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A/V sync and stutter issue

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jayasena s

A/V sync and stutter issue

Hi,

I am having A/V Sync and stutter issues , when using totem player with gstreamer.

With gst-launch, audio and video are in sync and video is smooth ( no stutter issue).

Timestamps seem to be good, the stutter is more visible for the first 4 seconds of the playback.

Did anyone come across this issue, Could you suggest ways to debug these issues

Thanks,

Jai

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jayasena s

Re: A/V sync and stutter issue

Could someone help me in debugging and solving this issue.

Thanks,

Jai

--- On Wed, 9/9/09, jayasena s <[hidden email]> wrote:

From: jayasena s <[hidden email]>
Subject: [gst-devel] A/V sync and stutter issue
To: [hidden email]
Date: Wednesday, September 9, 2009, 5:43 AM

Hi,

I am having A/V Sync and stutter issues , when using totem player with gstreamer.

With gst-launch, audio and video are in sync and video is smooth ( no stutter issue).

Timestamps seem to be good, the stutter is more visible for the first 4 seconds of the playback.

Did anyone come across this issue, Could you suggest ways to debug these issues

Thanks,

Jai

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Jan Schmidt-6

Re: A/V sync and stutter issue

On Thu, 2009-09-10 at 11:43 -0700, jayasena s wrote:

>
> Could someone help me in debugging and solving this issue.
>
> Thanks,
> Jai
>
> --- On Wed, 9/9/09, jayasena s <[hidden email]> wrote:
>
>
> From: jayasena s <[hidden email]>
> Subject: [gst-devel] A/V sync and stutter issue
> To: [hidden email]
> Date: Wednesday, September 9, 2009, 5:43 AM
>
> Hi,
> I am having A/V Sync and stutter issues , when using totem
> player with gstreamer.
> With gst-launch, audio and video are in sync and video is
> smooth ( no stutter issue).
>
> Timestamps seem to be good, the stutter is more visible for
> the first 4 seconds of the playback.
>
> Did anyone come across this issue, Could you suggest ways to
> debug these issues
>
> Thanks,
> Jai
>
>
>
> -----Inline Attachment Follows-----
>
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> - and focus on
> what you do best, core application coding. Discover what's new
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--
Jan Schmidt <[hidden email]>

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Jan Schmidt-6

Re: A/V sync and stutter issue

Hi,

On Fri, 2009-09-11 at 11:22 +0100, Jan Schmidt wrote:

Hrmn, my initial reply was lacking somewhat in detail ;)

> On Thu, 2009-09-10 at 11:43 -0700, jayasena s wrote:
> >
*snip*

> > Hi,
> > I am having A/V Sync and stutter issues , when using totem
> > player with gstreamer.
> > With gst-launch, audio and video are in sync and video is
> > smooth ( no stutter issue).
> >
> > Timestamps seem to be good, the stutter is more visible for
> > the first 4 seconds of the playback.
> >
> > Did anyone come across this issue, Could you suggest ways to
> > debug these issues

I'd start by identifying the difference between the pipeline you're
giving gst-launch and what totem is using. Totem (depending on the
version) is using either playbin or playbin2, with the gconf audio and
video sinks.

Cheers,
Jan.

> >
> > Thanks,
> > Jai
> >
> >
> >
> > -----Inline Attachment Follows-----
> >
> > ------------------------------------------------------------------------------
> > Let Crystal Reports handle the reporting - Free Crystal
> > Reports 2008 30-Day
> > trial. Simplify your report design, integration and deployment
> > - and focus on
> > what you do best, core application coding. Discover what's new
> > with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> >
> > -----Inline Attachment Follows-----
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> > ------------------------------------------------------------------------------
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> > trial. Simplify your report design, integration and deployment - and focus on
> > what you do best, core application coding. Discover what's new with
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> > _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

jayasena s

Re: A/V sync and stutter issue

Hi Jan,

Thanks for the suggestions.

I would start debugging the pipeline with gst-launch and totem.

Also, Would like to know, When a buffer with decoded frame is sent using gst_pad_push() to downstream to the xvimagesink , is there any event notification sent back with gst_pad_push() to the upstream elements, when the frame gets rendered at xvimagesink. If not with gst_pad_push(), is there any other API which can be used to send notification to the upstream element, after frame is rendered to the display from the xvimagesink.

Thanks,

Jayasena

--- On Fri, 9/11/09, Jan Schmidt <[hidden email]> wrote:

From: Jan Schmidt <[hidden email]>
Subject: Re: [gst-devel] A/V sync and stutter issue
To: "Discussion of the development of GStreamer" <[hidden email]>
Date: Friday, September 11, 2009, 11:02 PM

Hi,

On Fri, 2009-09-11 at 11:22 +0100, Jan Schmidt wrote:

Hrmn, my initial reply was lacking somewhat in detail ;)

> On Thu, 2009-09-10 at 11:43 -0700, jayasena s wrote:
> >
*snip*

> >    Hi,
> > I am having A/V Sync and stutter issues , when using totem
> >    player with gstreamer.
> >    With gst-launch, audio and video are in sync and video is
> >    smooth ( no stutter issue).
> >
> >    Timestamps seem to be good, the stutter is more visible for
> >    the first 4 seconds of the playback.
> >
> >    Did anyone come across this issue, Could you suggest ways to
> >    debug these issues

I'd start by identifying the difference between the pipeline you're
giving gst-launch and what totem is using. Totem (depending on the
version) is using either playbin or playbin2, with the gconf audio and
video sinks.

Cheers,
Jan.

> >
> >    Thanks,
> >    Jai
> >
> >
> >
> >    -----Inline Attachment Follows-----
> >
> >    ------------------------------------------------------------------------------
> >    Let Crystal Reports handle the reporting - Free Crystal
> >    Reports 2008 30-Day
> >    trial. Simplify your report design, integration and deployment
> >    - and focus on
> >    what you do best, core application coding. Discover what's new
> >    with
> >    Crystal Reports now. http://p.sf.net/sfu/bobj-july
> >
> >    -----Inline Attachment Follows-----
> >
> >    _______________________________________________
> >    gstreamer-devel mailing list
> >    gstreamer-devel@...
> >    https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> > ------------------------------------------------------------------------------
> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> > trial. Simplify your report design, integration and deployment - and focus on
> > what you do best, core application coding. Discover what's new with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> > _______________________________________________ gstreamer-devel mailing list gstreamer-devel@... https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
--
Jan Schmidt <thaytan@...>

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jayasena s

how to generate a custom event

Hi Jan,

How I can send a custom event at xvimagesink and send it an element in the pipeline.

Thanks,

Jayasena

--- On Sat, 9/12/09, jayasena s <[hidden email]> wrote:

From: jayasena s <[hidden email]>
Subject: Re: [gst-devel] A/V sync and stutter issue
To: "Discussion of the development of GStreamer" <[hidden email]>
Date: Saturday, September 12, 2009, 8:05 PM

Hi Jan,

Thanks for the suggestions.

I would start debugging the pipeline with gst-launch and totem.

Also, Would like to know,   When a buffer with decoded frame is sent using gst_pad_push() to downstream to the xvimagesink , is there any event notification sent back with gst_pad_push() to the upstream elements, when the frame gets rendered at xvimagesink. If not with gst_pad_push(), is there any other API which can be used to send notification to the upstream element, after frame is rendered to the display from the xvimagesink.

Thanks,

Jayasena

--- On Fri, 9/11/09, Jan Schmidt <[hidden email]> wrote:

From: Jan Schmidt <[hidden email]>
Subject: Re: [gst-devel] A/V sync and stutter issue
To: "Discussion of the development of GStreamer" <[hidden email]>
Date: Friday, September 11, 2009, 11:02 PM

Hi,

On Fri, 2009-09-11 at 11:22 +0100, Jan Schmidt wrote:

Hrmn, my initial reply was lacking somewhat in detail ;)

> On Thu, 2009-09-10 at 11:43 -0700, jayasena s wrote:
> >
*snip*

> >    Hi,
> > I am having A/V Sync and stutter issues , when using totem
> >    player with gstreamer.
> >    With gst-launch, audio and video are in sync and video is
> >    smooth ( no stutter issue).
> >
> >    Timestamps seem to be good, the stutter is more visible for
> >    the first 4 seconds of the playback.
> >
> >    Did anyone come across this issue, Could you suggest ways to
> >    debug these issues

I'd start by identifying the difference between the pipeline you're
giving gst-launch and what totem is using. Totem (depending on the
version) is using either playbin or playbin2, with the gconf audio and
video sinks.

Cheers,
Jan.

> >
> >    Thanks,
> >    Jai
> >
> >
> >
> >    -----Inline Attachment Follows-----
> >
> >    ------------------------------------------------------------------------------
> >    Let Crystal Reports handle the reporting - Free Crystal
> >    Reports 2008 30-Day
> >    trial. Simplify your report design, integration and deployment
> >    - and focus on
> >    what you do best, core application coding. Discover what's new
> >    with
> >    Crystal Reports now. http://p.sf.net/sfu/bobj-july
> >
> >    -----Inline Attachment Follows-----
> >
> >    _______________________________________________
> >    gstreamer-devel mailing list
> >    gstreamer-devel@...
> >    https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> > ------------------------------------------------------------------------------
> > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> > trial. Simplify your report design, integration and deployment - and focus on
> > what you do best, core application coding. Discover what's new with
> > Crystal Reports now. http://p.sf.net/sfu/bobj-july
> > _______________________________________________ gstreamer-devel mailing list gstreamer-devel@... https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
--
Jan Schmidt <thaytan@...>

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Tim-Philipp Müller-2

Re: A/V sync and stutter issue

In reply to this post by jayasena s

On Sat, 2009-09-12 at 12:05 -0700, jayasena s wrote:

> Also, Would like to know, When a buffer with decoded frame is sent
> using gst_pad_push() to downstream to the xvimagesink , is there any
> event notification sent back with gst_pad_push() to the upstream
> elements, when the frame gets rendered at xvimagesink. If not with
> gst_pad_push(), is there any other API which can be used to send
> notification to the upstream element, after frame is rendered to the
> display from the xvimagesink.

A QoS event is usually sent upstream whenever a frame is rendered. Not
sure how that helps you here though.

Cheers
-Tim

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jayasena s

Re: A/V sync and stutter issue

Hi Tim,

Thanks for the suggestion. I looked into the QOS events and also found a way to send the event upstream using GST_EVENT_CUSTOM_UPSTREAM.

THanks,

Jayasena

--- On Thu, 9/17/09, Tim-Philipp Müller <[hidden email]> wrote:

From: Tim-Philipp Müller <[hidden email]>
Subject: Re: [gst-devel] A/V sync and stutter issue
To: [hidden email]
Date: Thursday, September 17, 2009, 10:41 AM

On Sat, 2009-09-12 at 12:05 -0700, jayasena s wrote:

> Also, Would like to know, When a buffer with decoded frame is sent
> using gst_pad_push() to downstream to the xvimagesink , is there any
> event notification sent back with gst_pad_push() to the upstream
> elements, when the frame gets rendered at xvimagesink. If not with
> gst_pad_push(), is there any other API which can be used to send
> notification to the upstream element, after frame is rendered to the
> display from the xvimagesink.

A QoS event is usually sent upstream whenever a frame is rendered. Not
sure how that helps you here though.

Cheers
-Tim

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