DVB-S 480x576 resolution

[geohei]

Hi.

I do some recording from DVB-S. Some channels use the rare, but standard DVB-S resolution 480x576, which is fine for DVB-S, but not for DVD standards. The solution is to patch the header to 720x576, which is no problem for DVD authoring software, but I wonder if this is the best solution, since the resolution itself is not changed.

The video material remains 480 horizontal instead of 720. Is it not possible despite the fact that the header is correct, that the DVD player doesn't "like" the 480 horizontal pixels?

In other words, does the DVD player only care about the header information and doesn't check the real (horizontal) resolution?

Many thanks!

[TBoneit]

isn't 480 by 576 PAL standard SVCD as is?

You could try it on DVD by Patching the header using DVDPatcher to DVD standard, Then load into DVD Authoring S/W, I use TMPGEnc VD Author w/AC3 Plug-in, Unpatch header back to original res. Edit, Author Burn Test. I know My Players support DVB (NTSC) 544 by 480 this way And I recall doing several SVCD (NTSC & PAL) onto a DVD, 480 by 480 and 480 by 576, And they played in my Apex... My Sony only does NTSC so I didn't even try there.

Good Luck

[geohei]

isn't 480 by 576 PAL standard SVCD as is?

Correct, but I would like to make a DVD out of it, not a SCVD.

You could try it on DVD by Patching the header using DVDPatcher to DVD standard, Then load into DVD Authoring S/W, I use TMPGEnc VD Author w/AC3 Plug-in, Unpatch header back to original res. Edit, Author Burn Test. I know My Players support DVB (NTSC) 544 by 480 this way And I recall doing several SVCD (NTSC & PAL) onto a DVD, 480 by 480 and 480 by 576, And they played in my Apex... My Sony only does NTSC so I didn't even try there.

I know that most players take 480x576 without any problem (even without patching), but my question was whether the DVD player just cares about the header, or also analyses somehow the real horizontal resolution, which might then (480 pixels) create a problem to the player?

Thanks.

[lordsmurf]

Re-encode it to 352x576.
BE VERY CAREFUL RE-ENCODING DVB STREAMS !!!

I just dealt with this nightmare. I used DVD2AVI to frameserve to TMPGENC. Direct MPEG decoding by ALL ENCODERS (CCE, MC, PC, TMP, etc) resulted in bad artifacts (motion or sync errors).

Also, do not use WOMBLE products to edit. Yikes! Use VIDEOREDO, and even then, only AFTER the re-encodes.

That will land you DVD-spec source to author from.

[SatStorm]

I suggest just the opposite of what lordsmurf suggest.

Mpeg-Vcr is the perfect program to edit European DVB /s sources of any framesize. I use this program since summer 2001 with not a single issue!

geohei, you are European, so you are PAL.

When I have to deal with 544/528/480 x 576 DVB sources, I prepare them with womble mpeg-vcr (I cut out what I don't wish to re-encode) and then I load them to dvd2avi and frameserve them to TMPGenc plus. I re-encode them to 352 x 576 which is a valid DVD framesize.
The alternative is to load your mpeg2 to virtualdub mpeg2, resize to 352 x 576, add filters (on most cases filters are neccessary for DVB transmissions, like msu_deblocking for example) and frameserve to TMPGenc plus (or any other encoder).

[geohei]

@SatStorm
- I won't touch WOMBLE again. I spent hours and it kept on crashing on me (3.14 IIRC).
- VirtualDub -> TMPGEnc is fine, but this is reencoding, which I try to avoid in order to keep my MPEG-2 video quality.

[SatStorm]

Which channel you grab and with what hardware? If it is MTV france / VH1 European from TPS, I know the solution!

Also, fill your Computer Details/Setup at your profile. It helps you know...

[geohei]

It's a german channel (WDR). 480 and 544 are common resolutions for this one. However which channel it is is not that important. However I'd like to know what your solution for your TPS recordings is.

Thanks.

[SatStorm]

For TPS a legal subscription card
For WDR, change TP (11.836 H): It is 704 x 576 there (and DVB standard)
WDR's own TP (12422H) use the same multiplexing technology with Sky Italia (so no PVRs and DVB PC cards are capable to grabb without issues).

It is important which channel and which provider uplink it to the satellite

[geohei]

Ok, take "Chamber TV", 12552 V 22000, transmitting 480x576 at 19:20 UTC on 28.01.2005. I said that the channel is not important because the issue is the resolution. If it's different from 352, 704 or 720, it doesn't matter from which channel it comes from. Or did I miss something?

I found now 2 solutions to get this working.

1. DVDPatcher. Patch the mpeg stream to something DVD conform in order to be accepted by the DVD authoring software. Close the DVD authoring software (save project first), patch the stream back to the original resolution (otherwise the stream has an empty band at the right side), the load it back to the DVD authoring software and author.

2. Somehow (didn't figure out yet exactly) with ProjectX.

TIA

[ronnylov]

You can use DVD-lab and then you don't need an external patcher when authoring.

I use PVAStrumento to demux and fix errors but you can as well use ProjectX, they do the same thing but sometimes one program is better than the other.

Then I can edit the elementary streams with MPEG2Schnitt ot Cuttermaran (with edit I mean just cut out commersials and trim start and end of the recording).

And the last step is authoring with DVD-lab.

But it does not work on all players. I have problems with anything else than standard resolutions on one of my DVD-players and patching does not help. So for best compability you can transcode the video stream to a legal DVD-resolution with any mpeg2 encoder. Personally I prefer mainconcept encoder 1.4.2 or Canopus Procoder.

[geohei]

@ronnylov
Thanks for your answer!