Blurry motion using AVS4YOU Video Editor

[CaspianCanuck]

Hi,

I have been using AVS4YOU Video Editor to edit videos made with my Full-HD camcorder (Panasonic HDC-TM700) and save them as Full-HD video files on the hard disk. Scenes with motion or panning appear somewhat fuzzy/blurry in the output (produced) files while in the source files they are perfectly smooth. Frame by frame comparison shows that in the output file each frame appears to be composed of two source file frames, which I guess blurs the motion. I am attaching screen shots of the same moment from the source and output files.

The source MTS file's properties according to MediaInfo:

Overall bit rate mode : Variable
Overall bit rate : 12.7 Mbps
Maximum Overall bit rate : 18.0 Mbps
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=3, N=15
Codec ID : 27
Bit rate mode : Variable
Bit rate : 11.8 Mbps
Maximum bit rate : 16.8 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.189
Stream size : 58.2 MiB (93%)


The fuzziness/blurriness appear no matter what format I save video in: M2TS or MPEG. In both cases I went with the following settings:

Codec: H.264/AVC
Resolution: 1920 x 1980
Framerate: 29.97
Encoding type: Single Pass - Quantizer (set at default 26)

The output file's properties according to MediaInfo:


Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : 27
Duration : 11mn 25s
Bit rate : 7 997 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.129


What immediately jumps at me is that the output file is progressive vs the source file's intelaced. However, using the Deinterlacing effect in AVS4YOU had no effect on blurriness.

The other noticeable difference is that the output file is encoded using format profile Main vs the High in the source file. There doesn't seem to be an option to change the profile in the H.264 settings exposed by AVS4YOU.

Any ideas what's wrong?

[turk690]

What immediately jumps at me is that the output file is progressive vs the source file's intelaced. However, using the Deinterlacing effect in AVS4YOU had no effect on blurriness.

The default output of such camcorders is indeed interlaced. Deinterlacing to create a progressive frame out of two unique fields can take many forms, though: display both fields at the same time, drop one field and repeat each line in succession of the remaining field, drop one field and create interpolated new lines, create a new frame by intelligently interpolating line pairs from the two fields, efficiently create a new frame by sensing the differences between fields and applying different algorithms, etc. AVS4YOU may be deinterlacing but if it's doing it with the 1st method I mentioned then this is just plastering one field over the other therefore showing bluriness in scenes with a lot of motion like that you observed. Can you choose deinterlacing method in AVS4YOU? If done with the 2nd method, bluriness will be gone, but this effectively halves vertical resolution and is wont to produce jagged edges on slanted lines in the video. The other deinterlacing methods will take longer processing times and more computational power but reduce if not remove the bluriness and maintain original vertical resolution.
To combat this, I have always chosen to record in 30p mode where current AVCHD camcorders are concerned, as opposed to 60i default. 30p is web ready and all that; and when it has to be interlaced, you still get your two fields in perfect relationship to one another (because both unique fields happened in the same instant of time, as opposed to sequentially in genuine interlaced acquisition video), all still truly 1080, no blurring (as long as the shutter speed is high, of course).

[poisondeathray]

as turk690 says, you are blend deinterlacing

The other option is to export 1080i60 (ie. same as original) .

If that editing software doesn't allow for better deinterlacing or export options it's time to use other software

Your camera shoots 1080p60 - why aren't you using that mode? (then you don't have to fiddle with interlace/deinterlace or fields)