Topic: SVPCode audio not synced

Whenever I transcode a video, the audio seems to be behind. The issue seems to pop up with longer videos. Shoter videos seem to be okay. Should I change a specific settings to prevent this?

  • MAG79
  • SVP developer
  • Offline

Re: SVPCode audio not synced

I think it depends on video file.
Can you check mediainfo of source and result file?
Look to video stream length and audio stream length.

3 Reply by mewthree1 (edited by mewthree1 22-01-2019 22:34:00)

Re: SVPCode audio not synced

General
Unique ID                      : 54821207515427308459692835613898375720 (0x293E2E362CC3CE2D5324C83CE9F30228)
Complete name                  : F:\Movies\Ready Player One (2018).mkv
Format                         : Matroska
Format version                 : Version 4
File size                      : 40.8 GiB
Duration                       : 2 h 19 min
Overall bit rate mode          : Variable
Overall bit rate               : 41.7 Mb/s
Encoded date                   : UTC 2018-07-10 00:36:00
Writing application            : mkvmerge v23.0.0 (master: 2421163 / deflate: e4384ad) [X86_64]
Writing library                : libebml v1.3.6 + libmatroska v1.4.9

Video
ID                             : 1
Format                         : HEVC
Format/Info                    : High Efficiency Video Coding
Commercial name                : HDR10
Format profile                 : Main 10@L5.1@High
Codec ID                       : V_MPEGH/ISO/HEVC
Duration                       : 2 h 19 min
Width                          : 3 840 pixels
Height                         : 1 606 pixels
Display aspect ratio           : 2.40:1
Frame rate mode                : Constant
Frame rate                     : 23.976 (24000/1001) FPS
Color space                    : YUV
Chroma subsampling             : 4:2:0 (Type 2)
Bit depth                      : 10 bits
Writing library                : x265 2.8+40-0106f9f2f867:[Linux][GCC 7.3.0][64 bit] 10bit
Default                        : Yes
Forced                         : No

Audio #1
ID                             : 2
Format                         : MLP FBA 16-ch
Format/Info                    : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name                : Dolby TrueHD with Dolby Atmos
Codec ID                       : A_TRUEHD
Duration                       : 2 h 19 min
Bit rate mode                  : Variable
Maximum bit rate               : 5 004 kb/s
Channel(s)                     : 8 channels
Channel layout                 : L R C LFE Ls Rs Lb Rb
Sampling rate                  : 48.0 kHz
Frame rate                     : 1 200.000 FPS (40 SPF)

I trimmed out some things, but the duration for both video and audio look to be identical in the original file

4 Reply by Kaiji (edited by Kaiji 25-01-2019 00:12:07)

  • Thanks: 1

Re: SVPCode audio not synced

Same problem in this thread, with no solution.

Still hoping there'll be a workaround or fix as I would use this feature a lot if it worked properly.

  • MAG79
  • SVP developer
  • Offline

Re: SVPCode audio not synced

Last SVP update must fix audio de-sync.
Check it please.

Re: SVPCode audio not synced

Will do. I'll report back as soon as it finishes.

Re: SVPCode audio not synced

i just tested a file and it works fantastically! Now I need to figure out how to either keep the HDR or make it so it maps to SDR. Since it doesn't seem like SVPCode keeps HDR data or maps it to HDR,  would it be possible to use a different software to transcode it to SDR and then use SVPCode for the interpolation?