MP4 Plays At 24p (Correct Frame Rate) MKV Do Not And Sound Sync Issue

[Mike Nelson]

As per the title, if I make a file of the same BD main feature the MKV file will typically play at 1080/60 but if I go for the MP4 output it gets it right and they play at 1080/24

The MP4 versions of the same film seem to have have more of a sound sync issue.

So to sum up MP4, correct frame rate but sound out of sync (5.1 sound)
MKV, wrong frame rate but sound in sync (5.1 sound)

 

[Adbear]

Which film from which region?

Did you send in logfiles so the developers can check it?

What software are you using to play it back?

If you drop the files into Mediainfo what frame-rate does it think the files are?

 

[Mike Nelson]

For example the Blu-Ray of Gold with Roger Moore (UK release)

Playing on my Minix Neo X8-H Plus or WD TV Live linked to my LG TV (all devices are set to auto 24p and work with other files made with other products and with BD's)

This file plays at 1080p 60Hz

General
Unique ID : 309617915431229363383135860925117349166 (0xE8EE3DD0A2B3D318024C67ED1CF5BD2E)
Unique ID : 309617915431229363383135860925117349166 (0xE8EE3DD0A2B3D318024C67ED1CF5BD2E) Complete name : \\NETGEAR-01\Videos\HD Video\Gold (1974).mkv
Complete name : \\NETGEAR-01\Videos\HD Video\Gold (1974).mkv Format : Matroska
Format : Matroska Format version : Version 2
Format version : Version 2 File size : 18.2 GiB
File size : 18.2 GiB Duration : 2h 4mn
Duration : 2h 4mn Overall bit rate : 21.0 Mbps
Overall bit rate : 21.0 Mbps Writing application : Lavf55.20.0
Writing application : Lavf55.20.0 Writing library : Lavf55.20.0
Writing library : Lavf55.20.0
Video
ID : 2
ID : 2 Format : AVC
Format : AVC Format/Info : Advanced Video Codec
Format/Info : Advanced Video Codec Format profile : Main@L4.1
Format profile : Main@L4.1 Format settings, CABAC : Yes
Format settings, CABAC : Yes Format settings, ReFrames : 4 frames
Format settings, ReFrames : 4 frames Format settings, GOP : M=3, N=24
Format settings, GOP : M=3, N=24 Codec ID : V_MPEG4/ISO/AVC
Codec ID : V_MPEG4/ISO/AVC Duration : 2h 4mn
Duration : 2h 4mn Nominal bit rate : 20.9 Mbps
Nominal bit rate : 20.9 Mbps Width : 1 920 pixels
Width : 1 920 pixels Height : 1 080 pixels
Height : 1 080 pixels Display aspect ratio : 16:9
Display aspect ratio : 16:9 Frame rate mode : Constant
Frame rate mode : Constant Frame rate : 24.000 fps
Frame rate : 24.000 fps Color space : YUV
Color space : YUV Chroma subsampling : 4:2:0
Chroma subsampling : 4:2:0 Bit depth : 8 bits
Bit depth : 8 bits Scan type : Progressive
Scan type : Progressive Bits/(Pixel*Frame) : 0.420
Bits/(Pixel*Frame) : 0.420 Writing library : x264 core 142 r2453 ea0ca51
Writing library : x264 core 142 r2453 ea0ca51 Encoding settings : cabac=1 / ref=1 / deblock=0:0:0 / analyse=0:0 / me=dia / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=4 / chroma_me=0 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=4 / lookahead_threads=1 / sliced_threads=0 / slices=4 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=2 / b_pyramid=2 / b_adapt=0 / b_bias=0 / direct=1 / weightb=0 / open_gop=1 / weightp=0 / keyint=24 / keyint_min=13 / scenecut=0 / intra_refresh=0 / rc=abr / mbtree=0 / bitrate=20909 / ratetol=1.0 / qcomp=0.50 / qpmin=2 / qpmax=31 / qpstep=3 / ip_ratio=1.40 / pb_ratio=1.25 / aq=0
Encoding settings : cabac=1 / ref=1 / deblock=0:0:0 / analyse=0:0 / me=dia / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=4 / chroma_me=0 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=4 / lookahead_threads=1 / sliced_threads=0 / slices=4 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=2 / b_pyramid=2 / b_adapt=0 / b_bias=0 / direct=1 / weightb=0 / open_gop=1 / weightp=0 / keyint=24 / keyint_min=13 / scenecut=0 / intra_refresh=0 / rc=abr / mbtree=0 / bitrate=20909 / ratetol=1.0 / qcomp=0.50 / qpmin=2 / qpmax=31 / qpstep=3 / ip_ratio=1.40 / pb_ratio=1.25 / aq=0 Default : No
Default : No Forced : No
Forced : No
Audio
ID : 1
ID : 1 Format : AAC
Format : AAC Format/Info : Advanced Audio Codec
Format/Info : Advanced Audio Codec Format profile : LC
Format profile : LC Codec ID : A_AAC
Codec ID : A_AAC Duration : 2h 4mn
Duration : 2h 4mn Channel(s) : 2 channels
Channel(s) : 2 channels Channel positions : Front: L R
Channel positions : Front: L R Sampling rate : 48.0 KHz
Sampling rate : 48.0 KHz Compression mode : Lossy
Compression mode : Lossy Delay relative to video : 3ms
Delay relative to video : 3ms Language : English
Language : English Default : No
Default : No Forced : No
Forced : No

If I use CloneBD to make a mp4 it will play at 24p but is jerky and thus I deleted that version.

 

[Mike Nelson]

I guess I should also mention that chapter information does not seem to work either in the generated files

 

[Adbear]

I don't have that film, but with others I've tested they all play at 23.97 on my TV for both MP4 and MKV, and as you can see Mediainfo sees it as being encoded at 24fps.

As to the chapters that has already been reported for MKV's, and I'm pretty sure MP4 doesn't support chapter info anyway.

Are you on the latest firmware for the Minix as there were issues with earlier firmwares and some files at 23.97/24

 

[Mike Nelson]

My WD TV Live is on the latest firmware and the Minix has XBMC 13.3 Beta 8 which has there latest frame-rate switching module.

I will make some shorter clips of films to see how well they work using mp4 and mkv