DV is well suited for SD video, and it's compression method is very similar to mjpeg's (intraframe compression using Discrete Cosine Transform) so there's no big difference in picture quality. File size should also be similar, depending on the audio track (DV uses uncompressed PCM audio). To edit HD video, nevertheless, I think DNxHD is preferable since it's less lossy than mjpeg (with the drawback of a bigger file size). It has been designed specifically for video editing and is well supported by cinelerra (and other free tools).
----- Mail Original ----- De: "Haldun ALTAN" <al...@wanadoo.fr> À: cinelerra@skolelinux.no Envoyé: Samedi 13 Novembre 2010 14h56:34 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne Objet: Re: [CinCV] help choosing a video camera compatible with gnu/linux I always used .dv. What's the advantage of mjpeg ? Please ... Le 13/11/2010 14:36, Eli Billauer a écrit : > > The truth is that I don't understand why people are so uptight about > having their original footage going directly into Cinelerra. I mean, > it's nice that Cinelerra supports several video formats, but somehow > I'm only really calm when I feed it with MJPEGs. Meaning, take the > original video, convert it to MJPEG using ffmpeg or mencoder and then > use that file with Cinelerra. > > One of the huge problems with all video cameras is that even though > they claim supporting some video format, they are very likely to > produce a non compliant video stream as a result of some software > and/or hardware bugs. Or just because nobody cares. Since players are > keen on playing the video smoothly despite those errors in the stream, > these problems go away unnoticed, or maybe with some minor artifacts, > which most of us don't care about when watching the video for the > interest of its content. > > So what happens is that you get these artifacts in your rendered video > all of the sudden. And then what? > > Solution: Convert to MJPEG first, and check the converted video. Since > MJPEG is such a simple format, it's very unlikely that something a > video player showed correctly will break in Cinelerra. If it's OK, go > ahead editing it. If not, look for another video transcoder. It's that > simple. It's the long way to getting the work done quickly. > > So my suggesting is: Just buy the camera that fits your needs. > > Eli > _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
