Closing GOPs

RobertR · 25th March 2003, 11:43

Hello!
Sorry if this has been already discussed somewhere here but i was unable to find it.

Is there a way to close GOPs of mpeg-2 file without reencoding it? (sometimes my Philips DVD player forgets to display subs in totally random way and i think that this might be somehow related to open GOPs)

Thanks in advance

frank · 1st April 2003, 16:46

No way.

htc10825 · 2nd April 2003, 15:08

You should buy a new dvd player... forget the philips!

But I think the problem with subs is not the fault of "opened" GOPs. "Closed GOP" has only sense for editing, nothing more.

RobertR · 2nd April 2003, 15:24

Quote:

Originally posted by htc10825
You should buy a new dvd player... forget the philips!

Despite those subs problems this Philips 743 DVD is very good in my opinion. Of course YMMV

Quote:

But I think the problem with subs is not the fault of "opened" GOPs. "Closed GOP" has only sense for editing, nothing more.

The biggest problem is probably peek bitrate but since subs are screwing at random points someone gave me a hint that this might be somehow related to open GOPs. I'll check this while doing backup of some dvd...
On a second thought.. i might be better off buying myself a dvd-writer

Thanks to all who answered and have a good day

htc10825 · 4th April 2003, 18:58

All Philips players have problems if the peak value of bitrate of the svcd is higher than 27xx kbps. "Opened" GOP will help the encoder to save bits, so if you close all GOPs the bitrate will goes a little higher(not much), but you'll get a worse pic quality at same avr. bitrate or higher bitrate at the same quality... this will make your player even more mad...
With another dvd player your life will easier...

25th March 2003, 11:43	#1 \| Link
RobertR Registered User Join Date: Mar 2003 Location: Poland Posts: 98	Closing GOPs Hello! Sorry if this has been already discussed somewhere here but i was unable to find it. Is there a way to close GOPs of mpeg-2 file without reencoding it? (sometimes my Philips DVD player forgets to display subs in totally random way and i think that this might be somehow related to open GOPs) Thanks in advance __________________ NameLess, the Jedi aka NLJ

1st April 2003, 16:46	#2 \| Link
frank Banned Join Date: Oct 2001 Location: https://t.me/pump_upp Posts: 811	No way.

2nd April 2003, 15:08	#3 \| Link
htc10825 Gladiator Join Date: Mar 2002 Posts: 552	You should buy a new dvd player... forget the philips! But I think the problem with subs is not the fault of "opened" GOPs. "Closed GOP" has only sense for editing, nothing more.

4th April 2003, 18:58	#5 \| Link
htc10825 Gladiator Join Date: Mar 2002 Posts: 552	All Philips players have problems if the peak value of bitrate of the svcd is higher than 27xx kbps. "Opened" GOP will help the encoder to save bits, so if you close all GOPs the bitrate will goes a little higher(not much), but you'll get a worse pic quality at same avr. bitrate or higher bitrate at the same quality... this will make your player even more mad... With another dvd player your life will easier...