[PD] file format for GEM

Stephan Elliot Perez dreamoftheshoreofanotherworld at gmail.com
Mon Feb 4 22:20:56 CET 2013


Hahah, I did not mean it as a tip. I was complaining about the file size.

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.

On Mon, Feb 4, 2013 at 9:28 PM, chris clepper <cgclepper at 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 at 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 at 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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>>
>>
>> --
>> ____________________
>> m.e.grimm | m.f.a | ed.m.
>> megrimm at gmail.com
>> _________________________________
>>
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