High Resolution/High Definition AMVS?

Sub0 · Post by **Sub0** » Wed May 30, 2007 11:31 pm

it deffiniteley doesn't sound better and that's probably where most of the compression goes to. Just make an mp3 with 64k mp3 and you'll get about the same compression.

I'll give you that it looks a tad bit better on pretty much every anime source, but that gets me into, yet again, my definition of anime fan, which I am not one of. I do not watch amvs for the video alone... in fact I rather prefer a nice ethereal experience.

I WILL switch over to 264 when I go HD but not before thankyou.

BasharOfTheAges · Post by **BasharOfTheAges** » Wed May 30, 2007 11:39 pm

I'm sorry, but what does audio have to do with it?

Scintilla · Post by **Scintilla** » Thu May 31, 2007 6:17 am

Sub0 wrote:it deffiniteley doesn't sound better and that's probably where most of the compression goes to. Just make an mp3 with 64k mp3 and you'll get about the same compression.

x264 is a video codec. It has nothing to do with how the audio sounds.

If you're talking about AAC (the audio codec probably most commonly used in MP4 files alongside x264), then I don't know what encodes you've been listening to to come to that conclusion. Examples?

Zero1 · Post by **Zero1** » Thu May 31, 2007 7:18 am

Again, LC-AAC has anywhere between 15-30% efficiency gain on MP3, so a 128kbps AAC will sound as good as 150-170kbps MP3. It also retains more high frequencies at lower bitrates, which is where some codecs fail eg the high frequencies get discarded and stuff like cymbols sound like shit.

HE-AAC doesn't sound great, but it's designed for 64kbps and lower, so you can't expect it to sound great; but if you encode a 64kbps HE-AAC and a 64kbps MP3, you will hear a world of difference in AAC's favour.

Seriously, I think you are just making up excuses now, there is no reason why not to switch. H.264 + AAC in MP4 is just about better in every way than XviD + MP3 in AVI.

ZephyrStar · Post by **ZephyrStar** » Thu May 31, 2007 8:16 am

Zero1 wrote:Again, LC-AAC has anywhere between 15-30% efficiency gain on MP3, so a 128kbps AAC will sound as good as 150-170kbps MP3. It also retains more high frequencies at lower bitrates, which is where some codecs fail eg the high frequencies get discarded and stuff like cymbols sound like shit.

HE-AAC doesn't sound great, but it's designed for 64kbps and lower, so you can't expect it to sound great; but if you encode a 64kbps HE-AAC and a 64kbps MP3, you will hear a world of difference in AAC's favour.

Seriously, I think you are just making up excuses now, there is no reason why not to switch. H.264 + AAC in MP4 is just about better in every way than XviD + MP3 in AVI.

Trust this guy, he knows what he's talking about :3

Gepetto · Post by **Gepetto** » Thu May 31, 2007 9:31 am

Since the audio encoding seems to have become part of the subject, I'll ask: where does AC3 stand in comparison to AAC?

Qyot27 · Post by **Qyot27** » Thu May 31, 2007 9:53 am

Gepetto wrote:Since the audio encoding seems to have become part of the subject, I'll ask: where does AC3 stand in comparison to AAC?

My gut reaction would be to assume AAC performs better because it's a newer standard, but I don't know how AAC would stack up against E-AC3 (Dolby Digital Plus). That said, I don't know of any E-AC3 encoding programs that would be available for use like the AC3 encoding function of the ffmpeg library.

Sub0 · Post by **Sub0** » Thu May 31, 2007 10:48 am

Scintilla wrote:
Sub0 wrote:it deffiniteley doesn't sound better and that's probably where most of the compression goes to. Just make an mp3 with 64k mp3 and you'll get about the same compression.
x264 is a video codec. It has nothing to do with how the audio sounds.

If you're talking about AAC (the audio codec probably most commonly used in MP4 files alongside x264), then I don't know what encodes you've been listening to to come to that conclusion. Examples?

just about every video, just pick one where you are provided an xvid and an mp4. Course I use earphones (rotten roommates...) it's not too noticable over speakers.

Sub0 · Post by **Sub0** » Thu May 31, 2007 10:55 am

ZephyrStar wrote:
Zero1 wrote:Again, LC-AAC has anywhere between 15-30% efficiency gain on MP3, so a 128kbps AAC will sound as good as 150-170kbps MP3. It also retains more high frequencies at lower bitrates, which is where some codecs fail eg the high frequencies get discarded and stuff like cymbols sound like shit.

HE-AAC doesn't sound great, but it's designed for 64kbps and lower, so you can't expect it to sound great; but if you encode a 64kbps HE-AAC and a 64kbps MP3, you will hear a world of difference in AAC's favour.

Seriously, I think you are just making up excuses now, there is no reason why not to switch. H.264 + AAC in MP4 is just about better in every way than XviD + MP3 in AVI.
Trust this guy, he knows what he's talking about :3

OK I didn't know the specifics (like you could change mp4 encodes) the only experience I personaly have with 264s is mkvs using realanime and with that there's not alot of wiggle room... I'll be sure to personaly try mp4box in the future than.

But thanks for the tips. It seems to me though, that, apparantly, ALOT of people just don't know how to encode mp4s than lol.

Org Profile · Post by **Otohiko** » Thu May 31, 2007 11:18 am

Better yet, grab the new AMVapp beta with Zarx' GUI. That thing is so easy to encode MP4s in it's not even funny.