HC Encoding speed with DVD rebuilder

[techreactor]

An excerpt from the HC manual :

Encoding speed

Encoding speed is highly dependent of:

o

Complexity of the video material

o

Speed of your system: CPU, cache size and memory speed

o

Availability of CPU extensions

A fast system will encode a 2 hour movie (DVD backup) in approx. 2.5 hours, 1.5 hours for the first
pass and 1 hour for the second pass with *PROFILE BEST.
Encoding (interlaced) DV video might take longer to encode.


I have a fast system(SSE2, 512MB RAM), then why does it take so long, I tried with Normal(Default) profile and it took 6 hrs ??, I donno what will happen with "Best" profile.

Any clues ???

[UncasMS]

how are we supposed to have clues when your system specs are completely unknow (*fast system* doent mean much) and when the length of the movie is more than important, when filters slow down the process, when picking an 64bit idct will need more time than default or xvid idct and so on

[techreactor]

how are we supposed to have clues when your system specs are completely unknow (*fast system* doent mean much) and when the length of the movie is more than important, when filters slow down the process, when picking an 64bit idct will need more time than default or xvid idct and so on

I understand....Win XP prof 32 bit

Pentium M, 1.6 Ghz, 512 MB RAM.

Movie length was 2 hrs 36 min

I dont have xvid codec installed so the default idct would be used.(is xvid recommended???)

No filters were used since it was my first test and wanted to evaluate the performance.

[soup]

Benbryant suggested it in one of his posts to me but I don't know if that would apply to the latest HC version.

[techreactor]

Benbryant suggested it in one of his posts to me but I don't know if that would apply to the latest HC version.

Are you talking in context to xvid codec installation ???

[UncasMS]

xvid as an mpeg-4 codec has nothing to do with one special IDCT by the name xvid, which dgdecode adresses - so dont get confused

the pro version lets you change the idct (and xvid was fastest on my system), dont know about the free version

use this forums search engine and look for idct
among the results you should find a posting from me here in the rebuilder forum, which contains speed differences due to different idcts used - just in case you might want to take a look

next thing: hank315 was talking about a *fast system* and 2hrs+
when saying that he definitely had some 3ghz+ in mind and not half of it
moreover a movie length of 2hrs36min (sw3?) is a little longer than the ordinary movie

so all in all encoding will take a couple of hours on your system because we are not talking about a simple transcoding here but fully encoding each frame of the whole film completely

this takes time but i definitely prefer the overall quality of an encoder and thus time doesnt really matter

furthermore you can run the conversion over night or during working hours and have the tool shut down your pc after the conversion

[soup]

I was but I think UncasMS just explained everthing way better than I ever could.

[jeo]

UncasMS just explained everthing way better than ...

...than we!

...allll-ways.....is our Warm Brother...see his avatar!

[techreactor]

xvid as an mpeg-4 codec has nothing to do with one special IDCT by the name xvid, which dgdecode adresses - so dont get confused

the pro version lets you change the idct (and xvid was fastest on my system), dont know about the free version

use this forums search engine and look for idct
among the results you should find a posting from me here in the rebuilder forum, which contains speed differences due to different idcts used - just in case you might want to take a look

Thanks UncasMS

next thing: hank315 was talking about a *fast system* and 2hrs+
when saying that he definitely had some 3ghz+ in mind and not half of it
moreover a movie length of 2hrs36min (sw3?) is a little longer than the ordinary movie

Its a local movie and not a hollywood one, so more length. Hmmm and I thought I had a decent system , anyways no upgrades for now.

so all in all encoding will take a couple of hours on your system because we are not talking about a simple transcoding here but fully encoding each frame of the whole film completely

this takes time but i definitely prefer the overall quality of an encoder and thus time doesnt really matter

furthermore you can run the conversion over night or during working hours and have the tool shut down your pc after the conversion

I understand that and totally appreciate the quality factor but when the time spent is not more than 2.5-3.5 hrs for a 2 hrs movie and thats my personal opinion and preference

But thanks for all the insight.

[blutach]

@TR

Spare a thought for us guys that take 8-10 hours to encode that movie length

Regards

[techreactor]

@TR

Spare a thought for us guys that take 8-10 hours to encode that movie length

Regards

lol, sorry guys, I didnt intend to be mean and I appreciate your concern/taste for quality.

[techreactor]

the pro version lets you change the idct (and xvid was fastest on my system), dont know about the free version

Yeah! the free one has only one option MPEG2source("source", idct=7)

Can someone pls explain to me how this works and will it benefit upon enabling this.

Thanks.

[techreactor]

Yeah! the free one has only one option MPEG2source("source", idct=7)

Can someone pls explain to me how this works and will it benefit upon enabling this.

Thanks.

Okay found the answer in DGdecode manual

idct: 0 to 7 (default: 0)

• iDCT Algorithm.
  - 0: Use value specified by DGIndex (iDCTs 6 and 7 unavailable in DGIndex)
  - 1: 32-bit MMX
  - 2: 32-bit SSEMMX
  - 3: 64-bit SSE2MMX
  - 4: 32-bit Floating Point
  - 5: 64-bit IEEE-1180 Reference
  - 6: 32-bit SSEMMX (Skal)
  - 7: 32-bit Simple MMX (XviD)

[ajp]

I understand....Win XP prof 32 bit

Pentium M, 1.6 Ghz, 512 MB RAM.

Movie length was 2 hrs 36 min

I dont have xvid codec installed so the default idct would be used.(is xvid recommended???)

No filters were used since it was my first test and wanted to evaluate the performance.

I don'tthink you have a fast system. I have an AMD 3200+, 1gb of ram Win XP PRO and it takes on the best setting with HC 255 minutes.

[UncasMS]

.allll-ways.....is our Warm Brother...

i can only hope the "M" was a mistake ^_~

btw: the dgdecode idct are the NEW ones now
the old order looked like this:

DGDecode 1.10
-------------
1. 32 Bit MMX
2. 32 Bit SSE/MMX
3. 64 Bit Floating Point
4. 64 Bit IEEE-1180 Ref
5. 32 Bit SSE2/MMX
6. 32 Bit SSE/MMX (Skal)
7. 32 Bit Simple MMX (XviD)