<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=utf-8"> <STYLE type=text/css></STYLE> <META content="MSHTML 6.00.2800.1611" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left>so what's the rootcause of stutter? Is it caused by data drop or playing unsmoothly by audio driver?</DIV> <DIV dir=ltr align=left> </DIV> <DIV dir=ltr align=left>From your test on OSSink, it seems decoder is slower than playback, and gstaudiosink drop data and always output zero data. I think you need open some logs (such as ossink) to  get accurate information, and find the rootcause.</DIV> <DIV dir=ltr align=left> </DIV> <DIV dir=ltr align=left>Zhao Liang</DIV> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> From: gstreamer-embedded-bounces@lists.sourceforge.net [mailto:gstreamer-embedded-bounces@lists.sourceforge.net] On Behalf Of Dennis Fleming Sent: Saturday, August 02, 2008 4:19 AM To: gstreamer-embedded@lists.sourceforge.net Subject: Re: [gst-embedded] noise and stuttering </DIV> <DIV></DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif"> <DIV>It's interesting that I am getting the opposite problem.  Ie. stutters for wav and not for MP3.  It looks like we were optimizing internal buffers for 44.1 kHz.  However, 22.05kHz had problems with buffer-time=10000 and latency-time=100.  Going back to the defaults 220xkHz worked but 44.1 was sensitive to activity on the system.  I'll try the sync fix to see what happens on my device. Dennis </DIV> <DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif"> <DIV style="FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica,sans-serif">----- Original Message ---- From: Jan Schmidt <thaytan@noraisin.net> To: Raj Swaminathan <rajshyam@gmail.com> Cc: gstreamer-embedded@lists.sourceforge.net Sent: Friday, August 1, 2008 12:08:27 PM Subject: Re: [gst-embedded] noise and stuttering On Fri, 2008-08-01 at 13:51 -0500, Raj Swaminathan wrote: > > Can u also explain why the async fix helped ? It helps because it deactivates the clock-synching in the audiosink, which means that the file plays at the speed it manages to read, decode and output the samples -> that's slower than real-time in this case, which is why you're getting 'stuttering'. Measure how long the file takes to play with 'time' compared to the duration of the file. J. > > On Fri, Aug 1, 2008 at 1:23 PM, Raj Swaminathan <<A href="mailto:rajshyam@gmail.com" ymailto="mailto:rajshyam@gmail.com">rajshyam@gmail.com</A>> > wrote: >        >        Hey Dan, >        >        That worked ... its stuttering .. but keeps playing  .... >        thanks a ton ! >        >        osssink: wav file play fine >                      mp3 files, http links stutter but output sound >        when buffer-time=1000 latency-time=100 sync=false >        >                  >        Is there any such fix for esdsink ?? >        Are there more properties that can be modified to stop the >        stuttering ?? >        >        regards, >        raj >        >        >        >        >        On Fri, Aug 1, 2008 at 12:52 PM, Daniel Charles >        <<A href="mailto:dcharlesm@gmail.com" ymailto="mailto:dcharlesm@gmail.com">dcharlesm@gmail.com</A>> wrote: >                Hi Raj, >                >                Have you tried sync=false in the osssink?  I'm not >                sure that this is >                within your purposes but in some cases that removes >                the glitches. >                >                Daniel. >                >                >                On Fri, Aug 1, 2008 at 12:41 PM, Raj Swaminathan >                <<A href="mailto:rajshyam@gmail.com" ymailto="mailto:rajshyam@gmail.com">rajshyam@gmail.com</A>> wrote: >                > >                > Hi everyone, >                > >                > Im having stuttering and stopping issues with >                gstreamer on the OMAP 2430... >                > I am using an NFS mounted file system via >                ethernet ... >                > >                > osssink: WAV files play without an issue. >                >              mp3 files output sound and stop after >                a few seconds if i set >                > buffer-time=1000 and latency-time=100 >                >              mp3 files do not output sound without >                the settings above. >                >              streaming music from http links do not >                work under any >                > setting. >                > >                > esdsink: WAV files do not play. >                >              mp3 files play nicely. >                >              streaming music from http links output >                sound and stop after a >                > few seconds. >                > >                > My sources: filesrc, souphttpsrc >                > My decoders: wavparse, mad >                > >                > Ive experimented with placing queues before decoding >                and before sending >                > audio to the sink. Trying both ways or either/or, do >                not impact the output >                > signifcantly. >                > Can anyone provide some suggestions? >                > >                > Thanks for your help so far. >                > >                > regards, >                > raj >                > >                > On Thu, Jul 31, 2008 at 4:42 AM, Jan Schmidt >                <<A href="mailto:thaytan@noraisin.net" ymailto="mailto:thaytan@noraisin.net">thaytan@noraisin.net</A>> wrote: >                >> >                >> On Wed, 2008-07-30 at 08:50 -0700, Dennis Fleming >                wrote: >                >> > First off: Thank to you and Zhoa-Lang for getting >                back so quickly. >                >> > I'm so busy I forgot my manners. >                >> > >                >> > Testing to find the parameters I have I used >                decodebin, but in the >                >> > program itself uses playbin with the same effect. >                The only variation >                >> > is that I set the sink property to alsasink since >                that seems the only >                >> > way to set buffer-time and latency-time >                properties.  Also, it seems >                >> > counter-intuitive to me that an uncompressed WAV >                file should have >                >> > problems keeping up while MP3s with the same >                sampling frequency and >                >> > word size have none.  And yet the artifacts are >                indicative of dropped >                >> > buffers. >                >> >                >> If the bottleneck is retrieving data from the input >                location, then it's >                >> entirely feasible. What's your data store? SD card, >                NFS? A WAV file >                >> might be 10 or more times more data to read and >                cause read stalls, where >                >> the smaller mp3 can be read in fine and decoded in >                memory with no >                >> further problems. >                >> >                >> J. >                >> >                >> > Dennis >                >> > >                >> > >                >> > ----- Original Message ---- >                >> > From: Thijs Vermeir <<A href="mailto:thijsvermeir@gmail.com" ymailto="mailto:thijsvermeir@gmail.com">thijsvermeir@gmail.com</A>> >                >> > To: Dennis Fleming <<A href="mailto:arsantiqua@sbcglobal.net" ymailto="mailto:arsantiqua@sbcglobal.net">arsantiqua@sbcglobal.net</A>> >                >> > Cc: <A href="mailto:gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:gstreamer-embedded@lists.sourceforge.net">gstreamer-embedded@lists.sourceforge.net</A> >                >> > Sent: Tuesday, July 29, 2008 3:59:30 PM >                >> > Subject: Re: [gst-embedded] noise and stuttering >                >> > >                >> > Hi, >                >> > >                >> > On Tue, Jul 29, 2008 at 5:43 PM, Dennis Fleming >                >> > <<A href="mailto:arsantiqua@sbcglobal.net" ymailto="mailto:arsantiqua@sbcglobal.net">arsantiqua@sbcglobal.net</A>> wrote: >                >> > > The interesting thing is that uncompressed WAV >                files are causing the >                >> > problem >                >> > > while MP3s were fixed by setting the >                buffer-time and latency-time to >                >> > values >                >> > > smaller than found on a desktop.  What would >                adding a queue do to >                >> > latency >                >> > > through the system? >                >> > >                >> > There is no latency in this case because there >                are no live-sources. >                >> > [1] >                >> > >                >> > > Also, I suppose, that I will need to break up >                the >                >> > > playbin and create a pipeline myself, yes? >                >> > >                >> > playbin has the queue elements on the correct >                location, no changes >                >> > needed. >                >> > You where already using a custom pipeline, no? >                >> > >                >> > Gr, >                >> > >                >> > [1] >                >> > >                >> > >                <A href="http://webcvs.freedesktop.org/gstreamer/gstreamer/docs/design/draft-latency.txt?view=markup" target=_blank>http://webcvs.freedesktop.org/gstreamer/gstreamer/docs/design/draft-latency.txt?view=markup</A> >                >> > >                >> > > >                >> > > Dennis >                >> > > >                >> > > ----- Original Message ---- >                >> > > From: Thijs Vermeir <<A href="mailto:thijsvermeir@gmail.com" ymailto="mailto:thijsvermeir@gmail.com">thijsvermeir@gmail.com</A>> >                >> > > To: Zhao Liang-E3423C <<A href="mailto:E3423C@motorola.com" ymailto="mailto:E3423C@motorola.com">E3423C@motorola.com</A>> >                >> > > Cc: Dennis Fleming <<A href="mailto:arsantiqua@sbcglobal.net" ymailto="mailto:arsantiqua@sbcglobal.net">arsantiqua@sbcglobal.net</A>>; >                >> > > <A href="mailto:gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:gstreamer-embedded@lists.sourceforge.net">gstreamer-embedded@lists.sourceforge.net</A> >                >> > > Sent: Tuesday, July 29, 2008 2:46:42 AM >                >> > > Subject: Re: [gst-embedded] noise and >                stuttering >                >> > > >                >> > > Hi, >                >> > > >                >> > > On Tue, Jul 29, 2008 at 11:15 AM, Zhao >                Liang-E3423C >                >> > <<A href="mailto:E3423C@motorola.com" ymailto="mailto:E3423C@motorola.com">E3423C@motorola.com</A>> >                >> > > wrote: >                >> > >> What's the rootcause of noise and stuttering ? >                >> > > >                >> > > Now you are using only 1 thread for all the >                elements and if the >                >> > > filesrc or the decoder is too slow sometimes >                >> > > you don't have time to catch up. By adding the >                queue you put the >                >> > sink >                >> > > in another thread and now the filesrc+decoder >                can >                >> > > do some decoding in advance. >                >> > > >                >> > > Gr, >                >> > > Thijs >                >> > > >                >> > >> >                >> > >> For normal playback, it should not have >                issues. If decoder didn't >                >> > drop >                >> > >> data, I think alsasink did it. >                >> > >> By gstaudiosink mechanism, it will drop data >                replaced with blank >                >> > data when >                >> > >> data is late. I guess the rootcause is that. >                >> > >> >                >> > >> If that, I have no ideas except adding a queue >                before alsasink, and >                >> > when >                >> > >> queue is empty, pause the pipeline, it will >                not cause dropout, but >                >> > still >                >> > >> discontinous. >                >> > >> >                >> > >> Zhao liang >                >> > >> ________________________________ >                >> > >> From: >                <A href="mailto:gstreamer-embedded-bounces@lists.sourceforge.net" ymailto="mailto:gstreamer-embedded-bounces@lists.sourceforge.net">gstreamer-embedded-bounces@lists.sourceforge.net</A> >                >> > >> >                [mailto:<A href="mailto:gstreamer-embedded-bounces@lists.sourceforge.net" ymailto="mailto:gstreamer-embedded-bounces@lists.sourceforge.net">gstreamer-embedded-bounces@lists.sourceforge.net</A>] On Behalf >                >> > Of >                >> > >> Dennis Fleming >                >> > >> Sent: Tuesday, July 29, 2008 4:37 AM >                >> > >> To: <A href="mailto:gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:gstreamer-embedded@lists.sourceforge.net">gstreamer-embedded@lists.sourceforge.net</A> >                >> > >> Subject: [gst-embedded] noise and stuttering >                >> > >> >                >> > >> I'm trying to create an audio player on an >                IMX31 target and I've >                >> > found a >                >> > >> discrepancy in the output of various formats. >                  If I send MP3 data I >                >> > have >                >> > >> to >                >> > >> set the buffer-time and latency-time to 10000 >                and 100 respectively >                >> > to play >                >> > >> without severe dropouts.  However WAV files >                still have drop-out at >                >> > a >                >> > >> consistent rate (about 1 per 10 sec).  Are >                there some general >                >> > features I'm >                >> > >> missing or is there some guidance on the >                buffer-time/latency time >                >> > that >                >> > >> would >                >> > >> account for this difference? >                >> > >> >                >> > >> Linux 2.6.22.19 >                >> > >> gstreamer 0.10.17 (open-embedded) >                >> > >> gst-launch filesrc location=<file> ! >                decodebin ! alsasink >                >> > >> buffer-time=10000 >                >> > >> latency-time=100 >                >> > >> >                >> > >> Dennis >                >> > >> >                >> > >> >                >> > >                >> > >                ------------------------------------------------------------------------- >                >> > >> This SF.Net email is sponsored by the Moblin >                Your Move Developer's >                >> > >> challenge >                >> > >> Build the coolest Linux based applications >                with Moblin SDK & win >                >> > great >                >> > >> prizes >                >> > >> Grand prize is a trip for two to an Open >                Source event anywhere in >                >> > the >                >> > >> world >                >> > >> >                <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> >                >> > >> >                _______________________________________________ >                >> > >> Gstreamer-embedded mailing list >                >> > >> <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> >                >> > >> >                <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> >                >> > >> >                >> > >> >                >> > > >                >> > >                >> > >                >> > >                ------------------------------------------------------------------------- >                >> > This SF.Net email is sponsored by the Moblin Your >                Move Developer's >                >> > challenge >                >> > Build the coolest Linux based applications with >                Moblin SDK & win great >                >> > prizes >                >> > Grand prize is a trip for two to an Open Source >                event anywhere in the >                >> > world >                >> > >                <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> >                >> > _______________________________________________ >                Gstreamer-embedded >                >> > mailing list >                <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> >                >> > >                <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> >                >> -- >                >> Jan Schmidt <<A href="mailto:thaytan@noraisin.net" ymailto="mailto:thaytan@noraisin.net">thaytan@noraisin.net</A>> >                >> >                >> >                >> >                ------------------------------------------------------------------------- >                >> This SF.Net email is sponsored by the Moblin Your >                Move Developer's >                >> challenge >                >> Build the coolest Linux based applications with >                Moblin SDK & win great >                >> prizes >                >> Grand prize is a trip for two to an Open Source >                event anywhere in the >                >> world >                >> >                <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> >                >> _______________________________________________ >                >> Gstreamer-embedded mailing list >                >> <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> >                >> >                <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> >                > >                > >                > >                ------------------------------------------------------------------------- >                > This SF.Net email is sponsored by the Moblin Your >                Move Developer's challenge >                > Build the coolest Linux based applications with >                Moblin SDK & win great >                > prizes >                > Grand prize is a trip for two to an Open Source >                event anywhere in the world >                > >                <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> >                > _______________________________________________ >                > Gstreamer-embedded mailing list >                > <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> >                > >                <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> >                > >                > >                >        >        > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> > _______________________________________________ Gstreamer-embedded mailing list <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> -- Jan Schmidt <<A href="mailto:thaytan@noraisin.net" ymailto="mailto:thaytan@noraisin.net">thaytan@noraisin.net</A>> ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world <A href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target=_blank>http://moblin-contest.org/redirect.php?banner_id=100&url=/</A> _______________________________________________ Gstreamer-embedded mailing list <A href="mailto:Gstreamer-embedded@lists.sourceforge.net" ymailto="mailto:Gstreamer-embedded@lists.sourceforge.net">Gstreamer-embedded@lists.sourceforge.net</A> <A href="https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded" target=_blank>https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded</A> </DIV></DIV></DIV></BODY></HTML>