Maartin, Your interest in dvgrab/ffmpeg as compared to mpeg2enc is similar to mine. Comparing preprocessing tools (lavrec/dvgrab) in combination with postprocessing tools (ffmpeg/mpeg2enc) may be too difficult to do as now it seems all tools ultimately go thru a generic YUV phase and no input tool is tied to the ouput. So possibly it would be reasonable to compare input methods (lavrec/lvs) vs (dvgrab/kino) with each other OR compare encoders (TMPGENC/ffmpeg/mpeg2enc).
Here are issues when comparing input methods: ease of setup size of immediate output files cpu usage during aquisition stability/range of hardware And some encoding issues : Encoding time for given hardware Size of resultant video/audio files Quality (subjective) of resultant video/audio. Control of the encoding Which leads to what you are doing: PVR (real time playback with delays and commercial detection) Frame accurate editing and video effects Burning streams DVD or VCD Transcoding One day someone may perform a comprehensive comparison. It's difficult enough to compare a single aspect much less a combination. ----- Original Message ----- From: "Maarten de Boer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 08, 2003 4:09 AM Subject: Re: [Mjpeg-users] VCD 2500vbr better quality than SVCD > > I think for SVCD if the -K kvcd option and -q 8 (or 9) were used > > the results would make a good SVCD video. If the source has > > noise then adding yuvdenoise with moderate settings (-l 1 or -l 2) > > will work wonders. > > Hi, > > I am still trying different settings (but the process is rather slow, > and I have to do it at home, where I can dedicate only limited time to > it), but indeed -K kvcd improved a lot. I left out the -N option because > I don't think my source material is that noisy, and I am not sure if it > is really necesary to use the -l 1 for yuvdenoise. I have not tried to > the new SVCD on my DVD player yet, so I can not say if it looks better > than the VCD, but my impression (from watching with mplayer) is that it > isn't... > > I notice some strange artefacts, that I noticed also in the VCD, when playing > with mplayer, but not when playing on the DVD+TV): blue "lightning": small > blue lines that appear and disappear. A bit like when you put a aluminium > cooted crisps bag in the microwave ;-) ... Any idea? > > Another question: Dan Dennedy mailed a script to the kino-dev mailing > list to convert dvgrab output to mpeg2 (for DVD) using ffmpeg. Now, this > might be a good moment to ask something I have on my mind for quite a > while. What would be the main advantages/disadvantages between ffmpeg, > mjpegtools (and mencoder)? (for this particular purpose, converting DV > to mpeg2 for DVD/SVCD/VCD) ? > > Maarten > > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > Mjpeg-users mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/mjpeg-users > ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. SourceForge.net hosts over 70,000 Open Source Projects. See the people who have HELPED US provide better services: Click here: http://sourceforge.net/supporters.php _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
