[Horscht]

Hello,
I sometimes have issues with weird artifacting on my videos. I made a YouTube video showing the issue in action: https://youtu.be/YpBNFR9YFK0

Does someone know what is causing this issue? What do I need to do/avoid during encoding to prevent this?

[popcornmix]

Post mediainfo of file.
Most likely an unsupported codec like Hi10P H.264 or GMC with warp points in MPEG-4.

[Horscht]

Seems to be GMC warppoints... whatever thatis. ?
[/quote]

Code:

General
Complete name                            : Y:\Videos\TV-Shows\Family Guy\Season 03\S03E04 - One if by Clam_ Two if by Sea.avi
Format                                   : AVI
Format/Info                              : Audio Video Interleave
File size                                : 137 MiB
Duration                                 : 22mn 33s
Overall bit rate                         : 847 Kbps
Writing application                      : VirtualDubMod 1.5.1.1a (build 1639/release)
Writing library                          : VirtualDubMod build 1639/release

Video
ID                                       : 0
Format                                   : MPEG-4 Visual
Format profile                           : Advanced Simple@L3
Format settings, BVOP                    : No
Format settings, QPel                    : No
Format settings, GMC                     : 2 warppoints
Format settings, Matrix                  : Default (H.263)
Codec ID                                 : XVID
Codec ID/Hint                            : XviD
Duration                                 : 22mn 33s
Bit rate                                 : 646 Kbps
Width                                    : 640 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.088
Stream size                              : 104 MiB (76%)
Writing library                          : XviD 0.0.09 (UTC 2003-03-25)

Audio
ID                                       : 1
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 3
Mode                                     : Joint stereo
Mode extension                           : MS Stereo
Codec ID                                 : 55
Codec ID/Hint                            : MP3
Duration                                 : 22mn 33s
Bit rate mode                            : Constant
Bit rate                                 : 192 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 KHz
Compression mode                         : Lossy
Stream size                              : 31.0 MiB (23%)
Alignment                                : Split accross interleaves
Interleave, duration                     : 42 ms (1.00 video frame)
Interleave, preload duration             : 464 ms

[popcornmix]

Seems to be GMC warppoints... whatever thatis. ?

Read this and avoid GMC in the future.

With a nightly build (e.g. Milhouse) or the upcoming Isengard release, this file will play correctly.
(We detect it and switch to software decoder).