DCP's Audio out of sync

Anything and everything to do with DCP-o-matic.
Sam
Posts: 9
Joined: Tue Jul 23, 2024 11:41 pm

Re: DCP's Audio out of sync

Post by Sam »

Update: I just made a DCP from a Blu-Ray (not a DVD) and the sync is perfect.
Kewl
Posts: 96
Joined: Mon Jan 17, 2022 5:13 pm
Location: Montreal, Canada

Re: DCP's Audio out of sync

Post by Kewl »

Sam wrote: Thu Jul 25, 2024 5:23 pm Is it odd that there are 5 different audio streams and only one video stream?
No, that's pretty common to have numerous languages or creators audio comments on DVDs and BDs. I'm more surprised by all the frame rates for video and audio.

Video:
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 29.970 (30000/1001) FPS

Audio:
Frame rate : 31.250 FPS (1536 SPF)

I would look into this as probable cause for the sync problem. Is this a "commercial" DVD or a homemade one?
Kewl
Posts: 96
Joined: Mon Jan 17, 2022 5:13 pm
Location: Montreal, Canada

Re: DCP's Audio out of sync

Post by Kewl »

Sam wrote: Thu Jul 25, 2024 9:02 pm Update: I just made a DCP from a Blu-Ray (not a DVD) and the sync is perfect.
Out of curiosity, what are Mediainfo specs?
Sam
Posts: 9
Joined: Tue Jul 23, 2024 11:41 pm

Re: DCP's Audio out of sync

Post by Sam »

Kewl wrote: Fri Jul 26, 2024 2:18 pm
Sam wrote: Thu Jul 25, 2024 5:23 pm Is it odd that there are 5 different audio streams and only one video stream?
No, that's pretty common to have numerous languages or creators audio comments on DVDs and BDs. I'm more surprised by all the frame rates for video and audio.

Video:
Frame rate : 23.976 (23976/1000) FPS
Original frame rate : 29.970 (30000/1001) FPS

Audio:
Frame rate : 31.250 FPS (1536 SPF)

I would look into this as probable cause for the sync problem. Is this a "commercial" DVD or a homemade one?
Hi Kewl,

It is a commercial DVD.
Sam
Posts: 9
Joined: Tue Jul 23, 2024 11:41 pm

Re: DCP's Audio out of sync

Post by Sam »

Kewl wrote: Fri Jul 26, 2024 2:20 pm
Sam wrote: Thu Jul 25, 2024 9:02 pm Update: I just made a DCP from a Blu-Ray (not a DVD) and the sync is perfect.
Out of curiosity, what are Mediainfo specs?
Here are the specs from Mediainfo on the MKV file of the Blu-Ray that turned out great when I made it into a DCP:

General
Unique ID : 185135816805100166906048559592032569469 (0x8B47DC808A0BDEFF7A7866A84132087D)
Complete name : C:\Users\sb15\Videos\MKV Files\Fantastic Planet_t00.mkv
Format : Matroska
Format version : Version 2
File size : 18.2 GiB
Duration : 1 h 12 min
Overall bit rate mode : Variable
Overall bit rate : 36.0 Mb/s
Frame rate : 23.976 FPS
Movie name : Fantastic Planet
Encoded date : 2024-07-25 18:05:19 UTC
Writing application : MakeMKV v1.17.7 win(x64-release)
Writing library : libmakemkv v1.17.7 (1.3.10/1.5.2) win(x64-release)
Cover : Yes
Attachments : cover.jpg

Video
ID : 1
ID in the original source medium : 4113 (0x1011)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Format settings, Slice count : 4 slices per frame
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 12 min
Bit rate mode : Variable
Bit rate : 34.9 Mb/s
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.701
Time code of first frame : 00:59:38:00
Stream size : 17.6 GiB (97%)
Language : English
Default : No
Forced : No
Original source medium : Blu-ray

Audio
ID : 2
ID in the original source medium : 4352 (0x1100)
Format : PCM
Format settings : Little / Signed
Codec ID : A_PCM/INT/LIT
Duration : 1 h 12 min
Bit rate mode : Constant
Bit rate : 1 152 kb/s
Channel(s) : 1 channel
Sampling rate : 48.0 kHz
Frame rate : 30.000 FPS (1600 SPF)
Bit depth : 24 bits
Stream size : 595 MiB (3%)
Title : Mono
Language : French
Default : Yes
Forced : No
Original source medium : Blu-ray

Text
ID : 3
ID in the original source medium : 4608 (0x1200)
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 9 min
Bit rate : 24.7 kb/s
Frame rate : 0.186 FPS
Count of elements : 778
Stream size : 12.3 MiB (0%)
Language : English
Default : Yes
Forced : No
Original source medium : Blu-ray

Menu
00:00:00.000 : en:Chapter 01
00:01:39.724 : en:Chapter 02
00:07:48.801 : en:Chapter 03
00:11:45.871 : en:Chapter 04
00:15:07.406 : en:Chapter 05
00:17:52.237 : en:Chapter 06
00:19:42.848 : en:Chapter 07
00:21:36.878 : en:Chapter 08
00:23:52.180 : en:Chapter 09
00:26:28.795 : en:Chapter 10
00:31:51.492 : en:Chapter 11
00:34:07.045 : en:Chapter 12
00:38:37.273 : en:Chapter 13
00:42:42.351 : en:Chapter 14
00:45:42.573 : en:Chapter 15
00:52:01.284 : en:Chapter 16
00:54:59.838 : en:Chapter 17
00:58:57.075 : en:Chapter 18
01:04:09.679 : en:Chapter 19
01:10:09.622 : en:Chapter 20
carl
Site Admin
Posts: 2481
Joined: Thu Nov 14, 2013 2:53 pm

Re: DCP's Audio out of sync

Post by carl »

These files are classic examples of the type that will trigger various bugs in the 2.16.x series. Do you also have metadata/log from a project that went wrong with 2.17.19?