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Originally Posted by hoochthefireman  I am backing up my Movies on to an external drive and I am useing a PS3 to play them. I am putting the full copy on the hard drive with no compressioon. When I play it back it looks grainy. Kinda like an old picture i guess you would say. Now when I put them on to a disk they look fine. Have I done something wrong in the encodeing? Thanks for your help.
Ryan |
The grainy picture is actually in the DVD encoding. There are 2 reasons you wouldn't see it when the same movie is written to a new DVD. If the new DVD is the smaller DVD5 (e.g. standard DVDR, not a dual layer) then the video is being re-compressed. If you are using
DVD Fab to create the DVD5 then it likely has a despeckle filter to makes the compressed image look better.
The other reason is that it seems the PS3 uses a different upscaling routine for DVDs than it does for direct video files. I've taken the same exact VOB content and watched it streamed, burned as a DVD, and burned as a file on a DVD-ROM. Streamed and burned as a file both had the speckles and jitters while the burned DVD played flawlessly. You can even copy the content to the PS3 hard drive with the same issues. Keep in mind that you are playing MPEG2 content that is basically 480p 24fps at 1080p 60fps.
As for your external hard drive, the method you can use depends on how the drive is formatted. If the drive is formatted NTFS then signals advice is correct (provided you own DVD Fab V5 with Mobile option). However, if your drive is formatted FAT32 then there is a 4GB file limit. If you can plug the external hard drive directly into the PS3 then it is FAT32 formatted. You can also right click on the drive letter in Windows and select properties to see the formatting. You can handle the 4GB limit in DVD Fab Mobile by selecting a 4GB split under vob passthrough. This will limit file changes to one per movie.
What you may not have noticed yet is the playback jitter or flicker for NTSC Film encoded VOB files (those from most DVDs). It is most noticeable on the top and bottom edges of the frame and on any straight horizontal lines in the frame (like opening credits). I have been able to eliminate this problem in many movies and wrote a guide about it:
http://www.synology.com/enu/forum/vi...hp?f=50&t=7965
However, my guide will sometimes make the audio out-of-sync and I've been unable to correct that so far.
As far as I can tell the flicker problem is caused by the 2:3 pulldown interlace frame information present in most DVDs. The actual film is usually shot at 24fps (rounded) and being film it is naturally progressive content (each frame is an entire picture). Standard tube TVs need an output that is 30fps (rounded) and interlaced. Extra frame information is added to the VOB stream so that older DVD players can output 30fps interlaced. Unfortunately, the extra frame information seems to be confusing the PS3 when outputting to 1080p causing the jumpy edges.
If anyone has a way to convert the progressive MPEG2 stream found on most DVDs to a pure NTSC Film spec and strip out the extra frame information I hope they will speak up.