Flash player audio sync problem..

mykrob · 09-07-2004, 10:23 AM

Just wondering, has anyone found a fix to the problem of the flash player not syncing audio to the pictures? Seems to not be a browser issue, as it does the same thing in Konqeuror and Mozilla with Flash Player 6 and 7

thanks,
-myk

win32sux · 05-24-2006, 01:30 AM

hi. just wondering if anyone has a workaround for this. i can't get the audio and video to sync properly even with the latest version of the flash plugin. does anyone have any details as to what the root cause of this is? is it a bug in the flash plugin itself which macromedia/adobe can't fix or something? it's really annoying to not be able to sync properly... i myself posted about this over a year ago, and this thread here is almost two years old... i'd actually be very surprised if by now someone, somewhere hasn't come-up with a solution...

jlo_sandog · 05-24-2006, 03:59 AM

I never had problems with flash, but before the last couple of kernel updates I used to have very bad sync issues with mplayer. As I mentioned, the latest kernel seems to have corrected the issue.

win32sux · 05-24-2006, 04:03 AM

Quote:

Originally Posted by jlo_sandog

I never had problems with flash, but before the last couple of kernel updates I used to have very bad sync issues with mplayer. As I mentioned, the latest kernel seems to have corrected the issue.

so when you watch a flash streaming movie your audio and video are in sync?? what's your setup look like?? kernel version, distro version, etc...

i'm on slackware 10.2 with kernel 2.4.33-pre3 and alsa 1.0.10 on a 1.2ghz athlon (c-media 8738 sound card) - but i've been having this problem since WAY back...

Code:

bash-3.00$ /sbin/lspci | grep audio
00:0f.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
bash-3.00$ /sbin/lsmod | grep snd
snd-seq-oss            23808   0 (unused)
snd-seq-midi-event      3040   0 [snd-seq-oss]
snd-seq                34992   2 [snd-seq-oss snd-seq-midi-event]
snd-pcm-oss            36832   0
snd-mixer-oss          12344   2 [snd-pcm-oss]
snd-cmipci             17568   6
snd-pcm                53960   1 [snd-pcm-oss snd-cmipci]
snd-opl3-lib            5796   0 [snd-cmipci]
snd-hwdep               4320   0 [snd-opl3-lib]
snd-timer              13668   1 [snd-seq snd-pcm snd-opl3-lib]
snd-mpu401-uart         3120   0 [snd-cmipci]
snd-rawmidi            12448   0 [snd-mpu401-uart]
snd-seq-device          3828   0 [snd-seq-oss snd-seq snd-opl3-lib snd-rawmidi]
snd                    32740   2 [snd-seq-oss snd-seq-midi-event snd-seq snd-pcm
-oss snd-mixer-oss snd-cmipci snd-pcm snd-opl3-lib snd-hwdep snd-timer snd-mpu40
1-uart snd-rawmidi snd-seq-device]
soundcore               3396   8 [snd]
snd-page-alloc          5172   0 [snd-seq-oss snd-seq snd-mixer-oss snd-pcm snd-
hwdep snd-timer snd-rawmidi snd-seq-device snd]
bash-3.00$ ls /var/log/packages/ | grep alsa
alsa-driver-1.0.10_2.4.33-pre3-i486-2win32sux
alsa-lib-1.0.10-i486-2win32sux
alsa-oss-1.0.10-i486-2win32sux
alsa-utils-1.0.10-i486-2win32sux
bash-3.00$ uname -a
Linux darkstar 2.4.33-pre3 #1 Sat May 13 22:05:09 EST 2006 i686 unknown unknown GNU/Linux

when you say "latest kernel" i assume you are refering to the 2.6.x.y tree right??

maybe i should try with the ubuntu live cd (it uses kernel 2.6.x.y) to see if the problem doesn't occur there... hmmm...

win32sux · 05-25-2006, 06:05 AM

well, i tried with the ubuntu dapper flight 7 live cd and the flash audio/video sync was perfect... i assume then that the problem only occurs when one is using kernel 2.4... that's good news i guess...

Thermodynamic · 05-31-2006, 06:01 PM

I've got the same problem too.

It's happened under Fedora Core 5 and SuSE Linux 9.x, 10.0, and 10.1.

NVidia 5900 video
SB Audigy sound card
1GB RAM
3com 3c905b NIC
80GB hard drive

bhmcintosh · 06-02-2006, 07:32 AM

Same problem here... Slack 10.2, Dropline Gnome 2.14, 2.6.15, latest Flash7 plugin. From what I've read on Macromedia's, er, Adobe's site (don't have a URL handy for the discussion), this is a known, longstanding, unresolved issue with the Linux Flash player. Hopefully it'll be resolved in the 8.5 player due out later this year (no 8.0 for Linux, as according to Adobe 8.5 is coming so soon after 8.0 that they just decided to skip to the end :-) ).

win32sux · 06-02-2006, 05:09 PM

darn, i thought it would simply be a kernel version issue... but if you guys are having the problem with kernel 2.6, then i guess that's not it anymore... so could it perhaps be a library version issue?? i see it links to libc and a lot of X11 libs...this is on my slackware 10.2 box (kernel 2.4), where the sync does NOT work properly BTW:

Code:

bash-3.00$ ldd /usr/lib/firefox-1.5.0.3/plugins/libflashplayer.so 
        libpthread.so.0 => /lib/libpthread.so.0 (0x402e1000)
        libm.so.6 => /lib/libm.so.6 (0x40332000)
        libdl.so.2 => /lib/libdl.so.2 (0x40356000)
        libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x4035a000)
        libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40424000)
        libXt.so.6 => /usr/X11R6/lib/libXt.so.6 (0x40432000)
        libXmu.so.6 => /usr/X11R6/lib/libXmu.so.6 (0x40483000)
        libc.so.6 => /lib/libc.so.6 (0x40499000)
        /lib/ld-linux.so.2 (0x80000000)
        libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x405b3000)
        libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x405bb000)

win32sux · 08-02-2006, 10:11 AM

it's weird, while the sync was perfect when running ubuntu live, after installing ubuntu for real now the sync is messed-up again... i'm on ubuntu 6.06 LTS... anyone been able to find a workaround for this yet?? i tried using alsa-oss but no luck...

win32sux · 09-03-2006, 10:10 AM

Quote:

We won't be seeing it until early 2007, but Adobe is hard at work on bringing Flash Player 9 to Linux. In a series of recent blog postings, Adobe's lead engineer on the Flash Player team, Mike Melanson, has been keeping the Linux community up to date with Adobe's plans.

Adobe's main goal is to create a Flash Player 9 that is feature-comparable to its Windows and MacOS offerings. Another, according to a recent interview with Melanson, is to enable proper audio/video synchronization. In the last version of Flash that was available for Linux, Flash Player 7, this was a significant problem.

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