Strange problem with stream/compression

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Postby Lockstock » Tue Mar 13, 2007 1:00 am

wouldn't surprise me if the people talking about having problems exporting are using video sources with codecs such as DivX and XviD... The exporting problem here has nothing to do with premiere, it's a codec issue, which is evident by the video exporting fine with no compression. Issues like this can come up from using incompatible codecs with premiere for your source footage or compression method in most cases but really I still don't have any idea why Autraya's huffyuv is screwing up.

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Postby Autraya » Tue Mar 13, 2007 1:17 am

lol katie

BasharOfTheAges wrote:you've wasted more time discussing it in this topic than it would have taken to re-encode a few more times... what does that tell you?

:? it tells me that although there are alternatives and work arounds, there is a problem and know one knows how to fix it and I don't want to be doing things the long way around and wasting hours encodeing with every video i do from here on out when i don't have to.
If you're not going to be helpful go spam someone elses thread and get the hell out of this one. Other people have offered ideas which I've taken on board and tested out.

Up until recently there was no problem... I've heard that this happens to lagarith exports from premiere too so i start using Lagarith and then if/when the same thing happens it would be good to know how to fix it.

Karuido wrote:Premiere pro's export sucks and usually only works properly when exporting uncompressed as demonstrated in this thread. ?

but only since yesterday for me... which would indicate that something has happened to make it go that way... well thats what it makes me think anyhoo

Scintilla wrote:Change to Recompress Always (instead of Maintain data rate)?

... :shock: ... u... ROCK! Hey Karuido try that and see if it works for you!
OMFG it works... i've never used the option like that before buuutt I'll take it!
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Postby Scintilla » Tue Mar 13, 2007 6:24 am

Lockstock wrote:wouldn't surprise me if the people talking about having problems exporting are using video sources with codecs such as DivX and XviD...

No, they're usually talking about the lossless codecs like HuffYUV and Lagarith. They're also oftentimes people who know what they're talking about, such as Zarxrax.

And Autraya, good to hear it worked. :)
For completeness's sake, I got the idea from this section of the A/V tech guide:
Absolute Destiny wrote:Recompress - If you do have RGB compression enabled in huffYUV then make sure you select this and choose "Always" (not Maintain Data Rate like the picture says). If you don't do this then Premiere can sometimes do a direct stream copy on clips and pre-rendered scenes and this could be in a different colourspace when using Huffyuv (as it has two modes). If this happens you will end having parts of your amv that are a screen of rainbows as the codec is only decoding either RGB or YUY2 not changing between them. Hence, you should always recompress to be certain it's compressing correctly.
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Postby Lockstock » Tue Mar 13, 2007 6:53 am

Scintilla wrote:
Lockstock wrote:wouldn't surprise me if the people talking about having problems exporting are using video sources with codecs such as DivX and XviD...

No, they're usually talking about the lossless codecs like HuffYUV and Lagarith. They're also oftentimes people who know what they're talking about, such as Zarxrax.


I only speak from personal experience. Wasn't aware that lossless codecs caused such issues with exporting in Premiere Pro without the editor causing the problem themselves through using incompatible codecs and such.
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Postby Willen » Tue Mar 13, 2007 7:23 am

Lockstock wrote:
Scintilla wrote:
Lockstock wrote:wouldn't surprise me if the people talking about having problems exporting are using video sources with codecs such as DivX and XviD...

No, they're usually talking about the lossless codecs like HuffYUV and Lagarith. They're also oftentimes people who know what they're talking about, such as Zarxrax.


I only speak from personal experience. Wasn't aware that lossless codecs caused such issues with exporting in Premiere Pro without the editor causing the problem themselves through using incompatible codecs and such.

From the section that Scintilla quoted from, the problem actually stems from colorspace issues, which is what I suspected from the start. Unfortunately, not being an Adobe Premiere user, I had no clue as to a fix. This is probably why it is suggested to encode all clips for editing as RGB since that is what APP uses internally anyways.

Of course, using DivX or XviD as source and then outputting with Huffyuv in RGB mode may also produce this problem as DivX, XviD, MPEG-2 and most other lossy codecs use YV12 colorspace.
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Postby Autraya » Tue Mar 13, 2007 9:02 am

It's probably also worth mentioning that Huffyuv was stuffing up Lock's beta for me... As in, when I played it on my machine I would get picture looking like this, my betas looked peachy however.
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(i kinda thought these were the rainbows that AD was talking about)

We are using the same version of huffyuv and export settings, but when katie or Lock played it, it looked fine.
So a re-install of the codec and system shut down fixed that problem... and then the problem that started this thread occured....
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Postby Autraya » Tue Mar 13, 2007 9:06 am

Willen wrote:Of course, using DivX or XviD as source and then outputting with Huffyuv in RGB mode may also produce this problem as DivX, XviD, MPEG-2 and most other lossy codecs use YV12 colorspace.

Naww I use huffyuv straight from vobs in RGB24 no alpha channel either.... I don't think it outputs from premiere in YV12 because I have to convertoyv12() before .264 encoding
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