ipad transcoding of flv has audio pops

[bherrmann7]

Fantastic work. When transcoding an flv (tried with multiple flv files from youtube) files with 0.9.5, playback on the computer and on the ipad has noticeable audio pops/noise about once a second. Makes an otherwise delightful experience disappointing.

[danielgtaylor]

Hmm, this is a problem with the underlying multimedia framework: GStreamer. Can you provide a sample where this happens and the version of GStreamer you have installed?

[bherrmann7]

I'm using standard Ubuntu 10.04.1 LTS The flv is http://jadn.com/p.flv The gstreamer versions are.... $ dpkg-query -l|grep -i gstream ii bluez-gstreamer 4.60-0ubuntu8 Bluetooth GStreamer support ii gnome-codec-install 0.4.2ubuntu2 GStreamer codec installer ii gstreamer0.10-alsa 0.10.28-1 GStreamer plugin for ALSA ii gstreamer0.10-ffmpeg 0.10.10-1 FFmpeg plugin for GStreamer ii gstreamer0.10-fluendo-mp3 0.10.12.debian-2 Fluendo mp3 decoder GStreamer plugin ii gstreamer0.10-gnonlin 0.10.15-1 non-linear editing module for GStreamer ii gstreamer0.10-nice 0.0.10-2build1 ICE library (GStreamer plugin) ii gstreamer0.10-plugins-bad 0.10.18-1ubuntu1 GStreamer plugins from the "bad" set ii gstreamer0.10-plugins-bad-multiverse 0.10.18-0ubuntu1 GStreamer plugins from the "bad" set (Multiv ii gstreamer0.10-plugins-base 0.10.28-1 GStreamer plugins from the "base" set ii gstreamer0.10-plugins-base-apps 0.10.28-1 GStreamer helper programs from the "base" se ii gstreamer0.10-plugins-good 0.10.21-1ubuntu3 GStreamer plugins from the "good" set ii gstreamer0.10-plugins-ugly 0.10.14-1 GStreamer plugins from the "ugly" set ii gstreamer0.10-plugins-ugly-multiverse 0.10.14-0ubuntu2 GStreamer plugins from the "ugly" set (Multi ii gstreamer0.10-pulseaudio 0.10.21-1ubuntu3 GStreamer plugin for PulseAudio ii gstreamer0.10-tools 0.10.28-1 Tools for use with GStreamer ii gstreamer0.10-x 0.10.28-1 GStreamer plugins for X11 and Pango ii libgstreamer-plugins-base0.10-0 0.10.28-1 GStreamer libraries from the "base" set ii libgstreamer0.10-0 0.10.28-1 Core GStreamer libraries and elements ii pitivi 0.13.4-0ubuntu3 non-linear audio/video editor using GStreame

[danielgtaylor]

Thanks for the detailed info and test file. I am able to confirm the issue and am working on a fix or workaround.

This bug also seems to have been reported here: https://bugs.launchpad.net/gstreamer/+bug/379230

[danielgtaylor]

Nobody seems to know why this is happening, so I've reported an upstream bug here: https://bugzilla.gnome.org/show_bug.cgi?id=652765

[michaelkanis]

I can confirm this problem for videos encoded to other presets as well (tested with "DivX Home Theater" and "G1/Dream"). This only happens with .flv files.

The same videos encoded with Transmageddon on the same machine do NOT have this problem, so I doubt it is a pure GStreamer issue.