Interlace HD footage to Pogressive

[leftspeaker2000]

Hey i recently got given a cheap samsung HD HMX-H300BN video recorder that does 720p and 1080i. I am having trouble converting the footage from 1080i to p as everytime i do so i end up with weird stutters in my encode. I am using Megui and i let it automaticly analyze the footage which it says its iterlaced with varying feild order and decides to use yadif.

This is what media info says about the orignal sorce

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L4.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 12s 40ms
Bit rate mode                            : Variable
Bit rate                                 : 17.2 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 50.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan order                               : Top Field First
Bits/(Pixel*Frame)                       : 0.166
Stream size                              : 24.7 MiB (99%)
Title                                    : HMX-H300
Language                                 : English

Source

http://www.mediafire.com/?7ra02n10091f102

Encode

http://www.mediafire.com/?v8he61d236srbjl

If anyone could give me some help that would be great

[jagabo]

First marketing people started calling 25i video 50i because bigger numbers sound better (the video is stored as 25 frames per second, with each frame containing two fields which are to be viewed separately and sequentially, ie 50 fields per second). Then some hardware manufacturers started labeling 25i videos as 50i because people get upset when they buy a "50i" camera and all the files they shoot say 25i. This incorrect labeling causes many software packages to get confused.

I was able to get AviSynth's DirectShowSource() to read the video properly by specifying fps=25 and ConvertFPS=true:

DirectShowSource("Source.MP4", fps=25, ConvertFPS=true) 
Yadif(mode=1, order=1) # convert 25i to 50p
BilinearResize(1280,720)

That was using Lav Splitter and CoreAVC as the decoder. Attached is an MKV file with the 720p50 video only.