[FFmpeg-user] Meaning of ffprobe output

Ulf Zibis Ulf.Zibis at gmx.de
Tue Jan 29 03:31:01 EET 2019

Am 29.01.19 um 01:32 schrieb Moritz Barsnick:
> On Mon, Jan 28, 2019 at 22:52:38 +0100, Ulf Zibis wrote:
>>> LEDs and LCDs would give you headaches if they displayed alternating lines, as the "afterglow" effect of CRTs, retaining the line's content, is not present.
>> If each 2nd line would be empty (black) you may be right, but if the
>> intermediate lines are filled with the content of the before frame, you
>> have the "afterglow" effect perfectly simulated also on LCD and LED.
> Buffering the content of the "before frame" to leave it displayed while
> the current frame provides every other line is certainly something I
> would call classic "deinterlacing": You are describing a display which
> first takes both fields of a frame and combines them to a progressive
> one.

Yes, the software video player could transform the 25 fps interlaced
stream to a 50 fps progressive stream as I described to feed the
display. Then there would be no visual quality loss as known from
deinterlacing algorithms like "weave", comparable to the quality of a
interlaced CRT.


More information about the ffmpeg-user mailing list