7.1 DTS-HD and 5.1 DTS DON'T CONVERT PROPERLY??

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harleyquinn
Posts: 1
Joined: Mon Jan 09, 2017 8:49 am

7.1 DTS-HD and 5.1 DTS DON'T CONVERT PROPERLY??

Post by harleyquinn » Mon Jan 09, 2017 9:10 am

hi! so i recently used makemkv to convert a movie and when i play it in an mkv file, everything's fine and it'll say it's 7.1 or 5.1 audio. but if i ever try to convert it to mp4 (i used multiple converters) it converts 5.1 audio that's supposed to have 6 channels to a file that has 5 channels. so one audio track is missing?? (sometimes the track that everyone's talking on rather than the background music) i also tried converting my 7.1 file to mp4 but every program i used only gave me a 5.1 option as if it doesn't have 8 channels. does anyone know how to fix this? is there something i need to install and put into the makemkv program file? i assume it's something to do with makemkv because those converters normally work.

ndjamena
Posts: 830
Joined: Mon Jan 07, 2013 12:23 am

Re: 7.1 DTS-HD and 5.1 DTS DON'T CONVERT PROPERLY??

Post by ndjamena » Mon Jan 09, 2017 9:29 am

Code: Select all

ffmpeg.x64 -i "F:\Videos\Movies\Super Heroes\Marvel\Marvel Cinematic Universe\13 - Captain America_ Civil War.mkv" -c:v libx264 -c:a aac "F:\Videos\Movies\Super Heroes\Marvel\Marvel Cinematic Universe\13 - Captain America_ Civil War.mp4"

Code: Select all

General
Complete name                            : F:\Videos\Movies\Super Heroes\Marvel\Marvel Cinematic Universe\13 - Captain America_ Civil War.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/avc1/mp41)
File size                                : 26.5 MiB
Duration                                 : 2 h 27 min
Overall bit rate                         : 25.1 kb/s
Movie name                               : Captain America: Civil War
Writing application                      : Lavf57.61.100

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 1 min 35 s
Bit rate                                 : 1 876 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.038
Stream size                              : 21.3 MiB (80%)
Writing library                          : x264 core 148 r2744 b97ae06
Encoding settings                        : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=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=23.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language                                 : English
Menus                                    : 3

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 1 min 32 s
Bit rate mode                            : Constant
Bit rate                                 : 469 kb/s
Channel(s)                               : 2 channels
Channel(s)_Original                      : 8 channels
Channel positions                        : Front: L C R, Side: L R, Back: L R, LFE
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 spf)
Compression mode                         : Lossy
Stream size                              : 5.18 MiB (20%)
Title                                    : Surround 7.1
Language                                 : English
Default                                  : Yes
Alternate group                          : 1
Menus                                    : 3
7.1 Audio.

ndjamena
Posts: 830
Joined: Mon Jan 07, 2013 12:23 am

Re: 7.1 DTS-HD and 5.1 DTS DON'T CONVERT PROPERLY??

Post by ndjamena » Mon Jan 09, 2017 10:21 am

OK, so it looks like Handbrake only goes up to 5.1 output for AAC output.

I don't generally use GUIs so I'm not sure if MeGUI, StaxRip or any of the others can handle 7.1. I don't know what you've tried

If FFMPEG is giving you troubles for any reason, you can try EAC3To which was basically designed specifically for ripping DVDs and Blu Ray. If it gives you problems the author on Doom9 would like to know about it. Of course EAC3To won't mux everything into an MP4 so you'd have to use MP4Box or FFMPEG after converting the audio to get the final output. EAC3To needs NeroAACEnc to get AAC, although you could get away with converting to PCM/WAV and then using QAAC or FFMPEG to convert to AAC.

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