Hi folks: this is my second question at this list and I wanted to mention that with answers and guides I got from 2 persons last time, I got a quite low rate stream in vorbis ogg, in about 5 minutes after reading what you wrote- Thanks! Well after that, I pointed my attention to the so called AAC, and after tweaking a bit I got my AAC stream up and connected to Icecast serv. I was a bit dissapointed about AAC, as I thought this was better encoding/compression than OGG. I alpologise if I express my selv badly about the technical detail, but the thing is that at low bitrates (lets say between 20 and 80 kbps) OGG sounds a lot better than AAC. As I still believe AAC is a really good one, maybe somebody can tell a little about where or how I can get the best result with it. (I can hear an anoying sound "behind" the good one, something like metal/glass chorus at low rates with aac). Thanks: CC
On Tue, 8 Mar 2005 22:43:52 -0200, ZONA <carlos@zonacharrua.com> wrote:> Hi folks: > > this is my second question at this list and I wanted to mention that with > answers and guides I got from 2 persons last time, I got a quite low rate > stream in vorbis ogg, in about 5 minutes after reading what you wrote- > Thanks! > Well after that, I pointed my attention to the so called AAC, and after > tweaking a bit I got my AAC stream up and connected to Icecast serv. > I was a bit dissapointed about AAC, as I thought this was better > encoding/compression than OGG. I alpologise if I express my selv badly about > the technical detail, but the thing is that at low bitrates (lets say > between 20 and 80 kbps) OGG sounds a lot better than AAC. > As I still believe AAC is a really good one, maybe somebody can tell a > little about where or how I can get the best result with it. > (I can hear an anoying sound "behind" the good one, something like > metal/glass chorus at low rates with aac).Ogg Vorbis is the format we recommend for both high quality or low bitrate. The downside of it is worse compatibility than mp3 - not everyone has a vorbis player, yet. AAC has compatibility problems too, and generally doesn't exceed vorbis in quality, so you're on the right track - use vorbis instead of AAC! Mike
On Wed, Mar 09, 2005 at 11:48:50AM +1100, Michael Smith wrote:> > Ogg Vorbis is the format we recommend for both high quality or low > bitrate. The downside of it is worse compatibility than mp3 - not > everyone has a vorbis player, yet. AAC has compatibility problems too, > and generally doesn't exceed vorbis in quality, so you're on the right > track - use vorbis instead of AAC!Although I appreciate the sentiment, it sounds as if you may actually be looking at the wrong AAC. AAC is a collection of related codecs all named AAC (in MPEG parlance, the different codecs are called 'profiles') and only one of them, the latest/greatest SBR variant, is actually any good at low bitrate. I'm guessing that the encoder you found doesn't actually support the AAC 'HE' profile, which is the profile you'd want to evaluate for streaming. The others don't generally compare well to Vorbis. Monty