eatpills
8th February 2008, 07:52
I have some source material from a DVD recorder that is supposedly (more about this later) 720x480 MPEG2 interlaced. I get this using my usual method of creating an image of my DVD+RW, ripping to a single VOB using DVD Decrypter and editing out parts with VideoReDo.
I've accumulated a fair number of these files and I want to encode them to x264 to save space. I spent the last two days encoding using various options with MeGUI. However, I'm not quite happy with the result. Here are some of my issues:
a) Profile: So far, I've tried CE-Highprofile and HQ-Fast, which have failed to deliver the results I want. Which profile delivers quality within a reasonable time period?
b) Bitrate: I'm thinking that this is probably the source of my problem with quality and such. I've been using the default 1000kbps in the profiles I've tried. What are recommendations for 55min MPEG2 at ~4.5Mbps? My sources are about 1.8GB and I want to get it down to at least 60% of the original size.
c) Interlacing: At first, I was deinterlacing with AVISynth's TDeint(). Then I realized that x264 could also output interlaced video. I added the --interlaced switch to the additional command line options of the profile. Is this right? And is it a good idea to leave my material interlaced?
c) Resolution: I'm having some major problems here. My source is apparently 720x480, but something tells me that it might be 640x480 (despite many things telling me that it's the former). Now x264 gives me real 720x480 output and it looks weird (correct term is wrong aspect ratio, I think). Furthermore, when I take a snapshot of my source with VLC, I get an image that's 640x480...so it's probably this. How would I go about forcing a resolution of 640x480 in AVISynth or something?
Thanks for your help, and I hope to be doing quality encodes soon :)
I've accumulated a fair number of these files and I want to encode them to x264 to save space. I spent the last two days encoding using various options with MeGUI. However, I'm not quite happy with the result. Here are some of my issues:
a) Profile: So far, I've tried CE-Highprofile and HQ-Fast, which have failed to deliver the results I want. Which profile delivers quality within a reasonable time period?
b) Bitrate: I'm thinking that this is probably the source of my problem with quality and such. I've been using the default 1000kbps in the profiles I've tried. What are recommendations for 55min MPEG2 at ~4.5Mbps? My sources are about 1.8GB and I want to get it down to at least 60% of the original size.
c) Interlacing: At first, I was deinterlacing with AVISynth's TDeint(). Then I realized that x264 could also output interlaced video. I added the --interlaced switch to the additional command line options of the profile. Is this right? And is it a good idea to leave my material interlaced?
c) Resolution: I'm having some major problems here. My source is apparently 720x480, but something tells me that it might be 640x480 (despite many things telling me that it's the former). Now x264 gives me real 720x480 output and it looks weird (correct term is wrong aspect ratio, I think). Furthermore, when I take a snapshot of my source with VLC, I get an image that's 640x480...so it's probably this. How would I go about forcing a resolution of 640x480 in AVISynth or something?
Thanks for your help, and I hope to be doing quality encodes soon :)