Video sourced from 16:9 DVD playing back in wrong aspect ratio

[crusher11 1138]

Whether it's playing back in 4:3 or 1:1 I don't know, I've not measured it, but it's definitely not 16:9. It plays back correctly as 16:9 if I find it in Windows Explorer and play it in VLC, but Emby for some reason isn't playing it correctly. Occurs in both the web player (Chrome) and the LG TV player.

 

MediaInfo:

 

General
Complete name                            : \Backups\WWE Events\N\No Way Out 2009 (2009)\No Way Out 2009 (2009).mkv
Format                                   : Matroska
Format version                           : Version 2
File size                                : 6.36 GiB
Duration                                 : 2 h 47 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 5 453 kb/s
Encoded date                             : UTC 2019-09-06 12:42:15
Writing application                      : MakeMKV v1.14.4 win(x64-release)
Writing library                          : libmakemkv v1.14.4 (1.3.5/1.4.7) win(x64-release)
Original source medium                   : DVD-Video

Video
ID                                       : 1
ID in the original source medium         : 224 (0xE0)
Format                                   : MPEG Video
Format version                           : Version 2
Format profile                           : Main@[member="Main"]
Format settings, BVOP                    : Yes
Format settings, Matrix                  : Custom
Format settings, GOP                     : Variable
Format settings, picture structure       : Frame
Codec ID                                 : V_MPEG2
Codec ID/Info                            : MPEG 1 or 2 Video
Duration                                 : 2 h 47 min
Bit rate mode                            : Variable
Bit rate                                 : 4 999 kb/s
Maximum bit rate                         : 9 800 kb/s
Width                                    : 720 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Original display aspect ratio            : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Standard                                 : NTSC
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan order                               : Top Field First
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.483
Time code of first frame                 : 01:02:31;16
Time code source                         : Group of pictures header
Stream size                              : 5.83 GiB (92%)
Language                                 : English
Default                                  : No
Forced                                   : No
Color primaries                          : BT.601 NTSC
Transfer characteristics                 : BT.601
Matrix coefficients                      : BT.601

Audio
ID                                       : 2
ID in the original source medium         : 189 (0xBD)-128 (0x80)
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Mode extension                           : CM (complete main)
Format settings, Endianness              : Big
Codec ID                                 : A_AC3
Duration                                 : 2 h 47 min
Bit rate mode                            : Constant
Bit rate                                 : 448 kb/s
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 spf)
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 535 MiB (8%)
Title                                    : Dolby Digital 5.1
Language                                 : English
Default                                  : Yes
Forced                                   : No

 

The attached log includes an attempt at playback via the web player.

embyserver.txt

[Guest asrequested]

Transcode it to h264. It's probably the padding. Just run it through handbrake, and remove. It'll deinterlace it and it'll play much better, too.

[crusher11 1138]

What padding? There's no padding. It's 16:9 widescreen, but it's squashed down in Emby (ie tall, skinny people). It's simply not reading the 16:9 flag for some reason.

[crusher11 1138]

Emby (incorrect):

 

VLC (correct):

[Guest asrequested]

Look again. It's following the display aspect ratio, not the original. If you transcode it, that will be removed. I don't know what player is in that app, but that's what appears to be happening.

[pwhodges 2028]

Well, the media info does say:

 

Width                                    : 720 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Original display aspect ratio            : 16:9

 

It's not immediately clear which of those ratios is meant to be chosen...

 

A little research shows me that DAR is from the container and ODAR is from the video stream header, that different players make different choices between them, and that it is probably faulty ripping that causes them to diverge.  So, not specifically an Emby error.

 

I also found this - the author of MediaInfo wrote (my emphasis):

 

"Actually, this problem should never happen. raw stream DAR should be always Container DAR. There is no reason to display 2 lines, simply because in theory container DAR is a copy, exact copy, of raw stream DAR.
So I display 2 values only when they are different, to warn the user there is a potential problem. There is no reason to bother people with 2 values when both values are same, as expected."

Edited December 29, 2019 by pwhodges

[crusher11 1138]

Well that is...weird and nonsensical.

 

It was ripped exactly the same way the rest of my collection was ripped though.