Audio Noise through exporting a MPEG 2 ts file using the latest version of Videoredo tv suite 5

ctvenea

New member
I have the following video ts file and when I want to export the file without commercials I saw that a sequence of the exported file is with an audio noise instead of voices.
I am using Windows 10. I saw that many people claims about this issue. What is happening with the Vidoeredo tvsuite 5 ? This files I have is by recording using my pc tv tuner but in the past I had no such problems with videoredo.
The strange thing is that some other file is working flawless and the file was made with the same pc tv tuner.
Please help me using again with the same pleasure the videoredo software.



Type of files that encountered video redo with this problem:
Size : 0.668 GB
Duration : 00:25:14.04
Mux type : TS Stream
TS mux rate : 3.810 Mbps
Video: Encoding : MPEG2
VideoStreamID : x1019
Frame rate : 25.00 fps
Encoding size : 720 x 576
Aspect ratio : 16:9
Header bit rate : 3.050 Mbps
VBV buffer : 156 KBytes
Profile : Main@Main
Progressive : Prog or Int
Chroma : 4:2:0
Bit rate : 3.145 Mbps
Field order : Top field first
Audio Stream: 1 (Primary) Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
Language : rum
PID : x101A
PES Stream Id : xC0
Bit rate : 128 Kbps
Sampling rate : 48000




Video file with no problem:


Size : 2.689 GB
Duration : 02:42:29.06
Mux type : TS Stream
TS mux rate : 2.242 Mbps
Video: Encoding : MPEG2
VideoStreamID : x1325
Frame rate : 25.00 fps
Encoding size : 720 x 576
Display dimensions : 720 x 576
Aspect ratio : 16:9
Header bit rate : 15.000 Mbps
VBV buffer : 224 KBytes
Profile : Main@Main
Progressive : Prog or Int
Chroma : 4:2:0
Bit rate : 1.934 Mbps
Field order : Top field first
Audio Stream: 1 (Primary) Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
Language : rum
PID : x1326
PES Stream Id : xC0
Bit rate : 192 Kbps
Sampling rate : 48000
Sample size : 16 bits





Sample size : 16 bits
Audio Stream: 2 Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
Language : eng
PID : x101B
PES Stream Id : xC0
Bit rate : 128 Kbps
Sampling rate : 48000
Sample size : 16 bits
 

Dan203

Senior Developer
Staff member
Can you please open the same file in MediaInfo and post the info here so we can see if we're picking up the audio format correctly? I've seen this happen with files that combine MPEG-2 video and AAC audio. We don't support that combo so our code will mistakenly try to open the AAC audio as MPEG Layer 2 instead.
 

ctvenea

New member
General
ID : 1 (0x1)
Format : MPEG-TS
File size : 668 MiB
Duration : 25 min 14 s
Overall bit rate mode : Variable
Overall bit rate : 3 541 kb/s

Video
ID : 4121 (0x1019)
Menu ID : 412 (0x19C)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=5, N=15
Format settings, picture structure : Frame
Codec ID : 2
Duration : 25 min 14 s
Bit rate mode : Constant
Bit rate : 3 107 kb/s
Maximum bit rate : 3 050 kb/s
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.300
Time code of first frame : 25:14:04:20
Time code source : Group of pictures header
Stream size : 629 MiB (88%)

Audio #1
ID : 4122 (0x101A)
Menu ID : 412 (0x19C)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 25 min 14 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Frame rate : 41.667 FPS (1152 SPF)
Compression mode : Lossy
Delay relative to video : -104 ms
Stream size : 19.7 MiB (4%)
Language : Romanian

Audio #2
ID : 4123 (0x101B)
Menu ID : 412 (0x19C)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 25 min 14 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Frame rate : 41.667 FPS (1152 SPF)
Compression mode : Lossy
Delay relative to video : -104 ms
Stream size : 19.7 MiB (4%)
Language : English
 

Dan203

Senior Developer
Staff member
Hmmm... none of that should be an issue. Do you hear the noise when playing the original file in the VideoReDo UI? Or only after you output the file? If only after output then what profile are you saving to?
 

ctvenea

New member
I hear the noise after I output the file. The profile is the same: Transport Stream. I used for a long time the version 5-1-1-719b of Videoredo tv suite and I exported the files using ts profile with no problem. As I said I use a lot videoredo in removing commercials from my recorded tv broadcasts with my pc tv tuner. I don't understand why some files are exported flawless with the latest version of videoredo tv suite and others not.
 

Dan203

Senior Developer
Staff member
That is strange. Nothing about that video should cause issues. If you open the output file in VideoReDo do you hear the noise? Or only in your playback program?
 

ctvenea

New member
When I open the output file I hear the noise in videoredo and also in other playback programs that I tried: vlc, leavo, Windows Media Player. It's certain that I hear the noise when I open the output file in videoredo or in any other playback program because the outputing process from videoredo distroied the audio.
 

ctvenea

New member
I did what you said and surprisingly the trimmed 100MB file is flawless. The audio is like in the original file with voices and no audio sounds.

What does it means?
 

Dan203

Senior Developer
Staff member
It could mean that there is a sudden change in the audio format somewhere in the stream and that's what's causing the audio recode to fail. In the original test were you cutting the file as well? Or just converting it? It's possible that the audio change is happening right around the first cut point and that's why there is the error in the output.

If that's the case you may be able to use Trim & Copy to fix the file. Try to use it to trim off the start of the file to about the first cut point. (using start at MB) Then open the resulting file and edit and convert. VideoReDo assumes that all the audio in the file matches the first few frames. So if you can get it to pick up the audio you want as the first few frames then it should work correctly.
 

ctvenea

New member
Yes, in the original test I cut the commercial and then I outputted the file without commercial. The audio change is not happening right around the first cut point but it is happening near the middle of the outputted file and near the end the voices came back into the audio.
 

ctvenea

New member
It doesn't work as I said, the outputing process from videoredo distroied the audio. The file exported from videoredo has the audio destoried.
 

Dan203

Senior Developer
Staff member
OK so if you output the trimmed file then the audio is distorted? If so then please upload the trimmed file as originally requests so we can figure out why this is happening.
 

ctvenea

New member
I uploaded to you trimmed from original file with voices the trimmed file with the audio noise . The broadcast is a cartoon I recorded for my child and the first audio is romanian and the second audio is english. It starts well but the noise is present.
The trimmed file name is: "trimmed.ts " and the thread number is: "#1 Audio Noise".
 

ctvenea

New member
Now I have redone the the uploading procedure. I've sent the e-mail to you after I reuploaded the file.
Thanks!
 
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