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Old 03-03-2005, 01:54 AM   #1
yyjjll
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Default video player?

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Hi, has anyone ever seen a J2ME video player for the Blackberry device? Anyone can point to me some helpful resources?

Thanks a lot. -Yi
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Old 03-03-2005, 03:24 AM   #2
Mark Rejhon
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The only time I saw video on BlackBerry was .jam files (Java movie) that were originally designed for other J2ME cellphones than the BlackBerry. (You can install midlets on BlackBerry too, like a Nokia cellphone java video on a BlackBerry)

From the BlackBerry video that I have seen, I should mention realistically, for a player, for simple 2/3rd screen video, expect only 2-3 frames per second on most BlackBerries, with about maybe up to 10 frames per second on the new model 7250, which has the fastest CPU. These are only rough guesstimates, though.

BlackBerry Benchmarks
http://www.blackberryforums.com/viewtopic.php?t=4269

All future BlackBerries will have faster CPU's so you may have a lead time writing a video player. It is kind of early, BlackBerry is not yet quite ready for video, but the CPU and network is "getting there". If, and when, an EV-DO upgrade is released for the BlackBerry model 7250, you could probably stream video realtime at semi-smooth framerates on a 7250!

There's a gotcha: You cannot do custom audio on any BlackBerry yet. So you'd have video with no audio. Unless RIM releases an upgrade that fixes this for the newer models of BlackBerries (the 32meg-plus models).

Again, it's kind of early to begin writing a video player.... but I can vouch that it's going to "get there".
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Old 03-07-2005, 01:57 AM   #3
yyjjll
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Default audio?

Mark, could you explain in a bit more detail why audio cannot be done by developers? I know the new devices can play .mid files. With customer audio codecs, what could prohibit audio from working? Thanks.
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Old 03-17-2005, 12:16 PM   #4
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The main issue would likely be full API access to the BlackBerry audio, probably a heavily-restricted API.

This is probably the most doable in the 7100 series, which has ADPCM (WAV-style) support... And theoretically anything can be converted to ADPCM on the fly. However, I don't think there's direct API access to the audio.

You my want to ask RIM about this?
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