Thanks for all your help everyone. I have a faint idea of what i need to do based off ur hints .... ill work on it and will keep u posted ... On Sun, Aug 3, 2008 at 8:19 PM, Zhao Liang-E3423C <E3423C at motorola.com>wrote: > so what's the rootcause of stutter? Is it caused by data drop or playing > unsmoothly by audio driver? > > 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. > > Zhao Liang > ------------------------------ > *From:* gstreamer-embedded-bounces at lists.sourceforge.net [mailto: > gstreamer-embedded-bounces at lists.sourceforge.net] *On Behalf Of *Dennis > Fleming > *Sent:* Saturday, August 02, 2008 4:19 AM > *To:* gstreamer-embedded at lists.sourceforge.net > *Subject:* Re: noise and stuttering > > 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 > > ----- Original Message ---- > From: Jan Schmidt <thaytan at noraisin.net> > To: Raj Swaminathan <rajshyam at gmail.com> > Cc: gstreamer-embedded at lists.sourceforge.net > Sent: Friday, August 1, 2008 12:08:27 PM > Subject: Re: 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 <rajshyam at gmail.com> > > 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 > > <dcharlesm at gmail.com> 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 > > <rajshyam at gmail.com> 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 > > <thaytan at noraisin.net> 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 <thijsvermeir at gmail.com> > > >> > To: Dennis Fleming <arsantiqua at sbcglobal.net> > > >> > Cc: gstreamer-embedded at lists.sourceforge.net > > >> > Sent: Tuesday, July 29, 2008 3:59:30 PM > > >> > Subject: Re: noise and stuttering > > >> > > > >> > Hi, > > >> > > > >> > On Tue, Jul 29, 2008 at 5:43 PM, Dennis Fleming > > >> > <arsantiqua at sbcglobal.net> 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] > > >> > > > >> > > > > http://webcvs.freedesktop.org/gstreamer/gstreamer/docs/design/draft-latency.txt?view=markup > > >> > > > >> > > > > >> > > Dennis > > >> > > > > >> > > ----- Original Message ---- > > >> > > From: Thijs Vermeir <thijsvermeir at gmail.com> > > >> > > To: Zhao Liang-E3423C <E3423C at motorola.com> > > >> > > Cc: Dennis Fleming <arsantiqua at sbcglobal.net>; > > >> > > gstreamer-embedded at lists.sourceforge.net > > >> > > Sent: Tuesday, July 29, 2008 2:46:42 AM > > >> > > Subject: Re: noise and > > stuttering > > >> > > > > >> > > Hi, > > >> > > > > >> > > On Tue, Jul 29, 2008 at 11:15 AM, Zhao > > Liang-E3423C > > >> > <E3423C at motorola.com> > > >> > > 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: > > gstreamer-embedded-bounces at lists.sourceforge.net > > >> > >> > > [mailto:gstreamer-embedded-bounces at lists.sourceforge.net] > On Behalf > > >> > Of > > >> > >> Dennis Fleming > > >> > >> Sent: Tuesday, July 29, 2008 4:37 AM > > >> > >> To: gstreamer-embedded at lists.sourceforge.net > > >> > >> Subject: 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 > > >> > >> > > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > >> > >> > > _______________________________________________ > > >> > >> Gstreamer-embedded mailing list > > >> > >> Gstreamer-embedded at lists.sourceforge.net > > >> > >> > > > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > >> > >> > > >> > >> > > >> > > > > >> > > > >> > > > >> > > > > ------------------------------------------------------------------------- > > >> > 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 > > >> > > > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > >> > _______________________________________________ > > Gstreamer-embedded > > >> > mailing list > > Gstreamer-embedded at lists.sourceforge.net > > >> > > > > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > >> -- > > >> Jan Schmidt <thaytan at noraisin.net> > > >> > > >> > > >> > > > ------------------------------------------------------------------------- > > >> 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 > > >> > > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > >> _______________________________________________ > > >> Gstreamer-embedded mailing list > > >> Gstreamer-embedded at lists.sourceforge.net > > >> > > > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > > > > > > > > > > > ------------------------------------------------------------------------- > > > 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 > > > > > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > > _______________________________________________ > > > Gstreamer-embedded mailing list > > > Gstreamer-embedded at lists.sourceforge.net > > > > > > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------- > > 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 > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > _______________________________________________ Gstreamer-embedded > mailing list Gstreamer-embedded at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > -- > Jan Schmidt <thaytan at noraisin.net> > > > ------------------------------------------------------------------------- > 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 > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Gstreamer-embedded mailing list > Gstreamer-embedded at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > > ------------------------------------------------------------------------- > 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 > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > 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