View Full Version : rewind broken in latest build?
tried the 0ct 15th release, fastforward through trigger while viewing avi works but rewind through trigger does not. wondered if anyone else is experienceing this?
I've been having the same problem, when I try to rewind sometimes it does nothing, fast forwards, or actually does what its supposed to.
anyone else? i didnt see this listed as a bug at the sourceforge list so I am not sure if it is an isolated case....
linuxares
2006-11-03, 14:16
same problem here, its been a problem since after version 2.0 for me.
in both dvdplayer and mplayer?
Yes, it seems to have a tendancy to happen in .avi files. In some .avi movies rewind is broken, and in some both rewind and fast-forward are broken.
Well it _does_ still work for me, only I wouldn't call it smooth. FFW works like it should, REW seems to jump and jerk a whole lot more. Skipping with directional pad is still ok.
nightspd
2006-11-09, 08:10
I have the same problem and I'm wondering if perhaps it has to do w/the fact that my network setup is entirely wireless. There's so much bandwith and when you're trying to rewind WHILE the xbox is attempting to buffer more data might be too much for the net to handle...anyone having this problem in a 'wired' setup?
Yeah, I stream over both wireless and wired, and I've noticed that over wireless, rewind does not work, or is very choppy. Wired is fine.
and nobody have yet given me any clear indication on what player this affects. I'd doubt it affects all.
i only watch divx/xvid so it is in mplayer for sure. it isnt broken completely, if i partially press left trigger i can rewind at 4x but not at full speed and is very erratic....
ManicMechanic
2006-11-15, 08:24
I would just like to confirm that I was having the same problem with rewinding avi's (whether they reside on my hard drive or on my wired network), as soon as I upgraded to 2.0 and again with 2.0.1.
I've since downgraded to a pre-2.0 release
Hopefully this gets fixed soon and thanks for all the great work so far!
TheEvilHammer
2006-11-30, 06:33
I'm seeing this problem as well (in 2.0.1), but it's a little different than what others are reporting. When I try to rewind an MPEG or WMV file (using the rewind button on the DVD remote), the media file exits playback and I am returned to the file listing. However, rewinding works correctly for DVD's and AVI's.
johnnygal
2006-12-01, 00:10
Me too. Build 2.0.1
Rewinding works ok on avis.
When trying to rewind on mpgs, the screen pauses - when I release the trigger, it carries on actually ahead of where it was when I pressed the trigger (like it was still running normal speed)
For info, pressing left on the thumbpad has the mpg jump backwards ok.
TheEvilHammer
2006-12-05, 05:42
In some of my MPEG's, rewind exits playback completely; in others, it actually fast forwards or does nothing at all. Rewinding and fast forwarding seems to work properly in AVI's, except for 32x rewind, which seems to fast forward or do nothing.
mplayer doesnt natively support ffwd or rwd. so, xbmc has some hacks in place to simulate these functions. they've kind of been forgotten and havent been updated in a while since the seeking with the dpad and remote directional buttons works so much better.
but I believe this can be fixed. as fast forward through trigger works fine. it is just rewind that is broken.
im just explaining why this gets very little attention. someone should open a bug on sf.net if there already isnt one. and if you think you fix it, then by all means please do so.
TheEvilHammer
2006-12-05, 17:44
Submitted as bug 1609314.
jmarshall
2006-12-06, 01:31
Name one piece of software that DOES rewind non-mpeg2 sources.
Hint: There isn't any, for very good reason: Most codecs are designed to be played forward only. This is the issue at hand. Fast forward works nicely as it's going in the direction the codec expects.
Perhaps it can still be improved, sure. Just don't expect it to ever be fantastic.
Cheers,
Jonathan
TheEvilHammer
2006-12-06, 04:22
Yes, I understand the technical nature of the issue at hand. However, I've noticed that skipping around in the file (using the arrow keys on the DVD remote) works exceptionally well; isn't rewinding just a special case of skipping (albeit with smaller skips)?
jmarshall
2006-12-06, 04:39
Except, for the (rather non-trivial) complication of having to display a frame every now and then, sure.
TheEvilHammer
2006-12-06, 05:03
Well, when you skip (forwards or backwards), the file immediately starts rendering again. Couldn't "rewind" be a sequence of skip, render one frame, skip, render one frame, skip, ad infinitum... ?
jmarshall
2006-12-06, 06:01
Yes, that is the technique.
wich is actually the technique we use. problem being you can only seek to keyframes (wich in mpeg4 doesn't have to be very often at all). finding the keyframes is another problem. not all containers index where keyframe is, so then it's just a guess. then you have to read forward untill you find a keyframe wich can mean you have to scan through/attempt to decode quite a few frames untill you find that keyframe. it's a pain to get working properly.
TheEvilHammer
2007-05-29, 23:14
Maybe the whole concept of rewinding/fast forwarding video files should be re-thought? "Skipping" through video files (using the arrow keys) works really well; maybe rewinding/fast forwarding could use the same technique as skipping?