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rock-reed · 01-12-2007, 07:31 PM

Hey BitAudioVideo...

Just out of curiosity... What is the diff. between type1 and type2 DV?

Thanks!

Helix · 01-12-2007, 07:32 PM

There are two types of DV-AVI files:

* Type 1: The multiplexed Audio-Video is kept in its original multiplexing and saved together into the Video section of the AVI file
o Does not waste much space (audio is saved uncompressed, but even uncompressed audio is tiny compared to the video part of DV), but Windows applications based on the VfW API does not support it.
* Type 2: Like type 1, but audio is also saved as an additional audio stream into the file.
o Supported by VfW applications, at the price of little increased file size.

Type 1 is actually the newer of the two types. Microsoft made the "type" designations, and decided to name their older VfW-compatible version "Type 2", which only furthered confusion about the two types. In the late 1990s through early 2000s, most professional-level DV software, including non-linear editing programs, only supported Type 1. One notable exception was Adobe Premiere, which only supported Type 2. High-end FireWire controllers usually captured to Type 1 only, while "consumer" level controllers usually captured to Type 2 only. Software is and was available for converting Type 1 AVIs to Type 2, and vice-versa, but this is a time-consuming process.

Many current FireWire controllers still only capture to one or the other type. However, almost all current DV software supports both Type 1 and Type 2 editing and rendering, including Adobe Premiere. Thus, many of today's users are unaware of the fact that there are two types of DV AVI files. In any event, the debate continues as to which - Type 1 or Type 2 - if either, is better.

BitAudioVideo · 01-12-2007, 07:37 PM

.dv is two streams of data, audio and video, theres a bit of difference how the stream is named in the avi wrapper...

type1 requires a bit less overhead
type2 is compatable with Video for Windows (VfW)

type2 is moreoften compatable with external programs for me.

you could get the long version here http://www.microsoft.com/whdc/archive/dvavi.mspx

01-12-2007, 07:31 PM	#51
rock-reed Confirmed User Join Date: May 2005 Posts: 1,892	Hey BitAudioVideo... Just out of curiosity... What is the diff. between type1 and type2 DV? Thanks! __________________ --- Ethnic niche? Black-Asian-Latina ? Contact me and lets talk traffic. rockreed@ that thing they call the google mail When you E-mail Me, PLZZZZ make the Subject Title: >>>>>> GFY! So I do not lose you in Spam.

01-12-2007, 07:32 PM	#52
Helix Confirmed User Join Date: Feb 2002 Location: Michigan Posts: 5,998	There are two types of DV-AVI files: * Type 1: The multiplexed Audio-Video is kept in its original multiplexing and saved together into the Video section of the AVI file o Does not waste much space (audio is saved uncompressed, but even uncompressed audio is tiny compared to the video part of DV), but Windows applications based on the VfW API does not support it. * Type 2: Like type 1, but audio is also saved as an additional audio stream into the file. o Supported by VfW applications, at the price of little increased file size. Type 1 is actually the newer of the two types. Microsoft made the "type" designations, and decided to name their older VfW-compatible version "Type 2", which only furthered confusion about the two types. In the late 1990s through early 2000s, most professional-level DV software, including non-linear editing programs, only supported Type 1. One notable exception was Adobe Premiere, which only supported Type 2. High-end FireWire controllers usually captured to Type 1 only, while "consumer" level controllers usually captured to Type 2 only. Software is and was available for converting Type 1 AVIs to Type 2, and vice-versa, but this is a time-consuming process. Many current FireWire controllers still only capture to one or the other type. However, almost all current DV software supports both Type 1 and Type 2 editing and rendering, including Adobe Premiere. Thus, many of today's users are unaware of the fact that there are two types of DV AVI files. In any event, the debate continues as to which - Type 1 or Type 2 - if either, is better. __________________ Free jscott !!! Free OneHungLo !!! Free Baddog !!!

01-12-2007, 07:37 PM	#53
BitAudioVideo Confirmed User Join Date: Jul 2005 Location: USA, Georgia Posts: 1,246	.dv is two streams of data, audio and video, theres a bit of difference how the stream is named in the avi wrapper... type1 requires a bit less overhead type2 is compatable with Video for Windows (VfW) type2 is moreoften compatable with external programs for me. you could get the long version here http://www.microsoft.com/whdc/archive/dvavi.mspx __________________ Hi-Quality Encoding - Bulk Orders - On Time! http://bitaudiovideo.com icq 50476697 - aim n3r0xXx