Networked Media Tank
[Audio] no sound on MPEG2 video - Printable Version

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+--- Thread: [Audio] no sound on MPEG2 video (/showthread.php?tid=55192)



[Audio] no sound on MPEG2 video - jorgengr - 09-25-2011 11:04 PM

Hi
This seams to be a well known old bug. I wonder if it will be fixed. Got a A-100 with f/w [31 Mar. 2011]. There are no sound from files from Danish public broadcast TV. Play well with mplayer and vlc. From mediainfo:

General
ID : 1001 (0x3E9)
Complete name : 2011-09-25- Untitled.mpg
Format : MPEG-TS
File size : 303 MiB
Duration : 9mn 56s
Overall bit rate mode : Variable
Overall bit rate : 4 257 Kbps

Video
ID : 111 (0x6F)
Menu ID : 1 (0x1)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Codec ID : 2
Duration : 9mn 55s
Bit rate mode : Variable
Bit rate : 3 788 Kbps
Maximum bit rate : 15.0 Mbps
Width : 704 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) : 0.374
Stream size : 269 MiB (89%)

Audio
ID : 121 (0x79)
Menu ID : 1 (0x1)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 9mn 56s
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -171ms
Stream size : 18.2 MiB (6%)
Language : Danish

Text
ID : 131 (0x83)-100
Menu ID : 1 (0x1)
Format : Teletext
Language : Danish

Brgds Jorgen


RE: [Audio] no sound on MPEG2 video - Netmask - 09-26-2011 06:30 AM

Have you tried demuxing the file and converting the audio track to say mp3 and then remuxing back together. MPEG Streamclip will demux and mux back together. You need either the Quicktime mpeg plugin from the Apple store at about $20 or install the free Quicktime Alternative v1.81

This program will also convert TS files to pure MPEG2 and a variety of other formats. Ignore any file error messages you might get when loading the TS file. ie Use anyway...


RE: [Audio] no sound on MPEG2 video - jorgengr - 09-26-2011 10:24 PM

(09-26-2011 06:30 AM)Netmask Wrote:  Have you tried demuxing the file and converting the audio track to say mp3 and then remuxing back together. MPEG Streamclip will demux and mux back together. You need either the Quicktime mpeg plugin from the Apple store at about $20 or install the free Quicktime Alternative v1.81

This program will also convert TS files to pure MPEG2 and a variety of other formats. Ignore any file error messages you might get when loading the TS file. ie Use anyway...

My mythtv-backend running on ubuntu server (with email, webserver, access point, internet gateway etc), generate a couple of these MPEG2 video files daily on a separate disk, from DVB-T. Now there is 1000 - 1500 files. They play fine on my mythtv-frontend. But not on the A-100. It is annoying that I have to go trought lots of conversion with video files, that I assume is faily strict within standards.

Can you point me to a linux complient recepie for converting the audio format?

Brgds