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danielgtaylor / arista

Arista Transcoder
http://www.transcoder.org/
GNU Lesser General Public License v2.1
120 stars 19 forks source link

Choppy playback on iPad #79

Closed LinusU closed 13 years ago

LinusU commented 13 years ago

Whenever I convert video with the iPad presets the resulting file plays nice in mplayer/totem. However when I try to play it in Quicktime (on Mac) or on the iPad it plays really choppy. This occurs regardless if I choose low or medium quality.

I have tried with many different files and it's always the same result. However I know that I have managed to convert some files a long time ago on another computer.

AkeemMcLennon commented 13 years ago

I had a similar issue with a custom preset I created for the videos on my website.

I suspect that this to do with a bug in gstreamer that I found earlier at https://bugzilla.gnome.org/show_bug.cgi?id=624212

Presumably, this bug has already been resolved in the most recent release of gstreamer, but it still seems to be present in the version that ships with most distributions. In the meantime, I have disabled bframes in my own preset as a workaround to this issue, but this is only a temporarily solution to the problem.

LinusU commented 13 years ago

I updated my gstreamer with the natty packages but the issue is still occurring.

$ gst-launch-0.10 --version

gst-launch-0.10 version 0.10.32 GStreamer 0.10.32

danielgtaylor commented 13 years ago

Have you confirmed this issue with Ubuntu 11.04?

AkeemMcLennon commented 13 years ago

I do not own an iPad, but I noticed this issue on OS X machines as well. I should be able to test it out within the next few days.