On Wed, Dec 23, 2009 at 12:47 PM, Damien Hull <dhull at digital-overload.net> wrote: > GTK-recordmydesktop works fine. I can play the video. Just not with kdenlive. > The melt player won't play the video. It seems kdenlive needs work. Unless > there's something I'm missing. So far nobody is giving me any useful > information. >
It is well known editing Ogg Theora is problematic. This is due to known problems with seeking on Ogg Theora in the FFmpeg libs. You can verify this by playing it with ffplay and clicking around on the video window to make it seek. More effort is being put into improving the MLT FFmpeg plugin for all formats instead of creating a new plugin to remedy Ogg Theora, e.g. using gstreamer. I suggest to try 2 things to work with an Ogg Theora clip. In the Project Tree, right-click the clip to get the Transcode menu. There should be a "Fix Ogg Theora," which remuxes the Ogg in a way that ffmpeg likes, but can also introduce an a/v sync problem. The second also under Transcode, is to choose Lossless Matroska, which will give you a huge file because it is lossless. > Here's a sample video that I rendered with kdenlive using the youtube > settings. I don't know why it looks this way. > http://www.youtube.com/watch?v=N3u8K1K9y7w > > Here's an example without kdenlive. I recorded the video with > GTK-recordmydesktop and just uploaded the ogv file to youtube. > http://www.youtube.com/watch?v=NqdiPDD0IOQ > > QUESTIONS > 1. Why is the kdenlive video so small? Most of it is a black border. Not sure without more details. I would expect black borders on only 2 sides if the project setting does not match the source. > 2. Is there something wrong with melt? It won't play video of any kind. Hehe, yes, that would be a major problem your build of MLT. I seem to be hearing an echo. Did you install libsdl1.2debian-pulseaudio or -all? (Or, preferably, does the package now require that?) > 3. I've seen screen casts that were made with kdenlive. Why are there no > instructions for this? There is a video tutorial for creating a custom project setting, which is really all that is special for screencasts. The problem with Ogg Theora is documented in forums and bug tracker. > 4. Is Kdenlive 0.7.6 for Ubuntu working? I only ask cause it seems to crash a > lot and I can't get any of it to work right. > good, legitimate question. > I think kdenlive has a lot of features and looks like it could be a great > video editing tool. However, it doesn't do anyone any good if it doesn't work. > Works rather well for me, and I know for some others as well. I wish the distro packages worked better. I wish it worked with PulseAudio immediately upon install (by installing the SDL pulseaudio backend). I wish recordmydesktop would record to something other than Ogg Theora. I wish FFmpeg libavformat had better support for Ogg Theora and AVCHD. I wish someone would contribute a gstreamer plugin for MLT. I wish someone would contribute a gmerlin-avdecoder plugin for MLT. Oh well, can't speak for the others, but I still have the rest of my life to work on this wish list at my own pace. -- +-DRD-+
