Playback problem with big_buck

Discussion:

Playback problem with big_buck_bunny H264 .mov

Juraj Holtak

2012-12-07 12:26:46 UTC

I am using GStreamer 1.0.3-1~ubuntu12.04.1~ppa1 from
https://launchpad.net/~gstreamer-developer
and I noticed frameskips visible in playback of Big Buck Bunny h264 .mov
1080p or 480p video from http://www.bigbuckbunny.org/

Same problem occurs when I use gst-launch with playbin or a self crafted
pipeline.

gst-launch-1.0 -v filesrc location=Downloads/big_buck_bunny_1080p_h264.mov
! qtdemux ! avdec_h264 ! xvimagesink

gstreamer 0.10 from Ubuntu 12.04 and vlc 2.0.4 do not have this problem on
same PC, the playback is fluent.

Can somebody download the video and try to play it if he can reproduce the
problem?

Juraj Holtak

2012-12-07 12:25:35 UTC

Permalink

Tim-Philipp Müller

2012-12-20 00:12:14 UTC

Permalink

On Fri, 2012-12-07 at 13:26 +0100, Juraj Holtak wrote:

Hi,

Post by Juraj Holtak
I am using GStreamer 1.0.3-1~ubuntu12.04.1~ppa1 from
https://launchpad.net/~gstreamer-developer
and I noticed frameskips visible in playback of Big Buck Bunny
h264 .mov 1080p or 480p video from http://www.bigbuckbunny.org/
Same problem occurs when I use gst-launch with playbin or a self
crafted pipeline.
gst-launch-1.0 -v filesrc
location=Downloads/big_buck_bunny_1080p_h264.mov ! qtdemux !
avdec_h264 ! xvimagesink
gstreamer 0.10 from Ubuntu 12.04 and vlc 2.0.4 do not have this
problem on same PC, the playback is fluent.
Can somebody download the video and try to play it if he can reproduce
the problem?

I have tried the 1080p and 480p H.264/mov version and they seem to play
fine for me with gst-launch-1.0 playbin uri=file:///path/to/foo.mov and
1.0.3 and git master. (Your hand-crafted pipeline would probably benefit
from a queue before the xvimagesink.)

Is it supposed to be very noticable? Or does it only happen after a
while (I watched only the beginning)?

Cheers
-Tim

Juraj Holtak

2012-12-20 01:23:07 UTC

Permalink

Hi Tim,

It is noticeable all over the movie and the first scene when the cam pans
down to the meadow is not more than 5 - 8 fps - no fluid motion. It might
get better after few seconds but it is never perfect so if you did not see
any problem there might be something wrong with the ubuntu ppa version as I
can reproduce it on two notebooks with very differnet HW.

I'm using that movie for benchmarking and testing as its free and quite
demanding on the decoder. Not every video player can play it well for some
reason. For example Samsung TV has noticeable artefacts and goes out of
sync 3x in the movie.

J.

Post by Tim-Philipp MÃ¼ller
Hi,

I have tried the 1080p and 480p H.264/mov version and they seem to play
fine for me with gst-launch-1.0 playbin uri=file:///path/to/foo.mov and
1.0.3 and git master. (Your hand-crafted pipeline would probably benefit
from a queue before the xvimagesink.)
Is it supposed to be very noticable? Or does it only happen after a
while (I watched only the beginning)?
Cheers
-Tim
_______________________________________________
gstreamer-devel mailing list
http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel