Here is an article describing what is probably happening in your app, and will hopefully give you some idea what you need to correct: http://web.archive.org/web/20060719025947/http://www.hometheaterhifi.com/volume_8_2/dvd-benchmark-special-report-chroma-bug-4-2001.html
2013/5/6 Carl Lindqvist <[email protected]>: > I suspect your issue is with resampling the 4:2:0 mpeg video to 4:2:2 > feeding the decklink card. > > As 4:2:0 in interlaced is often poorly done or misunderstood, this is > often an issue. And since we are pretty bad at noticing errors in > color, it will only be obvious in very saturated colors. > > How do you handle the conversion now? Make sure you really specify > that you are handling an interlaced source, since 4:2:0 is very > different in interlaced vs progressive. > > 2013/4/28 nuo yang <[email protected]>: >> Hi everyone, >> >> Recently I use ffmpeg sdk to develop my own player, my video source is >> MPEG-2 NTSC video, and I use ffmpeg sdk to decode the video, then use >> BlackMagic DeckLink sdk to receive the video frame and display the video to >> my CRT monitor through a DeckLink PCI card. Everything is okay but a little >> defect, when the video contains some red color objects (like red clothes), >> and if the red color objects moving fast, there are some horizontal lines on >> red color. My video is interlaced, and I tried some methods, including >> change the video field order, but I didn't make it. BTW, if I use ffdshow to >> decode the video, it does not have the issue. >> >> Is there someone has the same issue like me, or can someone give me some >> advice? Many thanks in advance! >> >> >> - Nuo >> >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user >> _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
