Matt, I started creating a doc on QT compatibility by exporting video from Cinelerra using different compression schemes with the QT container format: http://content.serveftp.net/video/qtcompatibility.ods.html http://content.serveftp.net/video/qtcompatibility.ods (Open Office Calc)
For now, I've found MPEG4/JPEG photo compression schemes most compatible among the major media players. Note that I've used twos complement as my audio stream. You'll probably get even better results from MP3/4, but I just haven't had time to test these. hope this helps, scott On Sat, 2006-10-07 at 22:43 -0500, Matt Pfingsten wrote: > A while back I was having issues importing QuickTime DV files that had > been captured on a Mac with Final Cut Pro. I learned that, apparently, > in spite of the fact that Cinelerra both claimed they were compressed > with the DV codec and were quicktime files, someohow the FCP quicktime > was different. Cinelerra, for whatever reason, wouldn't read all of > the frames. Playback appeared choppy, but even when advancing a frame > at a time only evey fourth of fith frame would actually display. I > figured that Apple, being the creators of Quicktime, had done > something different to their Quicktimes that the Linux efforts hadn't > caught up to just yet. MPlayer/MEncoder could read it fine, so I > managed to export it to an AVI DV, although Cinelerra proved unable to > play anything pass the first GB of data. > > Well, in the last few days I've learned more. It's not just FCP that > creates "different" DV compressed Quicktimes. There appear to be many > different DV Quicktimes, each claiming to be the same thing but > obviously different in some way. Here is a comparison between three > different clips: > > 1) A file called fhmp_footage.mov. This first file is some footage > captured in Final Cut Pro. > -In Cinelerra, playback is choppy and only every fourth or fifth frame > is displayed. > -In MPlayer it plays fine. "mplayer -identify fhmp_footage.mov" yields > this: (relevant portions only): ID_VIDEO_FORMAT=dvc, and later > ID_VIDEO_CODEC=qdv > -FFMpeg cannot play it, complaining "could not open codecs." > > 2) A file called 16A-1.mov. This is a clip I shot two weeks ago and > captured using dvgrab. > -Cinelerra plays it back fine. No issues. > -In MPlayer it plays fine. "mplayer -identify 16A-1.mov" yields this: > (relevant portions only): ID_VIDEO_FORMAT=dvc, and later > ID_VIDEO_CODEC=qdv > -FFMpeg can play it. "ffmpeg -i 16A-1.mov" identifies the video as > dvvideo. FFPlay plays it fine. > > 3) A file called titles_end.mov. This clip was created in Cinelerra > from a bunch of PNG files. It is a one minute title sequence. > -Cinelerra can play it back fine. No issues. > -MPlayer/MEncoder have no problems. "mplayer -identify titles_end.mov" > yields this: (relevant portions only): ID_VIDEO_FORMAT=dvc, and later > ID_VIDEO_CODEC=qdv > -FFMpeg can't play it, complaining "could not open codecs." > > Cinelerra identifies all three as DV Codec compressed Quicktimes. It > should also be noted that Kino 0.9.1 can't open any of these files > without complaining that the file isn't a DV file and wanting to > import it via MEncoder. Kino 0.7.6 can open all of these files, > although it takes about five minutes to open the first file > (fhmp_footage.mov) probably because it is 13 GB. > > At the present time this is preventing me from burning my dailies or > cuts to DVD which I could like to do before Tuesday. The biggest issue > is why Cinelerra is exporting Quicktimes that can't be read by > others. > > I remember reading something in the archives about dvc, dvsd and > multiple headers or something being written into one file. Of course, > two hours of searching has failed to produce this message now that I > needed it. > > Anyone have any idea what is going on? What's different about these > files? Why are they called the same thing? How can I fix them. Most > important of all, how can I export a DV Quicktime out of Cinelerra > that will work in something besides Cinelerra and MPlayer? > > -- > Matt Pfingsten > www.GotWookiee.com _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
