Author Topic: Sound In Only One Speaker  (Read 7964 times)

jdavidemux

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Re: Sound In Only One Speaker
« Reply #15 on: March 26, 2016, 07:35:25 PM »
You did not provide us with video sample with this audio issue?

Unable to upload due to copyright issues.

I prepared a mono track video, can you test this and let us know how it went?
monotest.mkv 5.3 Mb @ top right hand corner click download.

Not sure if I'm doing this correctly, what is monotest.mkv testing for?

I still think the OP should select the 3 channel mixer option and see if it produced a result.

Didn't see an option for the 3 channel mixer in audio filters/configure?(Avidemux 2.6.7)

Also the OP needs to select an audio recode option (in case its left at copy!).

It does work if you try.

Yep tried both AAC(Faac) and AAC(lav) etc..., for the audio output.


If it's of any help, here is the file info:

(Play Information Tab in PotPlayer)

[Video Information]
Video Codec:AVC1 - FFmpeg Decoder(h264)
Input type:AVC1(24 bits)
Input size:1280 x 720(1.78:1)
Output type:NV12(12 bits)
Output Size:1280 x 720(1.78:1)
Frame Rate:29.97
BitRate: Unknown

[Audio Information]
Audio Codec:AAC(0xaac0) - FFmpeg Decoder(aac)
Sample rate:48000 ->48000 samples / sec
Bit rate:16 ->16 bits / sample
Channels:2 ->2 channels
Bitrate: 192 kbps

(File Information Tab in PotPlayer)

  General
    Format : MPEG-4
    Format profile : Base Media
    Codec ID : isom
    File size : 475 MiB
    Duration : 15mn 34s
    Overall bit rate mode : Variable
    Overall bit rate : 4 260 Kbps
    Writing application : Lavf54.63.104
  Video #1
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : Main@L3.2
    Format settings, CABAC : Yes
    Format settings, ReFrames : 3 frames
    Format settings, GOP : M=4, N=15
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 15mn 34s
    Bit rate mode : Variable
    Bit rate : 4 059 Kbps
    Maximum bit rate : 6 000 Kbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Variable
    Frame rate : 29.970 fps
    Minimum frame rate : 14.986 fps
    Maximum frame rate : 29.971 fps
    Standard : NTSC
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.147
    Stream size : 452 MiB (95%)
  Audio #2
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 15mn 34s
    Bit rate mode : Constant
    Bit rate : 192 Kbps
    Channel count : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Stream size : 21.4 MiB (5%)
    Language : unk

Jan Gruuthuse

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Re: Sound In Only One Speaker
« Reply #16 on: March 27, 2016, 07:09:01 AM »
Unable to upload due to copyright issues.
Upload a similar video with the audio issue and without copyright issues .

Quote from: jdavidemux
Not sure if I'm doing this correctly, what is monotest.mkv testing for?
It's a small video with mono audio track, what speaker(s) do produce sound?

ps:- Use a free dropbox account, mega or similar webservice (free public access, without registration to download your uploaded video) thank you.[/quote]
« Last Edit: March 27, 2016, 08:12:42 AM by Jan Gruuthuse »

AQUAR

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Re: Sound In Only One Speaker
« Reply #17 on: March 27, 2016, 09:58:13 AM »
3 channel = remix box is ticked and mixer set to stereo + centre.

jdavidemux

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Re: Sound In Only One Speaker
« Reply #18 on: March 29, 2016, 03:24:59 AM »
Upload a similar video with the audio issue and without copyright issues .

I only have one video file with an audio issue.

It's a small video with mono audio track, what speaker(s) do produce sound?

Both the left and right speakers produce sound for the monotest video.

3 channel = remix box is ticked and mixer set to stereo + centre.

Yep, tried that option along with the other remix options with no luck.


Question about Avidemux:

In the media player I'm currently using(PotPlayer formaly known as KMPlayer), I found a option called "Swap Stereo Channels" which when clicked(for this video) switches the sound from the left speaker to the right speaker.

What I'm wondering is, is it possible(with Avidemux) to record the audio from the left speaker, switch the sound to the other speaker(with PotPlayer), record the audio from that speaker, and then somehow combine the two tracks into one track and then add the final combined audio track to the video?

Jan Gruuthuse

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Re: Sound In Only One Speaker
« Reply #19 on: March 29, 2016, 10:18:03 AM »
Seems like you have stereo track with audio on one channel only?

quick fix:
load video and save video with mono track, close video
load video with mono track and save video with stereo track

1) Load original video
Keep Output Format same as original video, with
Video Output:
 [copy]

Audio Output
 [AAC (lav)]
Filters -> Mixer:
[v] Remix
Mixer [Mono]

save video now as "mono" and close loaded video
--------------------------------------------------------

2)  Load saved video "mono"
Video Output:
 [copy]

Audio Output
 [AAC (lav)]
Filters -> Mixer:
[v] Remix
Mixer [Stereo]

save video now as "stereo" and close loaded video
--------------------------------------------------------

you should now have video "stereo" with stereo track and audio on 2 channels (still mono)
« Last Edit: March 29, 2016, 10:19:54 AM by Jan Gruuthuse »

jdavidemux

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Re: Sound In Only One Speaker
« Reply #20 on: March 30, 2016, 01:45:12 AM »
Seems like you have stereo track with audio on one channel only?

quick fix:
load video and save video with mono track, close video
load video with mono track and save video with stereo track

1) Load original video
Keep Output Format same as original video, with
Video Output:
 [copy]

Audio Output
 [AAC (lav)]
Filters -> Mixer:
[v] Remix
Mixer [Mono]

save video now as "mono" and close loaded video
--------------------------------------------------------

2)  Load saved video "mono"
Video Output:
 [copy]

Audio Output
 [AAC (lav)]
Filters -> Mixer:
[v] Remix
Mixer [Stereo]

save video now as "stereo" and close loaded video
--------------------------------------------------------

you should now have video "stereo" with stereo track and audio on 2 channels (still mono)


That worked. Appreciate the organized instructions as well. The video is now producing sound from both speakers.
Thanks Jan. And thanks to AQUAR for the additional helpful info.

AQUAR

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Re: Sound In Only One Speaker
« Reply #21 on: March 30, 2016, 09:02:16 AM »
I think xpmule also contributed to the eventual solution.


jdavidemux

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Re: Sound In Only One Speaker
« Reply #22 on: March 30, 2016, 07:58:26 PM »
I think xpmule also contributed to the eventual solution.

Yes, and thanks to xpmule.