Conversion - mpg video

[vidblue]

Hello,

I've this mpg video with mpeg-ps codec. I wonder if it's possible to convert it to something better quality video.
Here is the mediainfo output. Thanks

Complete name                            : KSvar.mpg
Format                                   : MPEG-PS
File size                                : 3.43 GiB
Duration                                 : 2 h 2 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 3 992 kb/s

Video
ID                                       : 224 (0xE0)
Format                                   : MPEG Video
Format version                           : Version 2
Format profile                           : Main@High 1440
Format settings, BVOP                    : Yes
Format settings, Matrix                  : Default
Format settings, GOP                     : Variable
Duration                                 : 2 h 2 min
Bit rate mode                            : Variable
Bit rate                                 : 3 752 kb/s
Width                                    : 768 pixels
Height                                   : 576 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 25.000 FPS
Standard                                 : Component
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.339
Time code of first frame                 : 00:00:00:00
Time code source                         : Group of pictures header
GOP, Open/Closed                         : Open
Stream size                              : 3.22 GiB (94%)
Transfer characteristics                 : BT.601
Matrix coefficients                      : BT.601

Audio
ID                                       : 192 (0xC0)
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 2
Duration                                 : 2 h 2 min
Bit rate mode                            : Constant
Bit rate                                 : 160 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Compression mode                         : Lossy
Delay relative to video                  : -10 ms
Stream size                              : 141 MiB (4%)

[hech54]

Converting LESSENS the quality.

[jagabo]

Yes, converting can only make it worse. But filtering it can fix some types of problems. What's wrong with the current video?

[vidblue]

Thanks guys. I'm a newbie to the conversion or encoding stuff. I was wondering if the video could be changed to constant bit rate with x264/mkv format without much penalty on the quality.

[hech54]

Thanks guys. I'm a newbie to the conversion or encoding stuff. I was wondering if the video could be changed to constant bit rate with x264/mkv format without much penalty on the quality.

Just take a short portion of the video via a lossless cut and test it.

[manono]

Making it CBR is idiotic and won't result in higher quality. If the idea is to make it smaller, then reencode it at a lower VBR bitrate. If the idea is to somehow improve the quality with selective filtering, then we'd need a small 10-second sample, one with steady movement and that shows the problem.

[kuka1]

768x576 progressive 3 752 kbps could be transcoded to h264 at 2000 kbps VBR without visual qualty loss. File size becomes around 2 Gbytes

[pandy]

Thanks guys. I'm a newbie to the conversion or encoding stuff. I was wondering if the video could be changed to constant bit rate with x264/mkv format without much penalty on the quality.

CBR is NOT normal for most of the signal sources - CBR is required only in special cases and usually there is no way to make CBR without cheating (usually stuffing must be added to real data).
Is there any special reason that you require CBR video?