NTSC DVDs out of sync
Posted: Fri Feb 10, 2023 4:29 pm
I've noticed a couple of NTSC DVDs rips we've used recently to make clips from have been out of sync in DCP-o-Matic and resulting DCPs. These are ripped using MakeMKV and playback in sync on other players.
Setting Override detected video framerate to 23.976 (from 29.97) in advance settings will put the video and sound back in sync.
Copying below the mediainfo output for one of the files:
Complete name :
Format : Matroska
Format version : Version 2
File size : 6.68 GiB
Duration : 2 h 9 min
Overall bit rate mode : Variable
Overall bit rate : 7 402 kb/s
Encoded date : UTC 2023-02-09 14:14:00
Writing application : MakeMKV v1.17.2 win(x64-release)
Writing library : libmakemkv v1.17.2 (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=12
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 2 h 9 min
Bit rate mode : Variable
Bit rate : 7 199 kb/s
Maximum bit rate : 9 800 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.869
Stream size : 6.49 GiB (97%)
Language : English
Default : No
Forced : No
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
Format settings : Dolby Surround
Codec ID : A_AC3
Duration : 2 h 9 min
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
Stream size : 177 MiB (3%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Original source medium : DVD-Video
Text
ID : 3
ID in the original source medium : 189 (0xBD)32 (0x20)
Format : VobSub
Codec ID : S_VOBSUB
Codec ID/Info : Picture based subtitle format used on DVDs
Duration : 2 h 8 min
Bit rate : 5 979 b/s
Count of elements : 2545
Stream size : 5.50 MiB (0%)
Language : English
Default : Yes
Forced : No
Original source medium : DVD-Video
Setting Override detected video framerate to 23.976 (from 29.97) in advance settings will put the video and sound back in sync.
Copying below the mediainfo output for one of the files:
Complete name :
Format : Matroska
Format version : Version 2
File size : 6.68 GiB
Duration : 2 h 9 min
Overall bit rate mode : Variable
Overall bit rate : 7 402 kb/s
Encoded date : UTC 2023-02-09 14:14:00
Writing application : MakeMKV v1.17.2 win(x64-release)
Writing library : libmakemkv v1.17.2 (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=12
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 2 h 9 min
Bit rate mode : Variable
Bit rate : 7 199 kb/s
Maximum bit rate : 9 800 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.869
Stream size : 6.49 GiB (97%)
Language : English
Default : No
Forced : No
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
Format settings : Dolby Surround
Codec ID : A_AC3
Duration : 2 h 9 min
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
Stream size : 177 MiB (3%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Original source medium : DVD-Video
Text
ID : 3
ID in the original source medium : 189 (0xBD)32 (0x20)
Format : VobSub
Codec ID : S_VOBSUB
Codec ID/Info : Picture based subtitle format used on DVDs
Duration : 2 h 8 min
Bit rate : 5 979 b/s
Count of elements : 2545
Stream size : 5.50 MiB (0%)
Language : English
Default : Yes
Forced : No
Original source medium : DVD-Video