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JohnAd
Founder & Lead Developer
Joined: 07 Mar 2002
Posts: 401
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 Posted: Sat Feb 26, 2005 6:13 am Post subject: Alpha 0.0.6 version of MPEG decoders |
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Get the latest version here and the source here
The main changes are:
Added CSS handling for DVDs
Removed double buffering
Fixed some issues with MPEG1
As usual bug reports gratefully accepted. It would be helpful if when reporting bugs people said which software they are using and what renderer they are using.
Cheers
John
Last edited by JohnAd on Sun Dec 18, 2005 1:20 pm; edited 1 time in total |
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FitzRoy
Joined: 28 Feb 2005
Posts: 10
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| Posted: Mon Feb 28, 2005 11:27 pm Post subject: |
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I don't know why you don't get more posts here... maybe there aren't that many bugs left  Anyway, I have a bug report, though it's not specific to this version, it's always been happening. I've just neglected to post it. I also can't say for sure if it's an ATI problem, but I'm trying to get my hands on another decoder to be sure.
Here's the deal. I've got some mpeg2 video from my tivo that I've made dvds into. It plays back fine in all the VMR modes, but in overlay the video is all scrambled (trippy 70s waviness). What's different about this material from normal stuff is it is 480x480 res. The sound still plays back fine. Anyways, just thought I'd let you know. |
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avid
Joined: 01 Mar 2005
Posts: 10
Location: London, UK
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| Posted: Tue Mar 01, 2005 11:53 am Post subject: Terribly juddery with DTV recording |
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0.0.6 is not better (and perhaps a bit worse) than 0.0.5 when used with many of my TV (DigiTV) PS-format recordings. This is with Zoom Player and the open source splitter and VMR9.
A 3.3MB sample can be found at http://brianavid.com/xfer/grumpy.mpg. It is almost unwatchable with DScaler, but is fine when I use the Elecard decoder. But some other recorded transmissions are fine with either decoder. Anyone care to download it and give it a try?
My plan is to switch to DScaler 5 when it matches Elecard in quality. It's gettng close, but I can't switch totally over just yet.
Brian
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Kram Sacul
Joined: 01 Mar 2005
Posts: 13
Location: Southern California
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| Posted: Tue Mar 01, 2005 4:16 pm Post subject: |
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| 0.0.6 is just as stuttery on my setup as the previous versions. Maybe even more so. Frames are dropped but don't show up in Zoom Players playback info. And this is without ffdshow. |
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JohnAd
Founder & Lead Developer
Joined: 07 Mar 2002
Posts: 401
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| Posted: Wed Mar 02, 2005 7:52 am Post subject: |
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Brian
Downloading the test file now
Kram Sacul
Sorry to hear you are not seeing things smoother, which renderer are you using, what refresh rate output.
John |
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diehardii
Joined: 30 Aug 2004
Posts: 3
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| Posted: Wed Mar 02, 2005 8:40 am Post subject: |
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Well its weird, but the video looks fine...
Hi John, did the interlacing flags make it into this one?
~Steve |
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avid
Joined: 01 Mar 2005
Posts: 10
Location: London, UK
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| Posted: Wed Mar 02, 2005 9:12 am Post subject: |
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| diehardii wrote: | Well its weird, but the video looks fine...
Hi John, did the interlacing flags make it into this one? |
Strange...
The effect I see is as though the frames were appearing slightly out of sequence (perhaps within a GOP). I don't *think* it's interlacing. I wouldn't expect that to look like this serious juddering (which feels like at about 4-8 Hz). Don't interlacing problems manifest as "comb" effects? But I am not well enough up on MPEG aftefacts to say definitely.
I've just tried it on a 2nd machine using Overlay and not VMR9 - same problem - maybe worse.
Brian
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JohnAd
Founder & Lead Developer
Joined: 07 Mar 2002
Posts: 401
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| Posted: Wed Mar 02, 2005 9:22 am Post subject: |
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Brian
It plays fine on my XP SP1 machine at work which has an Intel MB graphics processor. There does seem to be a problem with some graphics chipsets and PAL material flagged as top frame first. I'll test at home on some Radeon cards and see what I get. I think this is either a driver or a VMR revision thing.
What card/driver OS/DX rev are you using?
John |
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avid
Joined: 01 Mar 2005
Posts: 10
Location: London, UK
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| Posted: Wed Mar 02, 2005 10:22 am Post subject: |
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| Quote: | | What card/driver OS/DX rev are you using? |
Both machines are running XP SP2 DX 9c.
One machine (my development machine) uses Overlay or VMR7 (same problem) on a GeForce4 MX 420.
The other (the domestic TV) uses VMR9 on an ATI 9600 Pro (via PowerStrip to set a resolution of 960*540 - but I can't see that being important).
Brian
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groovyclam
Joined: 30 Sep 2004
Posts: 17
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| Posted: Wed Mar 02, 2005 11:10 am Post subject: |
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I *think* avid and I get the same problem effect.
Not combing, but a sort of judder - it looks like avid says with frames just out of sequence.
I use ZoomPlayer with elecard demux/splitter.
This is on Win XP Home SP2.
I think avid and I use the same graphics setup.
An ATI Radeon 9600 outputting a PAL 50Hz 16:9 signal via PowerStrip.
I am using 1024x576 but avid uses a 960x540 res ( both 16:9 )
We are both using MPEG2 files written from a Nebula DigiTV FreeView card.
( Correct me if I am wrong about your setup avid )
If I use the latest NVIDIA MPEG2 decoder with the same elecard demux/splitter I don't get any judder using the same files I see judder with when I use the DScaler5 decoder. They play fine.
When using the DScaler5 decoder the files *start* to play perfectly with no judder and with good deinterlacing of video material.
It is only when I do a "jump forward x seconds" in ZoomPlayer that the judder can start to happen. It doesn't even happen all the time with a jump ( it happens about 50% of the jumps ). Jumping back and forward can fix the judder and the file can suddenly play properly again.
This is with VMR9.
If I use Overlay then the judder is *always* there - > from the start of play and can not be got rid of by jumping forward or back.
Avid -> the only difference appears to be our splitter. Try using the elecard splitter with VMR9 and see if you can get the file to start playing fine and then cause the judder by a jump forward x seconds.
I use "force BOB" in the DScaler5 options and have a "true" 576 vertical res for video material to appear "properly" |
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avid
Joined: 01 Mar 2005
Posts: 10
Location: London, UK
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| Posted: Wed Mar 02, 2005 12:19 pm Post subject: |
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| groovyclam wrote: | I think avid and I use the same graphics setup.
...
( Correct me if I am wrong about your setup avid ) |
No - that's right
| Quote: | Avid -> the only difference appears to be our splitter. Try using the elecard splitter with VMR9 and see if you can get the file to start playing fine and then cause the judder by a jump forward x seconds.
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For me, on my "Grumpy" sample, it judders right from the beginning with either splitter.
Also (as an aside, and as discussed in another forum) I avoid the elecard splitter as it gets the duration of some recordings wrong. The open source splitter does not suffer from this.
Brian
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Kram Sacul
Joined: 01 Mar 2005
Posts: 13
Location: Southern California
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| Posted: Wed Mar 02, 2005 5:32 pm Post subject: |
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| JohnAd wrote: | Brian
Kram Sacul
Sorry to hear you are not seeing things smoother, which renderer are you using, what refresh rate output.
John |
I've used all the renderers, overlay and vmr9, and my refresh rate is 72hz. Sonic Cinemaster is smooth as silk even with ffdshow put into the mix. Dscaler5 at this point judders, stutters, and sputters like an old car. |
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JohnAd
Founder & Lead Developer
Joined: 07 Mar 2002
Posts: 401
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| Posted: Thu Mar 03, 2005 1:43 am Post subject: |
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[quote="avid"] | groovyclam wrote: | | For me, on my "Grumpy" sample, it judders right from the beginning with either splitter. |
Have you tried with MS splitter? It shouldn't make any difference but is worth a try.
John |
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avid
Joined: 01 Mar 2005
Posts: 10
Location: London, UK
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| Posted: Thu Mar 03, 2005 1:50 am Post subject: |
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[quote="JohnAd"] | avid wrote: | | groovyclam wrote: | | For me, on my "Grumpy" sample, it judders right from the beginning with either splitter. |
Have you tried with MS splitter? It shouldn't make any difference but is worth a try.
John |
You are right - it made no difference (tested on my "Overlay" machine).
Brian
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JohnAd
Founder & Lead Developer
Joined: 07 Mar 2002
Posts: 401
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| Posted: Thu Mar 03, 2005 5:36 am Post subject: |
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Brian
What deinterlacing setting do you use in Elecard? Do you use VMR deinterlacing or one of the others?
John
Last edited by JohnAd on Thu Mar 03, 2005 7:54 am; edited 1 time in total |
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