Bigger resolution? psychovisuals?

[Scorpius]

I need your opinion on this one:

If movies bits/(pixel*frame) is more or much more than 0.270 should I use 640*xxx resololution as usual or should I raise resolution? I know that when u use 640*xxx resolution playback will not be resizefiltered (if u put monitor/tv resolution to 640*480) but bigger resolution means more details...

For exaple some movies bits/(pixel*frame) is 0.318 with 640*272 resolution. But if u raise resolution to 704*304 bits/(pixel*frame) is still 0.273!!

-So the question is should I always use as big resolution as possible or should I always use maximum 640*xxx? :confused:


I also heard that u can encode movie without any resizing filter. U just crop the black bars. well I need to encode this movie fantasia2000. It is 71min long and with ac3 5.1 it fits on 1 cd with these specs: bits/(pixel*frame) 0.212, bitrate 975 kBit/s resolution 576*304. OR should I make 2 cd version with full resolution (no resizing filter used) with bits/(pixel*frame)still is 0.362 ? :confused:

also third question: :p
I haven't tried psychovisuals yet but some said that it helps on animated movies. True? :confused:

[Acaila]

Why are you using the AC3 audio? It's a cartoon, and cartoons don't use such excellent accoustics as to justify using the AC3. Just transcode the AC3 to Ogg Vorbis at quality 2 or so to get a nice filesize decrease.
With this you could probably use 640 on one CD with great quality. I always try to use as high a resolution as possible for my encodes, and for a movie of 71 mins it should be quite doable.

[Scorpius]

Originally posted by Acaila
Why are you using the AC3 audio? It's a cartoon, and cartoons don't use such excellent accoustics as to justify using the AC3. Just transcode the AC3 to Ogg Vorbis at quality 2 or so to get a nice filesize decrease.


I totally disagree with you with your ac3 opinion. First of all fantasia2000 has incredible ac3 accoustics. Its not just cartoon, its a cartoon where picture is transcribed with beautiful multichannel music. Anyway this perticular movie isn't the the case. Ac3 sound is superior against mp3/ogg or whatever *BS*. HiFi has been my hobby for 5 years so I think I know what i'm dealing here. :)

Anyway, thank you for your answer about resolution! From now on I add as big rasolution as possible :p

[Krack]

I totally agree with you; Fantasia have incredible sound and you must keep the grateast quality as possible. :)

[SometimesWarrior]

Originally posted by Scorpius
Ac3 sound is superior against mp3/ogg or whatever *BS*.
While it's true that a transcoded file will always(*) sound worse than the original, I think it should be pointed out that the MP3 and Vorbis audio formats are now capable of producing better quality (from an uncompressed source) than the AC3 format. But you're absolutely right, for a film like Fantasia 2000, if you have the equipment to play back Dolby Digital, keeping it in AC3 5.1 is the way to go :)

If you don't have the decoding hardware, though, transcoding to Vorbis -q4 or -q5 would be a good idea. -q2 does not save enough bits over the higher -q values to justify its lower quality, IMHO.

-SometimesWarrior

(*)In very special cases, some people prefer the sound of a transcoded MP3 file over the higher-quality original because the MP3 softens certain sharp attacks, making them more "pleasing" to the ear. This is only for rare and exceptional cases, though, and technically still is a degradation in audio quality.

[JimmyBarnes]

Originally posted by Scorpius
I need your opinion on this one:

If movies bits/(pixel*frame) is more or much more than 0.270 should I use 640*xxx resololution as usual or should I raise resolution? I know that when u use 640*xxx resolution playback will not be resizefiltered (if u put monitor/tv resolution to 640*480) but bigger resolution means more details...

For exaple some movies bits/(pixel*frame) is 0.318 with 640*272 resolution. But if u raise resolution to 704*304 bits/(pixel*frame) is still 0.273!!

-So the question is should I always use as big resolution as possible or should I always use maximum 640*xxx? :confused:

Really depends on how compressible the movie is. It's true a large resolution retains more detail but if the resultant Bits Per Pixel is too low (bigger resolution means lower BPP) for the particular movie, the overall result will be lousy video.

Get Gordian Knot 0.23b or a slightly earlier version and look under the Help, PLEASE READ THIS ALSO section.

JB