Bad performance with video skipping
GoogleCodeExporter opened this issue · comments
Google Code Exporter commented
Hi.
Video skipping logic causes very laggy playback. On my Galaxy Nexus a 1.4Mbps
xvid file was playing very sluggishly (constant slow-downs, speed-ups and frame
drops) until I undefined BROOV_VIDEO_SKIP. After I've rebuilt the player
without video skipping support the playback became excellent (I tried version
1.2 with Neon support).
Original issue reported on code.google.com by sergey.e...@gmail.com
on 1 Jan 2012 at 11:43
Google Code Exporter commented
Problem Acknowledged. Need a better video skip algorithm implementation.
Will release the next version for this issue, if some one can provide one.
Thanks,
Aatral
Original comment by aatrala
on 2 Jan 2012 at 1:45
- Changed state: Accepted
Google Code Exporter commented
Sorry for the noob question, why we need video skipping?
Original comment by g.iucul...@gmail.com
on 8 Jan 2012 at 11:58
Google Code Exporter commented
A video file consists of Frames.
Let us consider a video file with a frame rate of 25 Per second.
We need to show 25 Frames in each second. Which essentially means we need to
show a frame every 40 milliseconds.
Following actions are required to show a frame to screen.
a) Read the frame from file
b) Decode the frame using FFmpeg(relevant decoder is used to read the
corresponding codec, if compressed then more time is needed)
c) Modify the frame to a format suitable for showing on the screen.
d) Copy the frame and put it on screen.
Whenever, we are in a lagging condition, where the time taken to show a frame
to screen is greater than 40ms(in this example), we need to skip video frames
to make audio and video in sync and a better user experience.
Mobile processors are considerably slow when compared to desktop processors
Hence any optimization in step(a) to step (d) or any improvements in this area
is most welcome.
Original comment by aatrala
on 5 Feb 2012 at 2:39
Google Code Exporter commented
Sorry for the delayed response earlier. I didn't enable the email notification
earlier.
Original comment by supp...@broov.in
on 3 May 2012 at 8:25
Google Code Exporter commented
I have updated Dolphin Player version 2.0 with various bugfixes. Please provide
your feedback
Thanks,
Aatral
Original comment by aatrala
on 15 Jun 2012 at 10:32
- Added labels: Priority-Critical
- Removed labels: Priority-Medium