[PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
Hi,

I am currently working on a project which uses films with GEM. However, the
films are very glitchy and play very slowly when they load up. I was
wondering if anyone knew anything about how to fix this problem?

The videos used were taken on a Canon Ixus 127 HS and last between 10 and
15 seconds. They are .MOV files and I even tried exporting them as smaller
files but it didn't change their glitchiness. Here is an example of the
file before and after the export with the original file being 80.8MB and
the exported file being 5.9MB. Even with a drastic change in size, the
difference in playback did not change much at all.

Any thoughts and ideas welcome. Thanks!
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Re: [PD] Video problems using GEM

2014-04-17 Thread Antonio Roberts
Do you have details on the following:

* What operating system you're on
* What version of Pd you're using
* a sample video
* a screenshot of the glitchy video output
* A sample patch that produces the glitchy output

On 17 April 2014 12:11, Claire O'Connor oconn...@tcd.ie wrote:
 Hi,

 I am currently working on a project which uses films with GEM. However, the
 films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10 and 15
 seconds. They are .MOV files and I even tried exporting them as smaller
 files but it didn't change their glitchiness. Here is an example of the file
 before and after the export with the original file being 80.8MB and the
 exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
Operating System is MacOSX 10.8.5

Pd version is Pd Extended 0.43.4

It would be hard to show in a screenshot what the video looks like but it
is basically a slowed down version of the original that doesn't run
smoothly. The video quality is visible, however.

Here is a screenshot of a patch that I've been using as an example too. The
two toggles are connected to a bang as it runs within a sequence.

Thanks!



On 17 April 2014 12:30, Antonio Roberts anto...@hellocatfood.com wrote:

 Do you have details on the following:

 * What operating system you're on
 * What version of Pd you're using
 * a sample video
 * a screenshot of the glitchy video output
 * A sample patch that produces the glitchy output

 On 17 April 2014 12:11, Claire O'Connor oconn...@tcd.ie wrote:
  Hi,
 
  I am currently working on a project which uses films with GEM. However,
 the
  films are very glitchy and play very slowly when they load up. I was
  wondering if anyone knew anything about how to fix this problem?
 
  The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15
  seconds. They are .MOV files and I even tried exporting them as smaller
  files but it didn't change their glitchiness. Here is an example of the
 file
  before and after the export with the original file being 80.8MB and the
  exported file being 5.9MB. Even with a drastic change in size, the
  difference in playback did not change much at all.
 
  Any thoughts and ideas welcome. Thanks!
 
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Re: [PD] Video problems using GEM

2014-04-17 Thread Antonio Roberts
Assuming that that screenshot is all of the patch (it would be more
useful for everyone if you shared the patch instead of a screenshot)
then I would assume that there's something happening with the video
file. Possibly codec issues or something else. However, without having
access to a sample video file it'd be hard to diagnose what's wrong.

On 17 April 2014 12:38, Claire O'Connor oconn...@tcd.ie wrote:
 Operating System is MacOSX 10.8.5

 Pd version is Pd Extended 0.43.4

 It would be hard to show in a screenshot what the video looks like but it is
 basically a slowed down version of the original that doesn't run smoothly.
 The video quality is visible, however.

 Here is a screenshot of a patch that I've been using as an example too. The
 two toggles are connected to a bang as it runs within a sequence.

 Thanks!



 On 17 April 2014 12:30, Antonio Roberts anto...@hellocatfood.com wrote:

 Do you have details on the following:

 * What operating system you're on
 * What version of Pd you're using
 * a sample video
 * a screenshot of the glitchy video output
 * A sample patch that produces the glitchy output

 On 17 April 2014 12:11, Claire O'Connor oconn...@tcd.ie wrote:
  Hi,
 
  I am currently working on a project which uses films with GEM. However,
  the
  films are very glitchy and play very slowly when they load up. I was
  wondering if anyone knew anything about how to fix this problem?
 
  The videos used were taken on a Canon Ixus 127 HS and last between 10
  and 15
  seconds. They are .MOV files and I even tried exporting them as smaller
  files but it didn't change their glitchiness. Here is an example of the
  file
  before and after the export with the original file being 80.8MB and the
  exported file being 5.9MB. Even with a drastic change in size, the
  difference in playback did not change much at all.
 
  Any thoughts and ideas welcome. Thanks!
 
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 http://www.hellocatfood.com
 





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http://www.hellocatfood.com


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Re: [PD] Video problems using GEM

2014-04-17 Thread Chris Clepper
The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
Intermediate Codec' or ProRes (which comes with what's left of Final Cut
'Pro').  The files will be much larger in size on the drive but play back
much better.  When I wrote the OSX pix_film/movie code long ago, it was
only intended to play back intraframe codecs like the JPEG based ones and
not MPEG which are consumer delivery formats.

You should also set the gemwin to render at least 30 frames per second and
for smoothest playback use 60fps which is the refresh rate of an LCD.  I
think the default is still 15 or 20fps?


On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10 and
 15 seconds. They are .MOV files and I even tried exporting them as smaller
 files but it didn't change their glitchiness. Here is an example of the
 file before and after the export with the original file being 80.8MB and
 the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
Hi Chris,

Thanks for your help. Converting the videos to those formats definitely
helped. I am using Pure Data in a project which is attempting to create a
slideshow. I am also using pix_image in conjunction with pix_film for this
project and everytime I have a video playing and load a picture during that
time, the video playback slows down. Have you any ideas on how to prevent
this? I am using JPEGs taken on the same camera as mentioned above (Canon
Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
have banged to load at once is three. Here is some more information on
those images.

Any thoughts you might have would be a great help. Thank you!


On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second and
 for smoothest playback use 60fps which is the refresh rate of an LCD.  I
 think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10 and
 15 seconds. They are .MOV files and I even tried exporting them as smaller
 files but it didn't change their glitchiness. Here is an example of the
 file before and after the export with the original file being 80.8MB and
 the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread John Harrison
I wonder if it would work better if you ran 2 Pd instances, loaded the pics
in one and ran the movie in the other, then shared the pics to the movie
instance with [pix_share_read] and [pix_share_write]?


On Thu, Apr 17, 2014 at 10:51 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
Thanks for the suggestion, John. I'll give it a go!


On 17 April 2014 17:16, John Harrison john.harri...@alum.mit.edu wrote:

 I wonder if it would work better if you ran 2 Pd instances, loaded the
 pics in one and ran the movie in the other, then shared the pics to the
 movie instance with [pix_share_read] and [pix_share_write]?


 On Thu, Apr 17, 2014 at 10:51 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.iewrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Chris Clepper
Does the video just slow down while the image is loading from the disk or
does it stay slow after the image is loaded?

If it is the disk access that slows everything down, preload the still
images into a pix_buffer when the patch starts and then display the images
out of RAM.

I would also resize the stills to no larger than the resolution of the
display.  4600x3456 is a large texture for OpenGL.


On Thu, Apr 17, 2014 at 11:51 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
I have a metro set to load pictures every 5 seconds so they are constantly
loading and the video remains slowed down even between each load. It seems
to slow everything down however, as the metro does not bang precisely after
5 seconds, it usually takes longer and is unreliable.

I haven't used pix_buffer before but will have a look into it and hopefully
that should resolve the issue.

Thanks so much again!


On 17 April 2014 17:34, Chris Clepper cgclep...@gmail.com wrote:

 Does the video just slow down while the image is loading from the disk or
 does it stay slow after the image is loaded?

 If it is the disk access that slows everything down, preload the still
 images into a pix_buffer when the patch starts and then display the images
 out of RAM.

 I would also resize the stills to no larger than the resolution of the
 display.  4600x3456 is a large texture for OpenGL.


 On Thu, Apr 17, 2014 at 11:51 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.iewrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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Re: [PD] Video problems using GEM

2014-04-17 Thread Chris Clepper
I created pix_share for HD videos in cases like this, but it is a little
tricky to use.  On OSX, you need to edit some deep OS config files to set
up the shm correctly.  For images at 16MP, the settings will need to be
pretty large too or it will be very slow.  It's not for the uninitiated!

pix_buffer is much easier to use for this, provided all of the images can
fit in RAM or less than 4GB total for one Pd process.



On Thu, Apr 17, 2014 at 12:16 PM, John Harrison
john.harri...@alum.mit.eduwrote:

 I wonder if it would work better if you ran 2 Pd instances, loaded the
 pics in one and ran the movie in the other, then shared the pics to the
 movie instance with [pix_share_read] and [pix_share_write]?


 On Thu, Apr 17, 2014 at 10:51 AM, Claire O'Connor oconn...@tcd.ie wrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.iewrote:

 Hi,

 I am currently working on a project which uses films with GEM. However,
 the films are very glitchy and play very slowly when they load up. I was
 wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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 UNSUBSCRIBE and account-management -
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Re: [PD] Video problems using GEM

2014-04-17 Thread Claire O'Connor
That does sound quite complicated. I'll see how I get on with pix_buffer;
it could be the answer to all of my problems! Either way, converting my
video files to AIC files has helped immensely so that's a big problem out
of the way :)


On 17 April 2014 17:44, Chris Clepper cgclep...@gmail.com wrote:

 I created pix_share for HD videos in cases like this, but it is a little
 tricky to use.  On OSX, you need to edit some deep OS config files to set
 up the shm correctly.  For images at 16MP, the settings will need to be
 pretty large too or it will be very slow.  It's not for the uninitiated!

 pix_buffer is much easier to use for this, provided all of the images can
 fit in RAM or less than 4GB total for one Pd process.



 On Thu, Apr 17, 2014 at 12:16 PM, John Harrison 
 john.harri...@alum.mit.edu wrote:

 I wonder if it would work better if you ran 2 Pd instances, loaded the
 pics in one and ran the movie in the other, then shared the pics to the
 movie instance with [pix_share_read] and [pix_share_write]?


 On Thu, Apr 17, 2014 at 10:51 AM, Claire O'Connor oconn...@tcd.iewrote:

 Hi Chris,

 Thanks for your help. Converting the videos to those formats definitely
 helped. I am using Pure Data in a project which is attempting to create a
 slideshow. I am also using pix_image in conjunction with pix_film for this
 project and everytime I have a video playing and load a picture during that
 time, the video playback slows down. Have you any ideas on how to prevent
 this? I am using JPEGs taken on the same camera as mentioned above (Canon
 Ixus 127 HS) and they are between 3MB and 6MB each. The most images I would
 have banged to load at once is three. Here is some more information on
 those images.

 Any thoughts you might have would be a great help. Thank you!


 On 17 April 2014 14:44, Chris Clepper cgclep...@gmail.com wrote:

 The issue is with the h.264 codec.  On the Mac, compress them as 'Apple
 Intermediate Codec' or ProRes (which comes with what's left of Final Cut
 'Pro').  The files will be much larger in size on the drive but play back
 much better.  When I wrote the OSX pix_film/movie code long ago, it was
 only intended to play back intraframe codecs like the JPEG based ones and
 not MPEG which are consumer delivery formats.

 You should also set the gemwin to render at least 30 frames per second
 and for smoothest playback use 60fps which is the refresh rate of an LCD.
  I think the default is still 15 or 20fps?


 On Thu, Apr 17, 2014 at 7:11 AM, Claire O'Connor oconn...@tcd.iewrote:

 Hi,

 I am currently working on a project which uses films with GEM.
 However, the films are very glitchy and play very slowly when they load 
 up.
 I was wondering if anyone knew anything about how to fix this problem?

 The videos used were taken on a Canon Ixus 127 HS and last between 10
 and 15 seconds. They are .MOV files and I even tried exporting them as
 smaller files but it didn't change their glitchiness. Here is an example 
 of
 the file before and after the export with the original file being 80.8MB
 and the exported file being 5.9MB. Even with a drastic change in size, the
 difference in playback did not change much at all.

 Any thoughts and ideas welcome. Thanks!

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