transcoding question ?

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CygnusX1
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transcoding question ?

Postby CygnusX1 » 07 Jan 2010 20:54

OK, so I have a stream from my Panasonic IP webcam that I can access from VLC by connecting to..

rtsp:// 192. 168.1.253 /nphMpeg4/g726-320x240

I cannot get sound from this stream on my Blackberry, presumably because it does not understand the g726 audio codec. But VLC can play the entire stream, SO..

Can I transcode just the audio portion to mp4a (leaving the mp4v untouched) and send it out of VLC? If so, what would the code be?

Thanx

Rémi Denis-Courmont
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Re: transcoding question ?

Postby Rémi Denis-Courmont » 07 Jan 2010 22:04

Current VLC versions cannot encode to MPEG-4 Audio (decoding is OK) due to software licensing incompatibilities.
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CygnusX1
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Re: transcoding question ?

Postby CygnusX1 » 08 Jan 2010 14:22

I see..

What about one of these audio codecs?

AAC-LC
AAC+
eAAC+
AMR-NB

Supposedly my Blackberry supports those.

Rémi Denis-Courmont
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Re: transcoding question ?

Postby Rémi Denis-Courmont » 09 Jan 2010 11:33

AAC is just another name for MPEG-4 Audio.
AMR is not supported at all (decoding and encoding) due to code licensing incompatibilities.
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yuer1108
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Re: transcoding question ?

Postby yuer1108 » 09 Jan 2010 14:07

I saw H264+MP4A in encode menu of vlc stream. is mp4a really broken in R103?

and I remember a hardware decoder test result before. there is bad audio issue with vlc086's mp4a. but it is OK for vlc1.0.x's mp4a.

so I think R1.0.x fix some mp4a bug as always. Am I right?

CygnusX1
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Re: transcoding question ?

Postby CygnusX1 » 11 Jan 2010 17:58

So I am gathering that previous versions of VLC support encoding mp4a. Is that correct?


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