Playback & audio sync issues only with one set of files

I’m having playback issues with a certain set of BluRay Remuxes. Once or twice during the 23 mins of playback of an episode, the screen will go black for a second. And occasionally the audio will go completely out of sync - particularly when I rewind or fast forward.

Tested on two different Apple TVs and televisions - one is a 2021 AppleTV running Infuse 7.6.4, the other is a 2022 AppleTV running the latest 7.7 beta. The problem occurs on both.

Diagnostics YQDKA

Media info:
General
Format : Matroska
Format version : Version 4
File size : 4.74 GiB
Duration : 23 min 51 s
Overall bit rate mode : Variable
Overall bit rate : 28.5 Mb/s
Encoded date : UTC 2022-11-13 10:27:26
Writing application : mkvmerge v66.0.0 (‘Josie’) 64-bit
Writing library : libebml v1.4.2 + libmatroska v1.6.4
IMDB : tt0106004
TMDB : tv/3452
TVDB : 77811

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 23 min 49 s
Bit rate mode : Variable
Bit rate : 28.0 Mb/s
Maximum bit rate : 40.0 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) : 0.563
Stream size : 4.63 GiB (98%)
Writing library : x264 core 152 r2851bm ba24899
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=24 / lookahead_threads=2 / sliced_threads=0 / slices=4 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=1 / constrained_intra=0 / bframes=3 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=1 / weightp=1 / keyint=24 / keyint_min=1 / scenecut=40 / intra_refresh=0 / rc_lookahead=24 / rc=abr / mbtree=1 / bitrate=28000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=40000 / vbv_bufsize=30000 / nal_hrd=vbr / filler=0 / ip_ratio=1.40 / aq=1:1.00
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio #1
ID : 2
Format : FLAC
Format/Info : Free Lossless Audio Codec
Codec ID : A_FLAC
Duration : 23 min 48 s
Bit rate mode : Variable
Bit rate : 365 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 11.719 FPS (4096 SPF)
Bit depth : 16 bits
Compression mode : Lossless
Stream size : 62.2 MiB (1%)
Title : FLAC 2.0
Writing library : libFLAC 1.3.3 (UTC 2019-08-04)
Language : English
Default : Yes
Forced : No

Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 23 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 : 43.7 MiB (1%)
Title : Commentary by co-creators/producers Peter Casey & David Lee
Language : English
Service kind : Complete Main
Default : No
Forced : No

Text #1
ID : 4
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Duration : 23 min 31 s
Bit rate : 98 b/s
Count of elements : 439
Stream size : 17.0 KiB (0%)
Title : English
Language : English
Default : No
Forced : No

Text #2
ID : 5
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 23 min 40 s
Bit rate : 60.1 kb/s
Count of elements : 634
Stream size : 10.2 MiB (0%)
Title : English (SDH)
Language : English
Default : No
Forced : No

Menu
00:00:00.000 : en:Chapter 1
00:10:24.624 : en:Chapter 2
00:18:29.942 : en:Chapter 3
00:23:15.019 : en:Chapter 4

Is it by any chance repeatable at the same time marks?

1 Like

No - when it happens, I’ve been rewinding to check whether it happens again, but it always plays perfectly. And if I exit playback and then resume playing, it also plays fine. And the sync problems happen very randomly, which again are immediately fixed by exiting and resuming playback.

I’ve now experienced the same issues with these files on iOS as well (Infuse 7.7 beta, iOS 17).

Any chance you would be able to send in one of the problematic files?

https://firecore.com/upload

1 Like

Done. The video has my screen name in the filename.

I experienced a glitch at approx 04:10 when first watching this file, which now I cannot reproduce.

1 Like