Nero Digital

[boombastic]

Where can i find a detail description of the parameter of expert mode in dvd to mp4 trascoding?I tried the nerodigital site but the descriptio doesn't go into deep analisys...

[bond]

most options are the same for every mpeg-4 codec (divx5, xvid, 3ivx...) and therefore you will find them by using search or reading the stickies

what else do you want to know exactly?

[boombastic]

I must translate from italian so could be some errors...What do they mean?
QUALITY/SPEED TAB
motion search:EZPS (?)
CN predict (?)
Cut scene (?)
Fast ME (better enabled or not?)
Low/high noise (for a DVD low or nothing)?
High B-VOP quantization (?)
Max MV range (?)
Pshyco.visual quality (same in Divx?)
ADVANCED TAB
1/2-1/4 pixel(1/4 same of Qpel?)
spatial prediction (?)
predicted vop (?)
unlimited motion vectors (?)
4 motion vector per macroblock (same of VHQ in xvid?)
support for interlaced vop (only for interlaced source?)
bidirectional VOP (same of b-frames?)

[boombastic]

I just found this:

http://www.maneurope.com/guidanerodigital.htm

[babayaga]

Originally posted by boombastic
I must translate from italian so could be some errors...What do they mean?
QUALITY/SPEED TAB
motion search:EZPS (?)
CN predict (?)
Cut scene (?)
Fast ME (better enabled or not?)
Low/high noise (for a DVD low or nothing)?
High B-VOP quantization (?)
Max MV range (?)
Pshyco.visual quality (same in Divx?)
ADVANCED TAB
1/2-1/4 pixel(1/4 same of Qpel?)
spatial prediction (?)
predicted vop (?)
unlimited motion vectors (?)
4 motion vector per macroblock (same of VHQ in xvid?)
support for interlaced vop (only for interlaced source?)
bidirectional VOP (same of b-frames?)

motion search:EZPS
Motion estimation algorithm : Enhanced Predictive Zonal Search with a standard diamond search (EPZS) or a square diamond search (EPZS^2). The later is slightly better but slightly slower.

CN predict : fast prediction of not-coded macroblocs. Improves speed at the expense of the quality. Use it in slow motion encode or if the encoding speed is critical.

Cut scene : automatic detection of scene-cuts. Improves the quality but add key frames wherever needed (regardless of the GOP size).
The slider let you choose the detection threshold (lower values => less sensitive).

Fast ME : Fast motion estimation mode. Faster but with a lower quality.

Low/high noise : internal adaptive low-pass filter. High noise is for high noise source (slightly blurs), low for low noise source (slightly sharper). With a DVD source, pretty useless with a DVD source.

High B-VOP quantization : increase the quantisation scale of b-frames. Produce a slightly sharper picture at the expense of lower quality of b-frames.

Max MV range : maximum motion vector range. On standard action movies at standard resolutions (like 640x272), ±128 is a good value. Higher values may impact performance of some decoders.

Pshyco.visual quality : Low level, the psycho-visual importance of individual frames is taken into account to improve the perceived quality bits wherever possible. High level, the psycho-visual importance of individual macroblocs is also analysed. For standard movie encode, use High. (I don't know what DivX does).

1/2-1/4 pixel(1/4 same of Qpel?) : 1/2 = half-pixel motion estimation, 1/4 = quarter-pixel motion estimation.

spatial prediction : enable spatial prediction of intra macroblocs. Use it unless there is a compatibility issue with some weird decoder.

predicted vop : enable p-frames. Use it unless you want to produce a kind of mjpeg file (with a much better coding efficiency).

unlimited motion vectors : let the motion vectors point outside of the pictures. It improves the quality on the edges. Use it unless there is a compatibility issue with a decoder.

4 motion vector per macroblock (same of VHQ in xvid?) : enable 4 motion vectors per macrobloc mode. It improves the quality at the expense of a small speed loss. Not compatible with every decoder. If I recall correctly, it is activated in XviD with VHQ0 and above.

support for interlaced vop (only for interlaced source?) : enables the MPEG-4 interlace mode. Use it only for interlaced source. It's better to de-interlace first though.

bidirectional VOP (same of b-frames?) : enables b-frames.

I hope this is clear enough.