[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Linphone-developers] Difference between video profiles "MP4V-ES" an
From: |
Andreas Pretzsch |
Subject: |
Re: [Linphone-developers] Difference between video profiles "MP4V-ES" and "H264" |
Date: |
Tue, 18 Dec 2007 16:20:55 +0100 |
User-agent: |
KMail/1.9.5 |
Ok, I'm back in sync, thanks. Mixed up the suffixes.
MP4V-ES refers to profiles like MPEG4-SP and -ASP, which are to some
extent compatible to H.263.
H264 refers to MPEG4/AVC.
Am Dienstag 18 Dezember 2007 15:51 schrieb Francois-Xavier KOWALSKI:
> mp4v-es is MPEG-4 Part 2. MPEG-4 Part 10 is AVC, which is the same as
> H.264. H.264 and MPEG-4 Part 2 are different & incompatible codecs.
>
> Andreas Pretzsch wrote:
> > I'm a bit puzzled regarding the difference between the video
> > codecs "MP4V-ES" and "H264".
> >
> > Both peers I have in use as reference
> > CounterPath EyeBeam (Windows SoftPhone)
> > Grandstream GXV-3000
> > support H.264 in different flavours, while linphone supports
> > MP4V-ES.
> >
> > To my current understanding, H.264 and MPEG4 AVC baseline profile
> > are comparable to a large extent.
> >
> > During negotiation, video codec selection fails because of
> > MP4V-ES != H264.
> > The question is, is it just a matter of naming or do I have to dig
> > deeper into this ?
--
carpe noctem engineering
Ingenieurbuero fuer Hard- & Software-Entwicklung Andreas Pretzsch
Dipl.-Ing. (FH) Andreas Pretzsch Tel. 0731/98588-800
Marlene-Dietrich-Strasse 5 Fax: 0731/98588-801
89231 Neu-Ulm email: address@hidden