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crusher11

Not recognising aspect ratio on some files?

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crusher11

I have an x264 aac file that's 720x576 and flagged as 4:3, but it seems tall and skinny on playback. Looks fine in Emby Web, VLC, etc. I tested by putting a finger on the TV screen at the edge of the picture and then playing back something I knew was 4:3, and it played wider than where my finger was by an inch or so.

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Luke

If you lower the in app quality setting to force transcoding, how does that compare?

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crusher11

That widens it out to where it should be.

 

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Luke

Ok so what that means when direct playing is that the LG video player is not rendering it correctly. All we can really do is force transcoding to correct it.

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crusher11

But why is it not honoring the aspect ratio flag for this file, when it does for other files?

MediaInfo:

 

General
Format                                   : Matroska
Format version                           : Version 4
File size                                : 1.37 GiB
Duration                                 : 1 h 39 min
Overall bit rate                         : 1 979 kb/s
Encoded date                             : UTC 2020-06-11 14:09:25
Writing application                      : mkvmerge v45.0.0 ('Heaven in Pennies') 64-bit
Writing library                          : libebml v1.3.10 + libmatroska v1.5.2

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 4 frames
Codec ID                                 : V_MPEG4/ISO/AVC
Duration                                 : 1 h 39 min
Bit rate                                 : 1 848 kb/s
Width                                    : 720 pixels
Height                                   : 576 pixels
Display aspect ratio                     : 4:3
Original display aspect ratio            : 5:4
Frame rate mode                          : Constant
Frame rate                               : 25.000 FPS
Standard                                 : PAL
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.178
Stream size                              : 1.28 GiB (93%)
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=6 / lookahead_threads=1 / 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=25 / 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
Default                                  : Yes
Forced                                   : No

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : A_AAC-2
Duration                                 : 1 h 39 min
Bit rate                                 : 129 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 91.3 MiB (7%)
Title                                    : AAC 2.0
Language                                 : English
Default                                  : Yes
Forced                                   : No

 

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Luke

This is something that is handled by the LG video player so I can't really answer that. I can report this to LG though.

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crusher11

If I'm going to have to re-encode this and any similar files, it'd be nice to know what I need to do differently.

 

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cayars

Don't know how far you've gotten with this @crusher11 but maybe instead of doing re-encodes you could try just remuxing them.

If that works you could "convert" your media rather quickly.

Lots of tools that can help you try to remux the files but XMedia recode is a great program to use. https://www.xmedia-recode.de/

great program, lousy website

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