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fps 50 output impossible with Mediacoder GUI
Posted: Fri Mar 25, 2011 4:42 am
by pheno
I'm trying to transcode 1920x1080:50i video to xvid format with fps50 for smooth playback. It seems that mediacoder can't do this via the GUI.
I can do it from commandline with:
Code: Select all
mencoder.exe f:\mplayer\00030.mts -demuxer lavf -sws 10 -fps 100 -ofps 50 -vf yadif=1,mcdeint,softskip,harddup,scale=722:406 -oac mp3lame -o 00030.avi -ovc xvid -xvidencopts bitrate=4000:threads=0
and the output of that is here:
http://phenoboy.kapsi.fi/00030-xvid-fps50.avi
mencoder version:
C:\Program Files\MediaCoder\codecs>mencoder.exe
MEncoder Sherpya-MT-SVN-r32848-4.5.0 (C) 2000-2011 MPlayer Team
No file given
original file is here:
http://phenoboy.kapsi.fi/00030.MTS
Re: fps 50 output impossible with Mediacoder GUI
Posted: Fri Mar 25, 2011 7:32 pm
by stanley
Try manually enter 50 in frame rate option.
Re: fps 50 output impossible with Mediacoder GUI
Posted: Sat Mar 26, 2011 3:10 am
by pheno
Nope it did not seem to help. Always 25fps
Re: fps 50 output impossible with Mediacoder GUI
Posted: Sat Mar 26, 2011 7:28 am
by pheno
I don't want to be immature but if developers of Mediacoder GUI think it's an awesome tool then please tell me how can I achieve what I want. Source file is present. Sort of a challenge for developers, right ?
Re: fps 50 output impossible with Mediacoder GUI
Posted: Sat Mar 26, 2011 11:17 am
by meRobs
Just a minor comment: interlaced 25 fps (frames per sec) displays each frame in two fields, each having only half the lines (video data).
Hence, it is not strictly 50 fps, although, it is 50 fields per sec!
Also, MediaCoder will usually convert interlaced video (25 fps = 50 fields per sec) into progressive at 25 fps, especially if Effects (tab at right of Picture) is set to Enable De-Interlace.
Re: fps 50 output impossible with Mediacoder GUI
Posted: Sat Mar 26, 2011 8:23 pm
by pheno
I have Phenom II X4 965 and GTX 260 so no problem there.
Monitor is standard LCD so yes it is progressive.
Playback of the original file is very smooth in VLC with deinterlace enabled (for example with "linear" setting). Because it is 50fps. Also windows media player automatically turns on deinterlacing. Well, my eyes can easily see difference between 50fps and 25fps. And the original interlaced is much smoother (IMHO) than 25fps progressive.
I tried to transcode original file with Mediacoder and for some reason length of the video doubled and it plays slower that it should. This could be a problem in mencoder itself.
If I could resize original 1920x1080 to for example 720x400 interlaced I would be happy. It seems that this is also impossible at the moment.