vade

Tired of seeing the same questions on the list, I put together 12 

patches that show better and better techniques for single and dual 

channel quicktime playback. These patches are aimed more at beginner 

and intermediate users looking for quicktime movie playback.

I hope people find these interesting. There is also a patch in there 

that I would love folks who have the 'stuttering' playback woes to try 

out. While its not an ideal solution, it might help - it did for me.

I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size, 

25fps, playing patch # 5 resulted in visible stutters, whereas patch 

Credit to Luke Dubois and Josh Goldberg about the technique. it does 

not solve all issues (and introduces a few others) (ideally patch 5 

and 6 should behave the same), but, alas... it might help narrow down 

Let me know if these patches are useful: ive posted them here.

Tired of seeing the same questions on the list, I put together 12  
patches that show better and better techniques for single and dual  
channel quicktime playback. These patches are aimed more at beginner  
and intermediate users looking for quicktime movie playback.

I hope people find these interesting. There is also a patch in there  
that I would love folks who have the 'stuttering' playback woes to try  
out. While its not an ideal solution, it might help - it did for me.

I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,  
25fps, playing patch # 5 resulted in visible stutters, whereas patch  
6, I could not notice them in any way.

Credit to Luke Dubois and Josh Goldberg about the technique. it does  
not solve all issues (and introduces a few others) (ideally patch 5  
and 6 should behave the same), but, alas... it might help narrow down  
the problem?

quicktime-playback-optimization-some-example-patches

On Nov 29, 2007, at 12:06 PM, vade wrote:

> Tired of seeing the same questions on the list, I put together 12 

> patches that show better and better techniques for single and dual 

> channel quicktime playback. These patches are aimed more at 

> beginner and intermediate users looking for quicktime movie playback.

Super examples, Anton! Many thanks for sharing. I'm glad to hear that 

you guys were able to find an acceptable (if slightly cumbersome) 

solution to this issue. Hopefully in the next major release of Jitter 

(not for a while, since the next Jitter release is primarily a 

compatibility release for Max 5), we'll make it much simpler to make 

> Tired of seeing the same questions on the list, I put together 12  
> patches that show better and better techniques for single and dual  
> channel quicktime playback. These patches are aimed more at  
> beginner and intermediate users looking for quicktime movie playback.

Super examples, Anton! Many thanks for sharing. I'm glad to hear that  
you guys were able to find an acceptable (if slightly cumbersome)  
solution to this issue. Hopefully in the next major release of Jitter  
(not for a while, since the next Jitter release is primarily a  
compatibility release for Max 5), we'll make it much simpler to make  
patches like #6 and #12.

Unfortunately I havent adopted technique #6 in any of my patches, but 

I plan on giving it a go. I'll be happy to report back. Id love to 

hear feedback from others who have reported the judder issue.

I hadnt seen mention of this method on the list, so I thought id put 

it out there. No idea if it is a definitive solution for everyone.

On Nov 29, 2007, at 3:28 PM, Joshua Kit Clayton wrote:

> On Nov 29, 2007, at 12:06 PM, vade wrote:

>> Tired of seeing the same questions on the list, I put together 12 

>> patches that show better and better techniques for single and dual 

>> channel quicktime playback. These patches are aimed more at 

>> beginner and intermediate users looking for quicktime movie playback.

> Super examples, Anton! Many thanks for sharing. I'm glad to hear 

> that you guys were able to find an acceptable (if slightly 

> cumbersome) solution to this issue. Hopefully in the next major 

> release of Jitter (not for a while, since the next Jitter release is 

> primarily a compatibility release for Max 5), we'll make it much 

> simpler to make patches like #6 and #12.

Unfortunately I havent adopted technique #6 in any of my patches, but  
I plan on giving it a go. I'll be happy to report back. Id love to  
hear feedback from others who have reported the judder issue.

I hadnt seen mention of this method on the list, so I thought id put  
it out there. No idea if it is a definitive solution for everyone.

>
> On Nov 29, 2007, at 12:06 PM, vade wrote:
>
>> Tired of seeing the same questions on the list, I put together 12  
>> patches that show better and better techniques for single and dual  
>> channel quicktime playback. These patches are aimed more at  
>> beginner and intermediate users looking for quicktime movie playback.
>
> Super examples, Anton! Many thanks for sharing. I'm glad to hear  
> that you guys were able to find an acceptable (if slightly  
> cumbersome) solution to this issue. Hopefully in the next major  
> release of Jitter (not for a while, since the next Jitter release is  
> primarily a compatibility release for Max 5), we'll make it much  
> simpler to make patches like #6 and #12.
>
> -Joshua


nice, kind and useful work...
Many Thanks Vade


Just a question: Why is it that you use a 'metro' for CPU patches and 

Nice,
Just a question: Why is it that you use a 'metro' for CPU patches and  
a 'qmetro' for the GPU ones.
Thanks

> I hope people find these interesting. There is also a patch in 

> there that I would love folks who have the 'stuttering' playback 

> woes to try out. While its not an ideal solution, it might help - 

> I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size, 

> 25fps, playing patch # 5 resulted in visible stutters, whereas 

> patch 6, I could not notice them in any way.

> Credit to Luke Dubois and Josh Goldberg about the technique. it 

> does not solve all issues (and introduces a few others) (ideally 

> patch 5 and 6 should behave the same), but, alas... it might help 

> Let me know if these patches are useful: ive posted them here.

> Hi.
>
> Tired of seeing the same questions on the list, I put together 12  
> patches that show better and better techniques for single and dual  
> channel quicktime playback. These patches are aimed more at  
> beginner and intermediate users looking for quicktime movie playback.
>
> I hope people find these interesting. There is also a patch in  
> there that I would love folks who have the 'stuttering' playback  
> woes to try out. While its not an ideal solution, it might help -  
> it did for me.
>
> See Single channel patch # 6 vs # 5.
>
> I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,  
> 25fps, playing patch # 5 resulted in visible stutters, whereas  
> patch 6, I could not notice them in any way.
>
> Credit to Luke Dubois and Josh Goldberg about the technique. it  
> does not solve all issues (and introduces a few others) (ideally  
> patch 5 and 6 should behave the same), but, alas... it might help  
> narrow down the problem?
>
> Let me know if these patches are useful: ive posted them here.
>
> http://abstrakt.vade.info/?p=147
>
> Thank you,

San Francisco, CA Work: 857-544-3967
Email: bthrew@gmail.com
IM: captogreadmore (AIM)
http:/www.barrythrew.com


Hopefully, this might cut a bit of bandwidth if placed as a sticky...

On Nov 30, 2007 4:18 AM, barry threw wrote:

> > Tired of seeing the same questions on the list, I put together 12

> > patches that show better and better techniques for single and dual

> > channel quicktime playback. These patches are aimed more at

> > beginner and intermediate users looking for quicktime movie playback.

> > I hope people find these interesting. There is also a patch in

> > there that I would love folks who have the 'stuttering' playback

> > woes to try out. While its not an ideal solution, it might help -

> > I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,

> > 25fps, playing patch # 5 resulted in visible stutters, whereas

> > patch 6, I could not notice them in any way.

> > Credit to Luke Dubois and Josh Goldberg about the technique. it

> > does not solve all issues (and introduces a few others) (ideally

> > patch 5 and 6 should behave the same), but, alas... it might help

> > Let me know if these patches are useful: ive posted them here.

On Nov 30, 2007 4:18 AM, barry threw  wrote:

> You are a gentleman and a scholar.
>
> A thousand internets to you.
>
> b
>
> On Nov 29, 2007, at 12:06 PM, vade wrote:
>
> > Hi.
> >
> > Tired of seeing the same questions on the list, I put together 12
> > patches that show better and better techniques for single and dual
> > channel quicktime playback. These patches are aimed more at
> > beginner and intermediate users looking for quicktime movie playback.
> >
> > I hope people find these interesting. There is also a patch in
> > there that I would love folks who have the 'stuttering' playback
> > woes to try out. While its not an ideal solution, it might help -
> > it did for me.
> >
> > See Single channel patch # 6 vs # 5.
> >
> > I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,
> > 25fps, playing patch # 5 resulted in visible stutters, whereas
> > patch 6, I could not notice them in any way.
> >
> > Credit to Luke Dubois and Josh Goldberg about the technique. it
> > does not solve all issues (and introduces a few others) (ideally
> > patch 5 and 6 should behave the same), but, alas... it might help
> > narrow down the problem?
> >
> > Let me know if these patches are useful: ive posted them here.
> >
> > http://abstrakt.vade.info/?p=147
> >
> > Thank you,
>
> Barry Threw
> Media Art and Technology
>
>
> San Francisco, CA Work: 857-544-3967
> Email: bthrew@gmail.com
> IM: captogreadmore (AIM)
> http:/www.barrythrew.com
>
>
>
>

#5: why not just have the videoplane be @colormode uyvy? why go 

through the extra effort of using the cc.uyvy2rgba.lite shader?

> channel quicktime playback. These patches are aimed more at beginner 

> and intermediate users looking for quicktime movie playback.

> I hope people find these interesting. There is also a patch in there 

> that I would love folks who have the 'stuttering' playback woes to 

> try out. While its not an ideal solution, it might help - it did for 

> 25fps, playing patch # 5 resulted in visible stutters, whereas patch 

> Credit to Luke Dubois and Josh Goldberg about the technique. it does 

> not solve all issues (and introduces a few others) (ideally patch 5 

> and 6 should behave the same), but, alas... it might help narrow 

#5: why not just have the videoplane be @colormode uyvy?  why go  
through the extra effort of using the cc.uyvy2rgba.lite shader?

> Hi.
>
> Tired of seeing the same questions on the list, I put together 12  
> patches that show better and better techniques for single and dual  
> channel quicktime playback. These patches are aimed more at beginner  
> and intermediate users looking for quicktime movie playback.
>
> I hope people find these interesting. There is also a patch in there  
> that I would love folks who have the 'stuttering' playback woes to  
> try out. While its not an ideal solution, it might help - it did for  
> me.
>
> See Single channel patch # 6 vs # 5.
>
> I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,  
> 25fps, playing patch # 5 resulted in visible stutters, whereas patch  
> 6, I could not notice them in any way.
>
> Credit to Luke Dubois and Josh Goldberg about the technique. it does  
> not solve all issues (and introduces a few others) (ideally patch 5  
> and 6 should behave the same), but, alas... it might help narrow  
> down the problem?
>
> Let me know if these patches are useful: ive posted them here.
>
> http://abstrakt.vade.info/?p=147
>
> Thank you,
>


I recall reading on the list that windows machines are not able to 

natively handle uyvy textures without this shader conversion to RGBA.

Thus if you use other slab processes, uyvy textures will uh, not work 

(can I get an official answer on this, no PC around to try).

On Nov 30, 2007, at 12:52 PM, joshua goldberg wrote:

> #5: why not just have the videoplane be @colormode uyvy? why go 

> through the extra effort of using the cc.uyvy2rgba.lite shader?

> On Nov 29, 2007, at 3:06 PM, vade wrote:

>> I hope people find these interesting. There is also a patch in 

>> there that I would love folks who have the 'stuttering' playback 

>> woes to try out. While its not an ideal solution, it might help - 

>> I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size, 

>> 25fps, playing patch # 5 resulted in visible stutters, whereas 

>> patch 6, I could not notice them in any way.

>> Credit to Luke Dubois and Josh Goldberg about the technique. it 

>> does not solve all issues (and introduces a few others) (ideally 

>> patch 5 and 6 should behave the same), but, alas... it might help 

>> Let me know if these patches are useful: ive posted them here.

I recall reading on the list that windows machines are not able to  
natively handle uyvy textures without this shader conversion to RGBA.

Thus if you use other slab processes, uyvy textures will uh, not work  
(can I get an official answer on this, no PC around to try).

> #5: why not just have the videoplane be @colormode uyvy?  why go  
> through the extra effort of using the cc.uyvy2rgba.lite shader?
>
> On Nov 29, 2007, at 3:06 PM, vade wrote:
>
>> Hi.
>>
>> Tired of seeing the same questions on the list, I put together 12  
>> patches that show better and better techniques for single and dual  
>> channel quicktime playback. These patches are aimed more at  
>> beginner and intermediate users looking for quicktime movie playback.
>>
>> I hope people find these interesting. There is also a patch in  
>> there that I would love folks who have the 'stuttering' playback  
>> woes to try out. While its not an ideal solution, it might help -  
>> it did for me.
>>
>> See Single channel patch # 6 vs # 5.
>>
>> I tried playing an 1152x640 Photo Jpeg movie, about 650MB in size,  
>> 25fps, playing patch # 5 resulted in visible stutters, whereas  
>> patch 6, I could not notice them in any way.
>>
>> Credit to Luke Dubois and Josh Goldberg about the technique. it  
>> does not solve all issues (and introduces a few others) (ideally  
>> patch 5 and 6 should behave the same), but, alas... it might help  
>> narrow down the problem?
>>
>> Let me know if these patches are useful: ive posted them here.
>>
>> http://abstrakt.vade.info/?p=147
>>
>> Thank you,
>>
>


> I recall reading on the list that windows machines are not able to 

> natively handle uyvy textures without this shader conversion to RGBA.

> Thus if you use other slab processes, uyvy textures will uh, not 

> work (can I get an official answer on this, no PC around to try).

Correct. @colormode UYVY for jit.gl.texture and jit.gl.videoplane 

requires the use of CPU conversion without this shader, since a UYVY 

pixel format is not commonly supported on PC as it is on Apple.

FWIW, this shader actually even looks better than Apple's native UYVY 

pixel format support, since it will perform chroma-smoothing and if 

desired with the other uyvy shaders, appropriate color processing to 

eliminate the "washed out" look of UYVY video as compared to QT RGB 

rendering which applies Gamma correction.

> I recall reading on the list that windows machines are not able to  
> natively handle uyvy textures without this shader conversion to RGBA.
>
> Thus if you use other slab processes, uyvy textures will uh, not  
> work (can I get an official answer on this, no PC around to try).

Correct. @colormode UYVY for jit.gl.texture and jit.gl.videoplane  
requires the use of CPU conversion without this shader, since a UYVY  
pixel format is not commonly supported on PC as it is on Apple.

FWIW, this shader actually even looks better than Apple's native UYVY  
pixel format support, since it will perform chroma-smoothing and if  
desired with the other uyvy shaders, appropriate color processing to  
eliminate the "washed out" look of UYVY video as compared to QT RGB  
rendering which applies Gamma correction.

ahhh thanks so much Vade! Motivation. This should be an in depth article? 

ahhh thanks so much Vade!  Motivation.  This should be an in depth article?  


Quicktime Playback Optimization - some example patches