audio stuttering if in sp-dif mode

[sjoertum]

Hello I am new on this forum and like to post a question about this longlasting audio problem.

pent 4 dual cor, 3 ghz, asus x 850 opro videocard asus motherboard, with optical wire to my amp.

if i play hdtv ts files with power dvd it works, if iplay with vlc, everything works perfectly,
then i put my audiodevice on a52/ sp-dif( to get dts audio) sound start to stutter.

i have tried toget new codecs drivers, and other versions of vlc, it consists as a problem.?????
is it somewhere in this forum, a link sghould be enough,
if not , who can help me out?

rgds s

[DJ]

Preferences, Audio, Output modules, from the pull down select "Win32 waveOut extensions output" the press Save and close the player.

[sjoertum]

thx, for your quick reply.

i tried it and now the player chooses sp-dif as standard but i get no sound at all? and if i choose just normal 5.1 my amp applies just 2 speakers?

rgds s

[goatee]

I have also experienced this problem and have tried the solution. I changed from DirectX to waveOut but all I get is softer choppy audio. I know it is not the sound card settings (Creative Audigy set to decode AC3 audio onboard) because PowerDVD 6 has no problem passing audio out and that works. I prefer VLC over PowerDVD though so would like to get this working.

[sjoertum]

excactly!, and the output format, wat should that be on?
there's a whole list of s16, i16 , float 32, and sp-dif, ?

rgds s

[DJ]

http://kxproject.lugosoft.com/index.php?skip=1
Replacement drivers for Creative sound cards

[sjoertum]

thx again for the reply,.

i tried the driver and it didn't work.
it is giving me problems only with vlc. power dvd works perfectly, only i cannot choose between audiostreams.
wich results in a german spoken movie;\.
i am using a realtech high def, audio drver with spdif out, witch i think is giving the problems.

i am clutching at straws here,.

rgds

[DJ]

The problems are reported only with Audigy cards and for most users the drivers fixed the problem. However there was one user to date that the drivers did not fix the problem. It is unknown as to why.

[sjoertum]

thx again for all your troubles,

i have an optical extension on an asus g5dn pro motherboard.

any idear why it is only with vlc?
because for the rest i am very pleased with the prog.

rgds

[DJ]

No! Almost all Players have linked when S/PDIF is on DirectX is off as DirectX causes known timing errors for S/PDIF. VLC does not perform this link. But the options are there and it works for the majority of users and Manufactures of audio cards. In most cases where the user has continued to have problems, updated drivers have resolved the issue.

Also there should be no problem changing audio tracks as long as it's to something S/PDIF supports.

[sjoertum]

again th fo your troubles,

It works now, i played a 264 movie and it adjusted itself, if this is not the reason then i don't know what i did, but it works.

thx for your advise


is it possible to ad srt(subs) with vlc playing ts(hdtv) files??
it is probably an adjustment again.

rgds s

[DJ]

External subs can work with any format but MPEG 1 or 2 is problematic in that there is insufficient timing information to do it properly. Ideally the sub should be in a standard format and have the FPS specified in the header and the sub should be specifically made for the video. While this is not always true for other players that improperly use the framerate of the video as FPS for the sub, this is against the specs for most sub formats.

The only exception at the moment is .sub (not to be confused with VOBSub) that is locked at 25 FPS internally.

[KenX]

I have the same problem. Everything works fine as long as the output is in PCM but in DD or DTS the sound is unbarable.
Everything works just fine in PowerDVD, but as the thread owner noted, one often prefers vlc. It is particularly frustrating when trying to play DTS-CD images, which aren't playble with anything else but VLC..

My sound card is a Creative X-Fi Elite Pro and I'm using the beta drivers. Hopefully the new drivers promised to arrive in a week or so will solve the problem, but I actually fear that the problem is with VLC.
I'm using a spdif coax from the external i/o board into an Arcam AVP700 processor.

I have tried all kinds of combinations of devices and other settings (including the ones mentioned above), but the sound is still stuttering.

[Mertsch]

yeah the SPDIF and especially the DTS support of VLC is not the best
but back to the topic ... the trick from 2nd post did it!
playing AC3 is now stutter free ... thanks !!!

in terms of DTS ... you might try ffdshow as DTS decoder ... I have various kind of DTS stuff and all play quite well with ffdshow

I set ffdshow to output the audio to SPDIF this way you can pass AC3 and DTS to you soundcard or external decoder ...
in some cases the audio (especially DTS) is not in a proper format to be played by Audigy / X-Fi in this case I switch from SPDIF to the libdts decoder which works very well

mediaplayer classic is a good way to make use of ffdshow ... WMP sometimes rejects to play some files

get ffdshow here
http://www.free-codecs.com/download/FFDShow.htm

[rosh1]

I have DTS encoded Audio files which VLC plays over S/PDIF - only the output is in 2 channel i.e PCM. ( Audio Device > Stereo or 2 frt/2 rear/5.1 )

Selecting A/52 over S/PDIF results in silence/ stutter - My Yamaha RXV1400 receiver shows a flickering DTS signal input and no sound.. I have tried whatever was suggested in the 2nd post but no luck

What can I do to remedy this? Ie I want DTS to pass thru to my Yamaha..

And I want to use VLC...

thanks

Rosh

[Mertsch]

DTS --> spdif

this works for well ripped DTS content ... I have some DVDs from AMBRA where I copied the RAW dts stream and they play fine with mpc and x-fi
for "not so perfect" rips you need to enable
uncompressed --> all supported
but this may cause stuttering when using SPDIF ... using libdts here should do fine

when you are sure that the dts works with your hardware and some stutter I am pretty sure you can do nothing about it ...
the AMBRA stuff I had before ripping it myself of the DVD did stutter when decoded by hardware since I did rip it myself with http://www.castudio.org/dvdaudioextractor/ it works perfect

[sjoertum]

I know, i like vlc the most as well,.

the way i did it was: dwnld the latest version of vlc, plus the driverpack specified above, dwnld a x264 movie, play it, before and after installing, the drivers.,
good luck, it took me a while as well, but it's worth it!

rgds

[sjoertum]

MPEG2 / H264
H264 kan softwarematig het snelst gedecodeerd worden door het filter CoreAVC.
TS bestanden, die meestal mpeg2 zijn, kunnen aan elkaar geplakt worden met HDTVtoMPEG2 of het dos prompt commando: copy /b "sourcefile.????.ts" "outputfile.ts". (start run cmd)
MPEG2 kan eventueel hardwarematig geaccelereerd worden met het filter Nvidia Purevideo (deinterlace control=video, deinterlace mode=display fields seperately).

Het is mogelijk ondertitels apart te downloaden (bijv. divxsubtitles.net) en met het filter VobSub bij een HD film te tonen.
Graphedit is handig om te zien welke video/audio/splitter filters je gebruikt en om filters te deïnstalleren, zie hiervoor de Graphedit readme.txt.

Een truucje om te kijken of deze HD film op jouw systeem werkt is om alleen het eerste bestand af te spelen. Als het in rar staat kun je het uitpakken met de optie 'keep broken files'.

[Mertsch]

finally the AC3 filter has been update now playing AC3 and DTS (woot)

with http://ac3filter.net/ winampac3 I can now play my favority ac3 / dts music directly from winamp and over spdif if I want

[sjoertum]

vlc main developed for stream

rgds s

[sjoertum]

hello rosh

this is the same prob as above,.
rgds