Album/Sorted by : Album/Performer : Part : 1 Part/Position : 1 Part/Total : 1 Track name : Track name/Position : 1 Performer : Genre : ContentType : TV Show Description : Recorded date : UTC 2008-09-01 08:00:00 Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-23 19:44:45 Cover : Yes Rating : None Part_ID : 1 HDVideo : Yes AppleStoreCatalogID : 920289384 Vendor : Apple:vendor-id:2008-85208-1101 Video #1 ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.1 Format settings, CABAC : No Format settings, ReFrames : 3 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 1h 37mn Bit rate : 7 000 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 23.976 fps Minimum frame rate : 23.974 fps Maximum frame rate : 90 000.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.317 Stream size : 4.76 GiB (91%) Title : Main Program Writing library : x264 core 130 r2273 b3065e6 Encoding settings : cabac=0 / ref=3 / deblock=1:-3:-2 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.25 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=18 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=1 / weightb=0 / open_gop=0 / weightp=0 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=7000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=9500 / vbv_bufsize=9500 / nal_hrd=none / ip_ratio=1.40 / aq=1:0.80 Language : English Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-22 13:54:58 Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Color range : Limited Video #2 ID : 8 Format : JPEG Codec ID : jpeg Duration : 1h 37mn Bit rate mode : Variable Bit rate : 747 bps Width : 640 pixels Height : 360 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 0.002 fps Minimum frame rate : 0.001 fps Maximum frame rate : 0.003 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Compression mode : Lossy Bits/(Pixel*Frame) : 1.621 Stream size : 456 KiB (0%) Title : Chapter Images Language : English Encoded date : UTC 2015-01-23 19:44:26 Tagged date : UTC 2015-01-23 19:44:26 Audio #1 ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 1h 37mn Bit rate mode : Variable Bit rate : 158 Kbps Maximum bit rate : 234 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 110 MiB (2%) Title : Russian Stereo Language : Russian Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-22 13:55:14 Audio #2 ID : 3 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 1h 37mn Bit rate mode : Variable Bit rate : 164 Kbps Maximum bit rate : 264 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 114 MiB (2%) Title : English Stereo Language : English Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-22 13:55:15 Audio #3 ID : 4 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : ac-3 Duration : 1h 37mn Bit rate mode : Constant Bit rate : 384 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 : 267 MiB (5%) Title : Russian DD 5.1 Language : Russian Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-22 13:49:39 Text #1 ID : 5 Format : Timed Text Muxing mode : sbtl Codec ID : tx3g Duration : 1h 36mn Bit rate mode : Variable Bit rate : 137 bps Stream size : 96.4 KiB (0%) Title : Russian Subtitle Language : Russian Encoded date : UTC 2015-01-22 13:49:00 Tagged date : UTC 2015-01-22 13:49:00 Text #2 ID : 6 Format : Timed Text Muxing mode : sbtl Codec ID : tx3g Duration : 1h 36mn Bit rate mode : Variable Bit rate : 90 bps Stream size : 63.2 KiB (0%) Title : English Subtitle Language : English Encoded date : UTC 2015-01-23 19:43:55 Tagged date : UTC 2015-01-23 19:43:55 Menu #1 00:00:00.000 : 1 00:07:44.964 : 2 00:20:43.200 : 3 00:30:20.861 : 4 00:40:38.853 : 5 00:49:55.492 : 6 01:01:07.873 : 7 01:11:25.198 : 8 01:22:04.628 : 9 01:32:00.390 : 10 Menu #2 ID : 7 Codec ID : text Duration : 1h 37mn Title : Chapter Titles Language : English Encoded date : UTC 2015-01-23 19:44:20 Tagged date : UTC 2015-01-23 19:44:20 00:00:00.000 : 1 00:07:44.964 : 2 00:20:43.200 : 3 00:30:20.861 : 4 00:40:38.853 : 5 00:49:55.492 : 6 01:01:07.873 : 7 01:11:25.198 : 8 01:22:04.628 : 9 01:32:00.390 : 10 Bit rate mode : VBR
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In mkvtoolnix, highlight the video track. In the format specific options tab, under "FPS", force the framerate to 24000/1001 , then remux
If that doesn't work, try importinig the m4v directly into mkvtoolnix, without demuxing beforehand. Then checkmark/uncheckmark the the wanted/unwanted streams and then mux -
Thanks poisondeathray,
That worked. The frame rate of the output file isn't made different from the original by this, isn't it? It just enforces it - am I correct? -
Double check that it's in sync, and that you can seek throughout the file.Originally Posted by Aquinax
Chances are , it supposed to be a CFR (constant frame rate) file. The base frame rate is supposed to be 23.976 (which is an approximation of the actual frame rate of 24000/1001) . The only reason the FPS is "off" in the first place is because of the way it was muxed as a m4v. Even if original file is fine, various software like mkvtoolnix, ffmpeg etc.. are reading the wrong information in the timecodes. So when you remux it, it muxes with the wrong fps information. Obviously, the max framerate isn't 90000 , even if it was really VFR.
Frame rate mode : Variable
Frame rate : 23.976 fps
Minimum frame rate : 23.974 fps
Maximum frame rate : 90 000.000 fps -
The final video file is in sync and quite fine. As to the reasons why it reports as VFR ... - the initial encoding of the main video stream ( _track1.h264) might be the cause as it plays back crazily as a standalone file. But I wouldn't want to explore further, your piece of advice was like a beam of light in total darkness for me so I'm glad and satisfied with the end result and this does it for me. My sincere thanks again, poisondeathray.
Kind regards.
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