Encode mpeg with lossless setting

[errantkkn]

Hi all. I have some trouble need help.
I encoded a .VOB file which has below mediainfo:

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Duration : 44mn 16s
Bit rate mode : Variable
Bit rate : 5 208 Kbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.503
Time code of first frame : 00:01:49:00
Time code source : Group of pictures header
Stream size : 1.61 GiB (91%)

I encoded by x264 with the setting:

x264 1.vob --input-res 720x480 --fps 3000/1001 --crf 0 --tff --output 1.mkv

The output is 7GB. And the result in MPC is not smooth. I don't know what was wrong.
Thank you.

[poisondeathray]

--fps 3000/1001


3 FPS won't be very smooth

It probably should be 30000/1001

[errantkkn]

3 FPS won't be very smooth

It probably should be 30000/1001

Thank poisondeathray, that's my wrong typing, I've just reencoded again, the output is now smooth, but the file size is still big. I guess the h264 output should be smaller than mpeg source.

[Guest]

I'm not an expert but I don't see how crf 0 could be smaller than compressed MPEG2 from a DVD.

[nevcairiel]

Thank poisondeathray, that's my wrong typing, I've just reencoded again, the output is now smooth, but the file size is still big. I guess the h264 output should be smaller than mpeg source.

crf 0 is a lossless encoding, it'll use lots and lots of space.
If you want to save space, use a higher crf value, something around above 16 at least, if not even more.

[poisondeathray]

crf 0 is lossless compared to the uncompressed source (MPEG2 => uncompressed YUV), not the original compressed source (MPEG2). So it will always be larger than the original compressed source by many times.

Leave it as is

[errantkkn]

I see. Thank you all :thanks: