image sequence player in C or python

(This is my first ever bid on freelancer!) Fourth state added to the US: Georgia Looking at the description, it seems as though the nicest solution would be to produce a patch for omxplayer which allows for reverse playback. As it provides controls for skipping forwards/backwards in time, I think it should be fairly trivial to add two more controls for switching between forwards/reverse playback. The latest omxplayer also has the ability to read files from stdin, meaning that I could write another simple program which feeds omxplayer the image frames infinitely. I have a few Raspberry Pis I can use for testing. I'm comfortable with Debian (therefore Raspbian) and within 10 days I'll be able to send you a patched version of omxplayer compiled for the Pi, provided I can get some more information on the following: - Does there definitely need to be a variable to change the length of a video, or can this be handled automatically by omxplayer? - What format(s) are your image sequences? - Are the PIRs handled by another program? Should I write one to communicate with omxplayer? (e.g. a Python script which listens to the right GPIO pins and sends forward/reverse/pause playback commands to omxplayer) If you could send me some example data that would be useful, otherwise I'll find some 1080p videos and cut them up into 100/1000 frame JPEG image sequences, for testing. Thanks, Owain Jones / [login to view URL]

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Hi Reply: Georgia With strong experience in embedded software development using both C and Python, especially for Raspberry PI. I can do this. Look forward to working with you. Thank you. Regards, -- Suriyan.

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Hi, Wikipedia says that the 4th state is Georgia. About your image player: omxplayer uses some low level stuff (that's why it decodes some big videos smoothly) and this is somewhat difficult to achieve. I think 25 fps can be achieved, but maybe not having a smooth playback, SD speed access is a big deal. I will code a C# app for your Pi, it has a performance between C and Python. I can do tricks to improve the speed (like pre-catching images) but I need to know a few extra details: 1) Do you need the speed to be smooth? or as fast is possible? 2) What's the image file size/dimensions? Can we assume certain file size * sequence length limit (related to the free ram in the pi) as an upper boundary? (this question applies only if playback needs to be smooth) I will replace your PIRs with 2 buttons connected to pin 17-18 here, just FYI. C# allows you to use the exact same app in Windows/Mac :) and in the Pi

Georgia Yes, this is possible. I can write the code in C and using SDL. I've used SDL in the past decade in several projects. You could also automate it to count how many frames/images are given to the program so you don't have to manually adjust that, unless I'm missing something here. Cheers, Lilac

Hello I have extensive experience on c and armed based devices As I understand you simply need a high speed image render on pi. This can be done with x window or qt library build for arm. Please get in touch for further discussion. Regards Zahab

Georgia. I will use pyGtk for the image rendering (video simulation). I dont have a raspberry pi so I would have to connect to yours to test it.