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Windows 7 embedded not playing videos in Processing but OK in Windows Media Player, VLC and Quicktime

[5 Replies]
- 22-Sep-2013 09:54 AM
- Forum: Core Library Questions
Hi there,

I have been developing a solution on my Mac and am now testing it on a Windows 7 Embedded machine.

All works except videos simply do not play. I do not get an error message, I have tried a few file types, the videos play in Windows Media Player and VLC but not in Processing.

Why would they work on the Mac dev environment and not the Windows 7 Embedded machine? I have even installed processing on the Windows 7 embedded machine and run the solution through processing.

The rest of the solution is working but the videos do not play.

I have created a new project and used the example from here to see if there is an issue outside my solution and Processing:-

http://processing.org/reference/libraries/video/Movie.html
1. import processing.video.*;
2. Movie myMovie;
4. void setup() {
5. size(600, 500, P3D);
6. myMovie = new Movie(this, "attract_loop.mp4");
7. myMovie.loop();
8. }
10. void draw() {
11. image(myMovie, 10, 10);
12. }
14. // Called every time a new frame is available to read
15. void movieEvent(Movie m) {
16. m.read();
17. }
and I get the following error message when quitting (pressing escape) but no error message on start up or during the application, so it might be a red herring:-

(java.exe:3440): GStreamer-CRITICAL **:

Trying to dispose element Movie Player, but it is in READY instead of the NULL state.

You need to explicitly set elements to the NULL state before

dropping the final reference, to allow them to clean up.

This problem may also be caused by a refcounting bug in the

application or some element.

I've installed Quicktime v7.7.4 and even GStreamer installations and this has made no difference either.

Is there an alternative to the built in media player? Am I doing something obviously wrong?

ADDITION - Out of interest and testing purposes, I tried the same code above with Processing v1.5.1 using a P3D mode and the video DOES play but it is very jerky - JAVA2D does not work at all and complains about an ArrayIndexOutOfBoundsException: Coordinate out of bounds for image(myMovie,10,10;) The videos I am testing with play perfectly in Quicktime and VLC.

I've also tried the exported application on a Windows 7 Professional laptop and it worked straight away.

Can anyone shed some light here? I smells like a Windows 7 Embedded / graphics card issue?

Video playback - detect the end of the video after playback

[0 Replies]
- 21-Sep-2013 07:19 AM
- Forum: Core Library Questions
Hi,

What is the best method to detect when a video has completed playback?

I am using the below to play the video, which is standard:-
1. // Movie handlers
2. Movie videoAttractLoop;
4. // Set up the sketch
5. void setup(){
6. // Load videos into memory
7. videoAttractLoop = new Movie(this, "attract_loop.mp4");
9. // Play attract loop as video
10. videoAttractLoop.loop();
11. }
13. // Play the movie stream
14. void movieEvent(Movie m) {
15. m.read();
16. }
Can someone point me in the right direction?

I would like to know how I can tell when the video file has finished playback.

Thank you.

XML parsing only certain childNodes based on variable

[2 Replies]
- 19-Sep-2013 03:18 PM
- Forum: Programming Questions
Hi!

I thought I had cracked it but have a last minute problem to solve. I will keep trying but in the meantime, I wondered if anyone had a quick solution after tackling this before.

Here is the XML:-
1. <product_lines>
2. <number_ranges id="2" />
3. <products>
4. <watch id="1" range="1" filename="range1watch1.jpg" description="Description 1" />
5. <watch id="2" range="1" filename="range1watch2.jpg" description="Description 2" />
6. <watch id="3" range="1" filename="range1watch3.jpg" description="Description 3" />
7. <watch id="5" range="1" filename="range1watch5.jpg" description="Description 5" />
8. <watch id="6" range="1" filename="range1watch6.jpg" description="Description 6" />
9. <watch id="7" range="1" filename="range1watch7.jpg" description="Description 7" />
10. <watch id="8" range="1" filename="range1watch8.jpg" description="Description 8" />
11. <watch id="9" range="2" filename="range2watch1.jpg" description="Description 1" />
12. <watch id="10" range="2" filename="range2watch2.jpg" description="Description 2" />
13. <watch id="11" range="2" filename="range2watch3.jpg" description="Description 3" />
14. </products>
15. </product_lines>
What I would like to do is parse only the watch children that are a certain range. I have tried it doing this:-
1. // Read in XML for the products and ranges
2. xml = loadXML("watch.xml");
4. // Get the number of product ranges
5. XML no_product_lines = xml.getChild("number_ranges");
6. // Get all children for watch
7. XML[] children = xml.getChildren("products/watch");
9. // Parse all watches from the XML file
10. for (int i = 0; i < children.length; i++) {
11. watch_range = children[i].getInt("range");
13. // Only want information for one range of watch from selected range
14. if (watch_range == selected_range) {
15. // Parse required information from the XML file
16. watch_id = children[i].getInt("id");
17. watch_filename = children[i].getString("filename");
18. watch_description = children[i].getString("description");
20. // How many watches in the range
21. watches_in_range_count++;
23. // Do not process any more than 8 watches
24. if (watches_in_range_count <= 8)
25. {
26. // Display picture
28. // Display description
29. if (watch_id != previous_id){
30. text("RANGE 1" + " WATCH ID = " + watch_id + " PREVIOUS ID " + previous_id + " FILENAME = " + watch_filename + " WATCH DESCRIPTION = " + watch_description,100,400 + watches_in_range_count * 30);
31. }
33. // To ensure we don't repeat up to 8
34. previous_id = watch_id;
35. }
36. }
37. }
However, the code above counts the total amount of all watch childNodes no matter what the range attribute is.

Here is the result, which is wrong - the code seems to restart the parsing from the beginning and repeat the parsing:-

RANGE 1 WATCH ID = 1 PREVIOUS ID = 0 FILENAME range1watch1.jpg WATCH DESCRIPTION = Description 1

RANGE 1 WATCH ID = 2 PREVIOUS ID = 1 FILENAME range1watch2.jpg WATCH DESCRIPTION = Description 2

RANGE 1 WATCH ID = 3 PREVIOUS ID = 2 FILENAME range1watch3.jpg WATCH DESCRIPTION = Description 3

RANGE 1 WATCH ID = 5 PREVIOUS ID = 3 FILENAME range1watch5.jpg WATCH DESCRIPTION = Description 5

RANGE 1 WATCH ID = 6 PREVIOUS ID = 5 FILENAME range1watch6.jpg WATCH DESCRIPTION = Description 6

RANGE 1 WATCH ID = 7 PREVIOUS ID = 6 FILENAME range1watch7.jpg WATCH DESCRIPTION = Description 7

RANGE 1 WATCH ID = 8 PREVIOUS ID = 7 FILENAME range1watch8.jpg WATCH DESCRIPTION = Description 8

RANGE 1 WATCH ID = 1 PREVIOUS ID = 8 FILENAME range1watch1.jpg WATCH DESCRIPTION = Description 1

The last entry is repeated, so it seems the parsing restarts. Seems I am using the wrong approach.

How can I only parse the watch childNodes based on one range ID. For example, if I want all watch childNodes for range attribute 2, I only want to parse 3 childNodes.

Please help if you can. thanks :)

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