AR Problems with MKVs

[Frankdux]

Hello All, Im new to some of this stuff and have been struggling with AR problems on some MKVs

I have a MKV file, its AR is 2.35 when I put the file on a usb stick and insert it into my TV (16x9 47") the picture is squished on the sides giving the TALL Effect.

The Ratio Options on the TV are locked out at this point as well, Not sure why it does that.

How can I correct this with out having to re-encode the files again. or if I have to re-encode whats going to be the easiest way.


Thank you

[davexnet]

Post the output from Mediainfo/text view for this file.

[Frankdux]

General
Complete name : F:\video 1.mkv
Format : Matroska
File size : 4.96 GiB
Duration : 1h 50mn
Overal bit rate : 6418 Kbps
Encoded date : UTC 2012-07-23 14:20:55
Writing application : mkvmerge v3.3.0 ('Language') built on Mar 24 2010 14:59:24
Writing library : libebml v0.8.0 + libmatroska v0.9.0

Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 50mn
Bit rate : 5707 Kbps
Nominal bit rate : 6000 Kbps
Width : 1920 pixels
Height : 1080 pixels
Display aspect ratio : 2.35
Frame rate mode : Variable
Frame rate : 23.970 fps
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.121
Writing library : x264 core 104
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=0.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=12 / 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=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=abr / mbtree=0 / bitrate=6000 / ratetol=0.7 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.41 / pb_ratio=1.25 / aq=1:1.00

Audio
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : A_AC3
Duration : 1h 50mn
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Rear: L R, LFE
Sampling rate : 48.0 KHz
Language : English

[Frankdux]

I have tried using a few programs to change it to 16/9 but the output still plays the same, also used mkvmergui and changed the AR and Display AR, using the Header Editor.. same results.

So far I have found a program called Wondershare Video Converter Ultimate that took the video, re-encoded it and set the 16/9 properly with out having to do anything. but there is the problem with that output. the video stutters for the first 10mins. I tried it a few times, and tried 4 other different files and all do the same...

So if i can figure out whats causing the stuttering then im good. (it stutters on PC, and when playing from TVs media player)

[Tom Saurus]

With what device are you playing the file to be displayed on your television? If you are playing it on your computer and have your computer hooked up to the hdmi or pc input, try playing it with VLC Media Player, as there are a lot of options in the program to make it look the way you want on your television.

I don't know if it would be of any use to you, but I started a thread about .mkv files and aspect ratio and other posters here at videohelp gave me advice, perhaps there is something you can glean from it that might be of benefit to you. Here is the link to that thread:

https://forum.videohelp.com/threads/347520-Mpeg2-to-mkv-unwanted-Aspect-Ratio-Change

[Frankdux]

I lay the fire directly on my TV, why out of the last 10 mkv files am I only having a problem with this one. there has to be away to re-encode it then and re-size or crop or whatever to get it to fit properly on a 16/9 TV

[davexnet]

According to the Mediainfo, the physical dimensions are 1920/1080 (16*9), with a display aspect ratio of 2.35.

If the TV was ignoring the AR info, I would have expected it to display as full 16*9, which would make things
taller than they are. Is this what is happening, or are you seeing black bars on the sides. (pillarboxing)

What did the re-encode do? Letter box the movie in the 1920*1080 frame? Stuttering may be caused by too high bitrate,
or other factors in the AVC encoding (profile, reference frames, for example)

There are others posters here with much more AVC experience than I, perhaps they'll assist further.

[Frankdux]

Its displaying full screen (and making everything taller) .. I re-encoded with WonderShare and it fixed that but causes all the videos to stutter for 10mins or so at the begining

I have now just finished a re-encode with dvdFab and it fixed also and no stutter. the output AR is 1920x816 now