Does not always complete file transfer from USB

[XDelusion]

Has anyone else experienced this? Slow and or incomplete transfer of large files from a USB drive or SD card to the Mac's internal HD?

Seems to happen to me a LOT! Either the file fails and MorphOS asks if I'd like the unfinished file to be deleted, or if it does transfer, it is slower than on my PC. Last I checked the eMac has USB 2.0 correct?

[Cammy]

It's odd, but some file transfers from certain USB devices through Aros on my laptop seem to perform the same. Though when I use the same devices on the OS3.1 A1200 there's no problem at all. I put it down to either the new, and not completely bug-free Aros version of Poseidon or the FAT/NTFS filesystem drivers. I doubt it's the hardware since transfers are fine through Linux and there's no way the Subway in an old A1200 is faster than a modern PC.

[Karlos]

How large are we talking?

[XDelusion]

Divx files, 700Mb or more. Nothing too big by today's standards. I'd figure the eMac would handle such things fine.

Naturally playing movies from a USB device is out of the question.

[tone007]

Naturally playing movies from a USB device is out of the question.

I do it all the time.

[B00tDisk]

Naturally playing movies from a USB device is out of the question.

Why?  I do it all the time.

[XDelusion]

That's what I'm here trying to figure out. If I play from USB, the audio and video is always out of sync.

In fact if I play a video off the hard drive and pause & resume it too much, it will also, eventually go out of sync.

What hardware you using?

[B00tDisk]

That's what I'm here trying to figure out. If I play from USB, the audio and video is always out of sync.

In fact if I play a video off the hard drive and pause & resume it too much, it will also, eventually go out of sync.

What hardware you using?

Sorry; it was a general statement.  I've done it on crap single core laptops (2.2ghz Celeron, 1.4ghz P4), desktops, and dedicated dvd players that have a USB port built in.  I've seen it done on dual-core Intel Macs.  I apologize, I realize this isn't very helpful.

Still, the eMac is in league processor-wise with the older machines I've done it on, so it's a bit of a headscratcher.

[XDelusion]

And for the note, this is for MorphOS and not AROS. I'm not sure if there is AROS for PPC, but I figured I'd point that out.

[Fab]

That's what I'm here trying to figure out. If I play from USB, the audio and video is always out of sync.

In fact if I play a video off the hard drive and pause & resume it too much, it will also, eventually go out of sync.

What hardware you using?

Well, what kind of video, what resolution/format/bitrate? If you play 720p H264 stuff on a 1.25GHz machine, it will be a bit too short, and thus go out of sync (unless you enable framedrop, but it doesn't help a lot in this case).

Playing a video from USB can add a slight overhead, but unless you get a really low transfer speed or that you play a too demanding movie, it shouldn't matter. At least it doesn't here, even on my peg2 with usb1 (as long as the bitrate is below the usb1 transfer speed .

[XDelusion]

I'm not home right now, but the videos are not that demanding, low res and all that jazz. Should work fine as they work flawlessly on my Classic XBOX in XBMC, and we all know the XBOX does not have much in the way of RAM and speed.

[platon42]

It's odd, but some file transfers from certain USB devices through Aros on my laptop seem to perform the same. Though when I use the same devices on the OS3.1 A1200 there's no problem at all. I put it down to either the new, and not completely bug-free Aros version of Poseidon or the FAT/NTFS filesystem drivers. I doubt it's the hardware since transfers are fine through Linux and there's no way the Subway in an old A1200 is faster than a modern PC.

Both MorphOS and AROS practically share the same low-level driver (pciusb.device). There could be a bug, but without being reproducable and USB analyzer hardware (no longer have it), it would be hard to track down.

[XDelusion]

That's what I'm figuring, maybe a bug in the MorphOS side of things...

Though other MorphOS users are not experiencing this? STRANGE!