Video appear 4 audio tracks

leonardo-borges wrote on 8/28/2017, 1:17 PM

My source video has two audio tracks, but in VP15 appear 4... Why?

The video is capture in Nvidia ShadowPlay (with config to 2 audio tracks, one for desktop audio and one for Mic)

The Media info text report:

Geral
Nome completo : D:\Youtube\Captures\Desktop\Desktop 08.28.2017 - 14.14.18.02.mp4
Formato : MPEG-4
Perfil do Formato : Base Media / Version 2
ID do Codec : mp42 (isom/mp42)
Tamanho do arquivo : 3.13 GiB
Duração : 9 min 7s
Taxa de Bits Total : 49.2 Mb/s
Data de gravação : 2017
Data da codificação : UTC 2017-08-28 17:23:26
Data rotulada : UTC 2017-08-28 17:23:26

Vídeo
ID : 1
Formato : AVC
Formato/Informações : Advanced Video Codec
Perfil do Formato : High@L4.2
Conf do Formato, CABAC : Sim
Conf do Formato, Quadros de Ref. : 1 quadro
Format_Settings_GOP : M=1, N=30
Modo de Multiplexação : Container profile=High@1.3
ID do Codec : avc1
ID do Codec/Informações : Advanced Video Coding
Duração : 9 min 7s
Source_Duration/String : 9 min 7s
Taxa de bits : 48.8 Mb/s
Largura : 1 920 pixels
Altura : 1 080 pixels
Proporção da imagem : 16:9
Modo de taxa de quadros : Variável
Taxa de quadros : 60.000 FPS
Taxa de quadros mínima : 55.693 FPS
Taxa de quadros máxima : 63.649 FPS
Padrão : PAL
ColorSpace : YUV
ChromaSubsampling/String : 4:2:0
BitDepth/String : 8 bits
Tipo de Scan : Progressivo
Bits/(Pixels*Quadros) : 0.392
Tamanho da Faixa : 3.11 GiB (99%)
Source_StreamSize/String : 3.11 GiB (99%)
Título : VideoHandle
Data da codificação : UTC 2017-08-28 17:23:26
Data rotulada : UTC 2017-08-28 17:23:26
colour_range : Limited
colour_primaries : BT.601 NTSC
transfer_characteristics : BT.470 System M
matrix_coefficients : BT.601
mdhd_Duration : 547386

Áudio #1
ID : 2
Formato : AAC
Formato/Informações : Advanced Audio Codec
Perfil do Formato : LC
ID do Codec : 40
Duração : 9 min 7s
Source_Duration/String : 9 min 7s
Modo da taxa de bits : Constante
Taxa de bits : 198 kb/s
Taxa de bits nominal : 96.0 kb/s
Nº de canais : 2 canais
Posições dos canais : Front: L R
Taxa de amostragem : 48.0 kHz
Taxa de quadros : 46.875 FPS (1024 SPF)
Tamanho da Faixa : 12.9 MiB (0%)
Source_StreamSize/String : 12.9 MiB (0%)
Título : SoundHandle / System sounds
Data da codificação : UTC 2017-08-28 17:23:26
Data rotulada : UTC 2017-08-28 17:23:26
mdhd_Duration : 547259

Áudio #2
ID : 3
Formato : AAC
Formato/Informações : Advanced Audio Codec
Perfil do Formato : LC
ID do Codec : 40
Duração : 9 min 7s
Source_Duration/String : 9 min 7s
Modo da taxa de bits : Constante
Taxa de bits : 192 kb/s
Taxa de bits nominal : 96.0 kb/s
Nº de canais : 2 canais
Posições dos canais : Front: L R
Taxa de amostragem : 48.0 kHz
Taxa de quadros : 46.875 FPS (1024 SPF)
Tamanho da Faixa : 12.7 MiB (0%)
Source_StreamSize/String : 12.7 MiB (0%)
Título : SoundHandle / Microphone
Data da codificação : UTC 2017-08-28 17:23:26
Data rotulada : UTC 2017-08-28 17:23:26
mdhd_Duration : 547259

Vegas file properties:

General
Name: Desktop 08.28.2017 - 14.14.18.02.mp4
Folder: D:\Youtube\Captures\Desktop
Type: Intel HEVC
Size: 3,29 GB (3.364.728.217 bytes)
Created: segunda-feira, 28 de agosto de 2017, 14:14:19
Modified: segunda-feira, 28 de agosto de 2017, 14:23:27
Accessed: segunda-feira, 28 de agosto de 2017, 14:14:19
Attributes: Archive

Streams
Video: 00:09:07,380, 59,940 fps progressive, 1920x1080x32, AVC
Audio: 00:09:07,220, 48.000 Hz; Mono, AAC

ACID information
ACID chunk: no
Stretch chunk: no
Stretch list: no
Stretch info2: no
Beat markers: no
Detected beats: no

Other metadata
Regions/markers: no
Command markers: no

Media manager
Media tags: no

Plug-In
Name: so4compoundplug.dll
Folder: C:\Program Files\VEGAS\VEGAS Pro 15.0\FileIO Plug-Ins\so4compoundplug
Format: AVC
Version: Version 1.0 (Build 8532)
Company: MAGIX Computer Products Intl. Co.

Comments

leonardo-borges wrote on 8/28/2017, 1:27 PM

Vegas shows that all my recorded videos are Mono Audio but all are stereo, I'm sure

Marco. wrote on 8/28/2017, 1:41 PM

According to Media Info there are two audio streams each containing two channels of audio. So you actually have a four channel mono signal.

NickHope wrote on 8/28/2017, 1:42 PM

Thank for the detailed information. I agree that VP15 appears to be decoding the audio incorrectly.

I suggest you submit a support request at https://support2.magix.com/customer/en/vegas/form , including as much detailed information about the problem as you can.

I think it would help Support if you could provide a link to a sample file.

NickHope wrote on 8/28/2017, 1:45 PM

According to Media Info there are two audio streams each containing two channels of audio. So you actually have a four channel mono signal.

I think it should decode as 2 x stereo tracks, if the MediaInfo report is to be believed. No?

leonardo-borges wrote on 8/28/2017, 1:45 PM

According to Media Info there are two audio streams each containing two channels of audio. So you actually have a four channel mono signal.

In Premiere appear two audio tracks in stereo 😢

Former user wrote on 8/28/2017, 1:54 PM

If you look at the waveforms you can see they are all different.

rraud wrote on 8/28/2017, 2:25 PM

Don't know about VP-15 (or 14 for that matter), but other earlier versions had the option to select "Open stereo as dual mono" in 'Options> Preferences> General'. So if a lav and boom mic (or a camera mic & console feed) were recorded L & R, they would look somewhat different.

NickHope wrote on 8/29/2017, 6:27 AM

Try disabling so4compoundplug.dll

NickHope wrote on 8/29/2017, 12:37 PM

@leonardo-borges Glad this solved the issue (as you told us on another thread). The developers have asked for a sample so they can look into the issue, so if you have anything you can share on Google Drive, Dropbox, mega.nz etc. it would be appreciated.

leonardo-borges wrote on 8/30/2017, 9:20 AM

@leonardo-borges Glad this solved the issue (as you told us on another thread). The developers have asked for a sample so they can look into the issue, so if you have anything you can share on Google Drive, Dropbox, mega.nz etc. it would be appreciated.

a Sample of the video?

set wrote on 8/30/2017, 9:31 AM

@leonardo-borges Glad this solved the issue (as you told us on another thread). The developers have asked for a sample so they can look into the issue, so if you have anything you can share on Google Drive, Dropbox, mega.nz etc. it would be appreciated.

a Sample of the video?

The small record of yours that showing the issue..., just like you described, rerecord short with Nvidia ShadowPlay (with config to 2 audio tracks, one for desktop audio and one for Mic). Upload the MP4 record file to online cloud drive like Google Drive, Dropbox, WeTransfer, Mega.nz etc...

We will forward the video to developers for testing.

leonardo-borges wrote on 8/30/2017, 10:44 AM

@leonardo-borges Glad this solved the issue (as you told us on another thread). The developers have asked for a sample so they can look into the issue, so if you have anything you can share on Google Drive, Dropbox, mega.nz etc. it would be appreciated.

a Sample of the video?

The small record of yours that showing the issue..., just like you described, rerecord short with Nvidia ShadowPlay (with config to 2 audio tracks, one for desktop audio and one for Mic). Upload the MP4 record file to online cloud drive like Google Drive, Dropbox, WeTransfer, Mega.nz etc...

We will forward the video to developers for testing.

It's done https://drive.google.com/drive/folders/0BxoSJXRdG60AX1N3R0x0RkJSemc Anything else I can do to help?

set wrote on 8/30/2017, 11:07 AM

Thanks... have been forwarded to developers.

BartBear wrote on 10/9/2017, 5:41 AM

Yes it should be "fixed" as default settings - I had the same problem and was searching for it for a while - I got a solution on YouTube - You need to open Preferences with Shift key pressed (to have "Internal" tab) and there in Internal tab go to "searching box" called "Show only prefs containing" and type in it:

so4

it shows only 3 options then - you need to switch "Enable So4 compound Reader for AVC/M2TS" from TRUE to FALSE and that is it - next time importing should be correct in one stereo track.

NickHope wrote on 2/20/2018, 10:37 AM

This is fixed in VEGAS Pro 15 build 311. "Stereo tracks from certain file types which were improperly imported as multiple mono tracks are now properly imported to stereo tracks".

aRandomKaz wrote on 5/5/2021, 2:43 PM

any way I can fix this in Vegas Pro 14? this is driving me nuts.

rraud wrote on 5/5/2021, 4:57 PM

There is a "Import stereo as dual mono" setting in the "Options> Preferences> General" menu, which may help.
When enabled, interleaved L/R stereo events are placed on two tracks.