Monday, April 4, 2016

Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 



Mark,
I think it can be both. Probably you're right that if it's called -I it's intraframe :-)
My main goal was to make clear that one cannot judge image quality by size only.
 
Bouke
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS  NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
Sent: Monday, April 04, 2016 2:03 AM
Subject: Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

Bouke - isn't XAVC interframe compression, and XAVC-I intraframe compression? Interframe requires the look forward/backward processes, but intraframe means each frame is compressed independently. For example, DNxHD 36 is intraframe compression, but MPEG-2 is interframe. I would think that intraframe compression would be easier on CPU. However, the special case with XAVC-I is that it's H.264, and therefore, harder for CPU to decompress. I'm willing to concede here on the specifics, just thought all this time it was interframe = complex, intraframe = simple.

On Sun, Apr 3, 2016 at 8:49 AM, 'Edit B' bouke@editb.nl [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 



To be utterly correct, It's slightly more complex than that.
It's not about the AMOUNT of compression, it's about the KIND of compression. Intra frames require to look around more frames to be able to decode a given frame. That takes time and math.
DNxHD 36 is VERY HIGH compression, but still very easy to decode since it's I frame only.
 
And yes, File size does not say anything about quality unless the kind of compression and resolution is the same.
But even then, on a VBR codec a large file may be worse than a small file. Noise free clouds / macro shots are way easier to compress than noisy images where everything is in focus.
 
Bouke
 
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS  NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
Sent: Saturday, April 02, 2016 10:28 PM
Subject: Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

Intra-frame codecs are considerably more compressed than DNx, so yes, the files are smaller. The extra compression is what makes them more painful to edit with.

D.

Sent from my mobile phone - please excuse spellung.
   
On 2 Apr 2016 9:11 p.m., "hartfilms@earthlink.net [Avid-L2]" <Avid-L2@yahoogroups.com> wrote:
>
>  
>
> Thank you, John. I notice that Sony has a plug-in for its AVCI cameras that is supposed to work with AMA. Problems there? I love DNxHD but I have to convince the people responsible for acquisition to record to DNxHD. Are those files larger than AVC Intra? - Jayasri
>
>

Sent from my mobile phone - please excuse spellung.
   


This email has been sent from a virus-free computer protected by Avast. www.avast.com



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Posted by: "Edit B" <bouke@editb.nl>
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Posted by Video Geek Squad at 3:52 AM 0 comments

Sunday, April 3, 2016

Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

There are really good explanations of what goes into this in
"Introduction to Data Compression" by Khalid Sayood. The first few
chapters are written in plain English and are easily understood. The
math gets a little scary (at least for me) after that. It's worth
reading, at least up to the point where your brain starts to sweat. --J.B.

Mark Spano cutandcover@gmail.com [Avid-L2] wrote:
>
>
> Bouke - isn't XAVC interframe compression, and XAVC-I intraframe
> compression? Interframe requires the look forward/backward processes,
> but intraframe means each frame is compressed independently. For
> example, DNxHD 36 is intraframe compression, but MPEG-2 is interframe.
> I would think that intraframe compression would be easier on CPU.
> However, the special case with XAVC-I is that it's H.264, and
> therefore, harder for CPU to decompress. I'm willing to concede here
> on the specifics, just thought all this time it was interframe =
> complex, intraframe = simple.
>
> On Sun, Apr 3, 2016 at 8:49 AM, 'Edit B' bouke@editb.nl
> <mailto:bouke@editb.nl> [Avid-L2] <Avid-L2@yahoogroups.com
> <mailto:Avid-L2@yahoogroups.com>> wrote:
>
> 
>
> To be utterly correct, It's slightly more complex than that.
> It's not about the AMOUNT of compression, it's about the KIND of
> compression. Intra frames require to look around more frames to be
> able to decode a given frame. That takes time and math.
> DNxHD 36 is VERY HIGH compression, but still very easy to decode
> since it's I frame only.
> And yes, File size does not say anything about quality unless the
> kind of compression and resolution is the same.
> But even then, on a VBR codec a large file may be worse than a
> small file. Noise free clouds / macro shots are way easier to
> compress than noisy images where everything is in focus.
> Bouke
> VideoToolShed
> van Oldenbarneveltstraat 33
> 6512 AS NIJMEGEN, the Netherlands
> +31 24 3553311 <tel:%2B31%2024%203553311>
>
> ----- Original Message -----
> *From:* David Ross speckydave@gmail.com [Avid-L2]
> <mailto:speckydave@gmail.com+[Avid-L2]>
> *To:* Avid-L2@yahoogroups.com <mailto:Avid-L2@yahoogroups.com>
> ; hartfilms@earthlink.net <mailto:hartfilms@earthlink.net>
> *Sent:* Saturday, April 02, 2016 10:28 PM
> *Subject:* Re: [Avid-L2] Laptop Media Composer for XAVC
> editing - best configuration and workflow
>
> Intra-frame codecs are considerably more compressed than DNx,
> so yes, the files are smaller. The extra compression is what
> makes them more painful to edit with.
>
> D.
>
> Sent from my mobile phone - please excuse spellung.
>
> On 2 Apr 2016 9:11 p.m., "hartfilms@earthlink.net
> <mailto:hartfilms@earthlink.net> [Avid-L2]"
> <Avid-L2@yahoogroups.com <mailto:Avid-L2@yahoogroups.com>> wrote:
> >
> >
>

__._,_.___
Posted by: john beck <jb30343@windstream.net>
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Have you tried the highest rated email app?
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.

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Posted by Video Geek Squad at 6:25 PM 0 comments

Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

The prosumer version of Sony's XAVC codec is XAVC-S which uses an MP4 rather than an MXF wrapper. Here's what I have so far Understanding XAVC, XAVC-L, XAVC-I and XAVC-S

 

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Posted by: hartfilms@earthlink.net
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Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 5:40 PM 0 comments

Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

Bouke - isn't XAVC interframe compression, and XAVC-I intraframe compression? Interframe requires the look forward/backward processes, but intraframe means each frame is compressed independently. For example, DNxHD 36 is intraframe compression, but MPEG-2 is interframe. I would think that intraframe compression would be easier on CPU. However, the special case with XAVC-I is that it's H.264, and therefore, harder for CPU to decompress. I'm willing to concede here on the specifics, just thought all this time it was interframe = complex, intraframe = simple.

On Sun, Apr 3, 2016 at 8:49 AM, 'Edit B' bouke@editb.nl [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 



To be utterly correct, It's slightly more complex than that.
It's not about the AMOUNT of compression, it's about the KIND of compression. Intra frames require to look around more frames to be able to decode a given frame. That takes time and math.
DNxHD 36 is VERY HIGH compression, but still very easy to decode since it's I frame only.
 
And yes, File size does not say anything about quality unless the kind of compression and resolution is the same.
But even then, on a VBR codec a large file may be worse than a small file. Noise free clouds / macro shots are way easier to compress than noisy images where everything is in focus.
 
Bouke
 
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS  NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
Sent: Saturday, April 02, 2016 10:28 PM
Subject: Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

Intra-frame codecs are considerably more compressed than DNx, so yes, the files are smaller. The extra compression is what makes them more painful to edit with.

D.

Sent from my mobile phone - please excuse spellung.
   
On 2 Apr 2016 9:11 p.m., "hartfilms@earthlink.net [Avid-L2]" <Avid-L2@yahoogroups.com> wrote:
>
>  
>
> Thank you, John. I notice that Sony has a plug-in for its AVCI cameras that is supposed to work with AMA. Problems there? I love DNxHD but I have to convince the people responsible for acquisition to record to DNxHD. Are those files larger than AVC Intra? - Jayasri
>
>

Sent from my mobile phone - please excuse spellung.
   


This email has been sent from a virus-free computer protected by Avast. www.avast.com


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Posted by: Mark Spano <cutandcover@gmail.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (11)
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 5:03 PM 0 comments

Re: [Avid-L2] edit via the cloud question

 

umm... Skype

BG
www.finale.tv


From: "'owen@thenowcorporation.com' owen@thenowcorporation.com [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com
Sent: Sunday, April 3, 2016 10:56 AM
Subject: [Avid-L2] edit via the cloud question

 
I'm trying out alternate ways of playing cuts live streamed from
the avid. Are any of you finding great solutions besides Avid's?
You know with decent audio and smooth video.
thanks!
owen



__._,_.___
Posted by: Bogdan Grigorescu <bogdan_grigorescu@yahoo.com>
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Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 3:26 PM 0 comments

Re: [Avid-L2] edit via the cloud question

 

I iust set up a Slingbox M500 ... works fairly well.

Sent from my iPhone

Randall L. Rike
(818) 406-8480

On Apr 3, 2016, at 10:56 AM, 'owen@thenowcorporation.com' owen@thenowcorporation.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 

I'm trying out alternate ways of playing cuts live streamed from
the avid. Are any of you finding great solutions besides Avid's?
You know with decent audio and smooth video.
thanks!
owen

__._,_.___
Posted by: "Randall L. Rike" <indypix4u@portablepost.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (9)
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 12:27 PM 0 comments

[Avid-L2] Re: edit via the cloud question

 

Read my multiple posts in this thread:


The Avid-L2

 




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Posted by: blafarm@yahoo.com
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (8)
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 11:38 AM 0 comments

Re: [Avid-L2] FrameFlex jpegs

 

I've been messing with this quite a bit as it gives a quick route for my students to link to graphics. It does work but you'll probably find that using Source Settings, Frameflex does not report the colour levels correctly with JPEGs. Best to ignore the reported setting and take a look at the histogram. Also, rotating using Frameflex in the Effect Editor is difficult as you are faced with a rotating wireframe, a bit like Pan and Zoom. When you leave effect mode, the rotation can be seen in the Timeline. A not-completely-finished solution, I think.


With Best Wishes
Roger Shufflebottom
rogershuff@yahoo.co.uk
+44 7973 543660


On 1 Apr 2016, at 15:23, John Pale pale.edit@gmail.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

Good question.  There's not a lot of documentation out there for using linked media/FrameFlex with stills (or even anecdotal reports) but you might want to check a few things and let us know what you find.


1) Does it handle color space correctly? I'm guessing no, but it's probably workable with color correction.
2) What happens if the images get moved or unlinked?  Can they be relinked easily?
3) Is the higher resolution truly maintained on sequence transcodes?  On export? Need to render first?
4) Any weird issues using shared storage? (ISIS, Unity, Terrblock)

I don't know anyone who actually has used it for stills other than playing around.  It seems that now that there is rotation available, it would be a good native solution other than the horror show that is Avid Pan and Zoom.




On Friday, April 1, 2016, Curtis Nichols curtisn@pcsproductions.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 

I haven't seen this discussed before. MC 8.5.1.  I'm linking to a bunch of jpegs, and it seems that they work fine with FrameFlex. 
So do I no longer need Moving Picture for simple zoom and rotate of photos?

Curtis Nichols
PCS Production Co.
Irving, TX.




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Posted by: Roger Shufflebottom <rogershuff@yahoo.co.uk>
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Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 11:32 AM 0 comments

[Avid-L2] edit via the cloud question

 

I'm trying out alternate ways of playing cuts live streamed from
the avid. Are any of you finding great solutions besides Avid's?
You know with decent audio and smooth video.
thanks!
owen

__._,_.___
Posted by: "owen@thenowcorporation.com" <owen@thenowcorporation.com>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (7)
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

__,_._,___
Posted by Video Geek Squad at 10:56 AM 0 comments

Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 



To be utterly correct, It's slightly more complex than that.
It's not about the AMOUNT of compression, it's about the KIND of compression. Intra frames require to look around more frames to be able to decode a given frame. That takes time and math.
DNxHD 36 is VERY HIGH compression, but still very easy to decode since it's I frame only.
 
And yes, File size does not say anything about quality unless the kind of compression and resolution is the same.
But even then, on a VBR codec a large file may be worse than a small file. Noise free clouds / macro shots are way easier to compress than noisy images where everything is in focus.
 
Bouke
 
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS  NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
Sent: Saturday, April 02, 2016 10:28 PM
Subject: Re: [Avid-L2] Laptop Media Composer for XAVC editing - best configuration and workflow

 

Intra-frame codecs are considerably more compressed than DNx, so yes, the files are smaller. The extra compression is what makes them more painful to edit with.

D.

Sent from my mobile phone - please excuse spellung.
   
On 2 Apr 2016 9:11 p.m., "hartfilms@earthlink.net [Avid-L2]" <Avid-L2@yahoogroups.com> wrote:
>
>  
>
> Thank you, John. I notice that Sony has a plug-in for its AVCI cameras that is supposed to work with AMA. Problems there? I love DNxHD but I have to convince the people responsible for acquisition to record to DNxHD. Are those files larger than AVC Intra? - Jayasri
>
>

Sent from my mobile phone - please excuse spellung.
   


This email has been sent from a virus-free computer protected by Avast. www.avast.com

__._,_.___
Posted by: "Edit B" <bouke@editb.nl>
Reply via web post • Reply to sender • Reply to group • Start a New Topic • Messages in this topic (6)
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? The Yahoo Mail app is fast, beautiful and intuitive. Try it today!
this is the Avid-L2

.

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Posted by Video Geek Squad at 5:49 AM 0 comments
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