The Traders' Den  

  The Traders' Den > Where we go to learn ..... > Technobabble
 

Notices

Technobabble Post your general Need for Help questions here.
Lossy or Lossless?
Moderators

Reply
 
Thread Tools
  #1  
Old 2006-06-17, 07:01 PM
obcd's Avatar
obcd obcd is offline
linux powered
44.62 GB/2.08 TB/47.67
 
Join Date: Jun 2005
Location: france
video compression

It has come to my attention that most people forget at least one thing when seeding dvds... the mpeg compression software. you might not think it's important but it is completely since every one uses a different algorythm to compress the videos.

Just like there are several encoders for mp3 material and the best one still is lame encoder, there are several mpeg video ones, the best software one being Cinema Craft Encoder, which is, unfortunately, a bit expensive.

A lot of people use dvdshrink and co, which is a REALLY big mistake, since that software does not encode the video, but transcodes it, which means it won't matter what the frame displays, it will encode it to fit it's specified bitrate, even if the quality is bad at the end. REAL encoders analyzes the pictures and encode properly. how can that be ? just look ... use dvdshrink and 'encode' a video en 1hour, do the same using a real encoding software, it'll be at least 4 hours.

so, this is just a plea to people transfering shows ... PLEASE ... specify which encoders and settings you used.

should anyone need any tutorial to try to use better quality software, go to the most known site about all that ... http://www.doom9.org.
__________________
polom
Reply With Quote Reply with Nested Quotes
  #2  
Old 2006-06-18, 09:47 PM
yeltzin_4
0.00 KB/0.00 KB/---
 
Re: video compression

Quote:
Originally Posted by obcd
Just like there are several encoders for mp3 material and the best one still is lame encoder, there are several mpeg video ones, the best software one being Cinema Craft Encoder, which is, unfortunately, a bit expensive.
Great post!

Specifying the minimum, average (this is the most important figure) and max bitrates is crucial in determining whether I download a torrent. Also, if you use Variable Bit Rate, specify the number of passes that were made.

For people who can't afford the high price of the full Cinemecraft Encoder, there is a scaled down version called CCE Basic. Basically, it's uses the encoder engine of the full version, except it restricts you to 2 passes in VBR. And it's a bargain at around $60
Reply With Quote Reply with Nested Quotes
  #3  
Old 2006-06-18, 10:49 PM
xequence's Avatar
xequence xequence is offline
34.48 GB/65.23 GB/1.89
 
Join Date: May 2006
Location: Canada
Re: video compression

Quote:
since that software does not encode the video, but transcodes it
Um... Transcoding is just when you encode something that has already been encoded.

Like WAV - MP3 - MP3, or WAV - Vorbis - MP3, or MPEG2 - XViD - h.264.
Reply With Quote Reply with Nested Quotes
  #4  
Old 2006-06-19, 05:58 AM
obcd's Avatar
obcd obcd is offline
linux powered
44.62 GB/2.08 TB/47.67
 
Join Date: Jun 2005
Location: france
Re: video compression

yep, and transcoding is bad
because the algorythm does not care about the source picture but only cares about the parameters it was given in the first place.
while encocding,actuallly 'looks' at the source
__________________
polom
Reply With Quote Reply with Nested Quotes
  #5  
Old 2006-06-19, 07:23 AM
xequence's Avatar
xequence xequence is offline
34.48 GB/65.23 GB/1.89
 
Join Date: May 2006
Location: Canada
Re: video compression

Heh. I wasnt aware there was a difference between encoding and transcoding... But thats probably because it might be different in audio and video, as I know more about audio then video.

But still, I always thought transcoding was just encoding something that was already encoded.

Like LAME is an encoder. You encode a PCM WAVE. Then transcoding would be to take another encoder (Vorbis, AAC, MPC, or LAME MP3 again, etc) and encode it again.
Reply With Quote Reply with Nested Quotes
Reply

The Traders' Den > Where we go to learn ..... > Technobabble

Similar Threads
Thread Forum Replies Last Post
? Compression Question ? - sixstringmartinsix Technobabble 4 2006-08-01 09:33 AM
lossy or high compression MD? - rhinowing Lossy or Lossless? 4 2006-03-07 04:37 PM
video compression - is it possible...and how? - mcwanks Technobabble 7 2006-03-06 12:10 PM
FM compression or .mp3 ? - alchemy71085 Lossy or Lossless? 19 2005-10-07 10:26 PM
Unrealistic Flac compression - Punkishlyevil Technobabble 32 2005-01-08 02:21 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forums


All times are GMT -5. The time now is 07:08 PM.


Powered by: vBulletin, Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright ©2004 - , TheTradersDen.org - All Rights Reserved - Hosted at QuickPacket
no new posts