constant frame rate impossible?
Posted: 20 Jun 2012 09:35
Hi,
does anyone know how to force a constant frame rate on VLC (2.0.1)? I am trying to transcode raw avi files with VLC, wich works fine basically, but the problem is that I cannot seem to produce files with a constant frame rate of 25 fps. The original files DO have 25 fps. The transcoded ones have rates of 24.996, 25.523 etc., but never precisely 25, and mediainfo displays "framer rate mode: variable". This is a problem later on when I want to edit the files: audio goes out of sync when i cut the files. I have tried the fps parameter in any possible combination. Below is the line I use for transcoding. I have been fighting with this problem for months (using different versions of VLC, also nightly builds). Please help!
start "C:\VideoLAN\VLC\vlc.exe" -vvv inputfile.avi --sout=#transcode{vcodec=mp4v,vb=5600,fps=25,scale=1,acodec=mp4a,ab=192,samplerate=48000}:standard{access=file,mux=mp4,dst="Y:\Output\outputfile.mp4"} vlc://quit
PS: OS is windows 7 64 bit
does anyone know how to force a constant frame rate on VLC (2.0.1)? I am trying to transcode raw avi files with VLC, wich works fine basically, but the problem is that I cannot seem to produce files with a constant frame rate of 25 fps. The original files DO have 25 fps. The transcoded ones have rates of 24.996, 25.523 etc., but never precisely 25, and mediainfo displays "framer rate mode: variable". This is a problem later on when I want to edit the files: audio goes out of sync when i cut the files. I have tried the fps parameter in any possible combination. Below is the line I use for transcoding. I have been fighting with this problem for months (using different versions of VLC, also nightly builds). Please help!
start "C:\VideoLAN\VLC\vlc.exe" -vvv inputfile.avi --sout=#transcode{vcodec=mp4v,vb=5600,fps=25,scale=1,acodec=mp4a,ab=192,samplerate=48000}:standard{access=file,mux=mp4,dst="Y:\Output\outputfile.mp4"} vlc://quit
PS: OS is windows 7 64 bit