Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > (HD) DVD, Blu-ray & (S)VCD > (HD) DVD & Blu-ray authoring

Reply
 
Thread Tools Search this Thread Display Modes
Old 13th June 2019, 03:14   #1  |  Link
WSC4
Registered User
 
Join Date: Jun 2011
Location: Melbourne, Australia
Posts: 33
AVCHD Maximum Bit Rate For DVDs

I have read when AVCHD is recorded on a DVD, the disc's maximum spin speed limits the data rate to 18Mb/s. However, this info was printed circa 2009.

http://www.avchd-info.org/format/index.html

https://vision.unipv.it/mst/mat/Sony_AVCHD.pdf <== AVCHD Specifications on page 7.

My Panasonic video camera records AVCHD into a BDMV folder and to this format:

Format: AVC
Format/Info: Advanced Video Codec
Format profile: High@L4.2
Format settings: CABAC / 2 Ref Frames
Bit rate mode: Variable
Bit rate: 23.8 Mb/s
Maximum bit rate: 25.0 Mb/s
Width: 1920 pixels
Height: 1080 pixels
Frame rate: 50.000 FPS
Colour space: YUV
Chroma subsampling: 4:2:0
Bit depth: 8 bits
Scan type: Progressive

Maximum Overall bit rate with audio: 28.0 Mb/s

My Pioneer Blu-ray player is about 5 years old, and I burnt the BDMV folder to a DVD and the Pioneer played it with no problems.

My question is, have they changed the AVCHD specifications in this day and age. Are later Blu-ray player able to read a DVD faster? How far can I push the maximum Overall bit rate?
WSC4 is offline   Reply With Quote
Old 13th June 2019, 07:43   #2  |  Link
Sharc
Registered User
 
Join Date: May 2006
Posts: 3,449
I don't think that the specs have changed. AVCHD on DVD medium is a subset of the broader AVCHD standard. Your blu-ray player probably complies with the full AVCHD standard (check the datasheet), however there is no warranty for playing DVD discs (4.7 or 9 GB) with AVCHD material which exceeds the "AVCHD on DVD media" specs. It may work in your case but it may fail in other cases (other DVD brand, other player). It's probably safer to burn your AVCHD material on BD25 discs. That's how I see it.
Sharc is offline   Reply With Quote
Old 14th June 2019, 10:31   #3  |  Link
Ghitulescu
Registered User
 
Ghitulescu's Avatar
 
Join Date: Mar 2009
Location: Germany
Posts: 5,617
It's not what AVCHD requires, but what the drive reading DVDs can.

Double standard drives (BD+DVD) can read higher bitrates from the same DVD than pure DVD drives, for they have been designed for a max. 18Mbps (double the DVD specs). BTW, these are the specs for pressed media, not for recordable ones, since the bitrate reqs for the latter are lower. Double sided recordables should consider a further reducing of the bitrate.

Now, that BDRs are so cheap and DVDRs with AVCHD pose some issues with some players, why insisting on BD5/BD9?
__________________
Born in the USB (not USA)
Ghitulescu is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

Forum Jump


All times are GMT +1. The time now is 18:16.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.