No sound with a .flv video

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No sound with a .flv video

Post by klmalek on Wed May 14, 2014 3:37 am

Hello,

I have a .mp4 video that plays with audio just fine. However, after editing the video with the software 'Articulate video encoder' the video is saved as an .flv file, at that point the video plays with no audio. I am running Windows 7 and have KLCP version: 10.4.0 full.

Any help is appreciated.

Thanks,
Karen

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Re: No sound with a .flv video

Post by Admin on Wed May 14, 2014 8:29 am

You can check with the MediaInfo tool if the file contains any audio track.

It looks like a problem with that video encoder. Why are you converting to FLV? The MP4 format is more widely supported.

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Re: No sound with a .flv video

Post by klmalek on Wed May 14, 2014 9:46 am

To check for an audio track what am I looking for specifically?

That specific software automatically converts all video to flv when published because they are meant to be embedded into power point presentations that are later used for online learning courses.

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Re: No sound with a .flv video

Post by klmalek on Wed May 14, 2014 9:49 am

When I click on the media info for that flv video this is what I see:

Audio
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 2
Codec ID/Hint : MP3
Duration : 58s 95ms
Bit rate mode : Constant
Bit rate : 48.0 Kbps
Channel(s) : 1 channel
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 375 KiB (9%)
Writing library : LAME3.97


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Re: No sound with a .flv video

Post by Admin on Thu May 15, 2014 1:45 am

MP4 files can also be embedded into PowerPoint presentations. In fact, you can link to pretty much any type of video file.

Can you upload a sample FLV file for me? Then I can test if the file is valid.
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Re: No sound with a .flv video

Post by klmalek on Thu May 15, 2014 5:03 am

File is uploaded at: sendspace.com 7iokqp

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Re: No sound with a .flv video

Post by Admin on Thu May 15, 2014 6:36 am

It contains an audio track and also plays normally. However, the audio just contains silence.

This is not really a playback problem. I can't help you with this. You have to ask the makers of the conversion software why the audio is silent.

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Re: No sound with a .flv video

Post by klmalek on Thu May 15, 2014 6:39 am

Ok, thanks for your help.

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Re: No sound with a .flv video

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