Version: 2.0.x (using KDE 4.6.1) OS: Linux I'm playing a 3gp video file in dragonplayer - but the sound is only horrible noise. The sound plays fine in VLC. I'm using the Xine phonon backend - which must be default in Kubuntu. pascal@pascal-t410s:~$ file VIDEO0016.3gp VIDEO0016.3gp: ISO Media, MPEG v4 system, 3GPP Reproducible: Always Steps to Reproduce: wget http://dhermilly.dk/pascal/VIDEO0001.3gp dragon VIDEO0001.3gp Actual Results: horrible noise Expected Results: good sound or a message that the audio could not be played. OS: Linux (x86_64) release 2.6.35-27-generic Compiler: cc
The audio encoding is actually pretty much broken. So there is data that gets decoded and there is audio that comes out, but it does not actually sound like anything. VLC, featuring a better bogus-encoding-recovery technology does slightly better, but still mostly garbage. Nothing we can do about semi-broken files unfortunately.
OK. All my phone videos are like this in the audio(htc desire)... anyway if we cannot play the sound like in VLC then I think the best would be to turn off the sound entirely because it is quite shocking that unexpected loud noise are charging out through the speakers. Can we do that?
another sound test video: http://dhermilly.dk/pascal/VIDEO0052.3gp
I don't understand why this ticket is resolved INVALID. vlc has no issue playing 3gp files. The file linked above works fine in vlc and even in the vlc plugin for firefox. Clearly there is something with the backend's decoding of perfectly well-formed data.
(In reply to comment #4) > I don't understand why this ticket is resolved INVALID. vlc has no issue > playing 3gp files. The file linked above works fine in vlc and even in the > vlc plugin for firefox. Clearly there is something with the backend's > decoding of perfectly well-formed data. Does not on master. The encoding is still defunct, as apparently the time stamping of the audio samples is way off.
When switching the Phonon backend to VLC through systemsettings->multimedia ->phonon ->backend (first install package: phonon-vlc) Dragon plays the file without any issues. So the problem is not in Dragon. I suppose it's in Gstreamer which is used before. Right?
Not it is still with the file. But as I said VLC features better compensation features. The underlying issue still stands. For instance in my VLC git installation it is once again semi-broken (i.e. it is compensating worse for the broken encoding)
I am not sure I understand. I have never seen dragonplayer ever properly play a 3gp file. The audio is always noise. 3gp files are what is produced by mobile phones - mine from Android. Is the claim that somehow all of these files are out of the 3gp spec? I can post some others if that helps.