---------- Forwarded message ---------- From: Stephan Elliot Perez dreamoftheshoreofanotherworld@gmail.com Date: Mon, Feb 4, 2013 at 10:28 PM Subject: Re: [PD] file format for GEM To: J Oliver jaime.oliver2@gmail.com
I have divided things into clips I want to use in GEM. So for now, I am putting laggy clips aside. If I have this problem with one that I find indispensable (I have some redundant material), I will probably try another codec.
But with photo-jpeg, some of the files were getting to be over 20 GB. D=
On Mon, Feb 4, 2013 at 10:26 PM, J Oliver jaime.oliver2@gmail.com wrote:
As I said, the Apple Intermediary Codec works. However, at some random points in the videos (and only in a few files), the playback becomes very laggy. This applies in any Player, not just GEM.
I've had this problem. How do you deal with audio sync in these cases?
J
On Mon, Feb 4, 2013 at 9:28 PM, chris clepper cgclepper@gmail.com wrote:
The M is for 'Motion' and uses two fields per frame, so it is interlaced.
On Mon, Feb 4, 2013 at 3:18 PM, me.grimm megrimm@gmail.com wrote:
Also, I selected JPEG-Photo using the program "MPEGStreamclip" at %100
this actually worked pretty decent. thanks for the tip!
I assume JPEG-Photo is MJPEG: The video file gets so large, because you
might someone know: what is the difference between photo-jpeg and motion-jpeg? i am assuming from reading around the web that they are the same thing... but maybe not?
m
On Sun, Feb 3, 2013 at 4:09 PM, Thomas Mayer thomas@residuum.org wrote:
Hi,
please respond to the list, as others may help in answering your follow-up questions, and / or may benefit from the conversation.0
On 03.02.2013 21:49, Stephan Elliot Perez wrote:
Thanks. I have no idea what a bash script is or what to do with it,
but I
will read through the thread...
If you use Linux or Mac OS X, bash is usually installed on your system. It is a command line interface and can be used for scripting. (http://en.wikipedia.org/wiki/Bash_%28Unix_shell%29)
This particular script is nothing fancy, and I have made it mostly to remind the parameters for mencoder.
Also, I selected JPEG-Photo using the program "MPEGStreamclip" at %100 quality and it produces quite a large file. With "auto", the CPU goes
over
90, but if I drag up or down on the framerate's number box, it stays
at
around 30-40...
I assume JPEG-Photo is MJPEG: The video file gets so large, because you store a JPEG for each frame instead of full image for keyframes only
and
then changes for subsequent frames as do other video codecs (rough explanation). [pix_film] can then read each frame as a JPEG and does
not
need to find the last keyframe and apply the changes to it, so playback should be possible with lower CPU usage.
Please tell us some information about your system, i.e. CPU, graphic card, operating system etc., maybe someone with a similar setup can respond with further advice for optimisation.
Hth, Thomas -- "Chaney was aware that anything, however small, can get the eye of the media if it's repulsive enough." (Robert Anton Wilson - The Universe Next Door) http://www.residuum.org/
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On 2013-02-04 22:29, Stephan Elliot Perez wrote:
But with photo-jpeg, some of the files were getting to be over 20 GB. D=
20GB shouldn't be a big deal with todays harddisks. if you care for speed, you might even want to get a (not so cheap) SSD disk that holds all your videos.
fgamsdr IOhannes
-
IOhannes m zmoelnig -
Stephan Elliot Perez