Hello


Still trying to get to the bottom of why some of my purchased DVDS playback so badly, slow jerky and awful ??

yet other when ripped playback as if they were in a normal DVD player

Albeit DVD quality is so bad anyway on todays HD Screens

but why have some of my DVDs I have purchased been mastered so they playback so bad, jeryky frame rates etc


They play back bad in VLC player and also on my zidoo HD3000 1000 media player, yet other DVDs playback as expected




So below are two DVD info files, the first one plays back as expected and the second plays back jerky and blurry

so lets see what the difference is ??


Good DVD RIP
----------------


General
Unique ID : 330230707062913201276033788375575516925 (0xF8701EE81637FC03C53E422BA02756FD)
Complete name : H:\Video\JNM_BCHI\B1_t00.mkv
Format : Matroska
Format version : Version 2
File size : 1.31 GiB
Duration : 28 min 51 s
Overall bit rate mode : Variable
Overall bit rate : 6 518 kb/s
Encoded date : UTC 2023-03-12 15:27:06
Writing application : MakeMKV v1.17.3 win(x64-release)
Writing library : libmakemkv v1.17.3 (1.3.10/1.5.2) win(x64-release)

Video
ID : 1
ID in the original source medium : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : CustomMatrix / BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Format settings, picture structure : Frame
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 28 min 51 s
Bit rate mode : Variable
Bit rate : 6 000 kb/s
Maximum bit rate : 8 000 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 4:3
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 : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.579
Time code of first frame : 00:00:00:00
Time code source : Group of pictures header
GOP, Open/Closed : Closed
Stream size : 1.21 GiB (92%)
Language : English
Default : No
Forced : No
Original source medium : DVD-Video

Audio #1
ID : 2
ID in the original source medium : 189 (0xBD)128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 28 min 51 s
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 52.8 MiB (4%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Original source medium : DVD-Video

Audio #2
ID : 3
ID in the original source medium : 189 (0xBD)129 (0x81)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 28 min 51 s
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 52.8 MiB (4%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : No
Forced : No
Original source medium : DVD-Video







BAD DVD RIP
---------------

eneral
Unique ID : 170242542811870396692302720590706653811 (0x80138566E00BFE43687C3D0673143A73)
Complete name : H:\Video\Man About The House S1\Man About The HouseS01E01.mkv
Format : Matroska
Format version : Version 2
File size : 996 MiB
Duration : 24 min 53 s
Overall bit rate mode : Constant
Overall bit rate : 5 597 kb/s
Encoded date : UTC 2023-03-12 14:56:37
Writing application : MakeMKV v1.17.3 win(x64-release)
Writing library : libmakemkv v1.17.3 (1.3.10/1.5.2) win(x64-release)

Video
ID : 1
ID in the original source medium : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=2, N=5
Format settings, picture structure : Field
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 24 min 53 s
Bit rate mode : Constant
Bit rate : 5 400 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 4:3
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 : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.521
Time code of first frame : 09:59:59:20
Time code source : Group of pictures header
GOP, Open/Closed : Open
Stream size : 961 MiB (96%)
Language : English
Default : No
Forced : No
Color primaries : BT.601 PAL
Transfer characteristics : BT.470 System B/G
Matrix coefficients : BT.470 System B/G
Original source medium : DVD-Video

Audio
ID : 2
ID in the original source medium : 189 (0xBD)128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 24 min 53 s
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Delay relative to video : 24 ms
Stream size : 34.2 MiB (3%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Original source medium : DVD-Video

Menu
00:00:00.000 : en:Chapter 02
00:06:05.400 : en:Chapter 03
00:12:45.200 : en:Chapter 04
00:15:07.800 : en:Chapter 05
00:21:51.000 : en:Chapter 06





So what is the difference as to why one would playback bad and the other DVD to playback fine ??


the main thing I have noticed is



is the good one is Format settings, picture structure : Frame

and the bad one is

Format settings, picture structure : Field




could this be why the software and hardware players playback differently ??


also could the bad Format settings, picture structure : Field, remuxed to frame if this is the reason



why would the DVD original mastering use frame / field ???

what is the difference??


thanks for any info, as this is really bugging me as I have many purchased DVDs that playback real bad when ripped ??



Hope i am getting close to the problems


regards