Hi Carl Eugen, Am 19.01.19 um 14:02 schrieb Carl Eugen Hoyos: >> $ ffmpeg -i CYD_copy.vob -vf idet -f null - >> ffmpeg version 4.1-static https://johnvansickle.com/ffmpeg/ Copyright > Not supported here! > >> (c) 2000-2018 the FFmpeg developers >> built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 > Not ok! This recommendation comes from here: https://trac.ffmpeg.org/ticket/7623#comment:5 So I used the release version 4.1 from here: https://johnvansickle.com/ffmpeg/ in the assumption, that it is more stable as the git build.
>> [Parsed_idet_0 @ 0x6e71900] Repeated Fields: Neither:114683 Top: 1 >> Bottom: 0 >> [Parsed_idet_0 @ 0x6e71900] Single frame detection: TFF: 18738 BFF: >> 12770 Progressive: 42496 Undetermined: 40680 >> [Parsed_idet_0 @ 0x6e71900] Multi frame detection: TFF: 36759 BFF: 19705 >> Progressive: 58193 Undetermined: 27 > This is not conclusive, possibly mixed progressive - interlaced or > interlaced with many scenes without movement. > Visual inspection should clarify. Does that mean, that my vob stream is partly interlaced and partly progressive? I guess, TFF means top first frame and BFF bottom first frame, right? This is weird, as the stream comes from a DVD which was recorded from a VHS cassette with a hardware DVD recorder. Also I do not understand, that after the transcoding to mp4 the numbers are different. I interpret this, that the transcoding process does some deinterlacing, but you say, the encoder does not. The vob with 114684 frames at 25 fps results in 76:27.36 length, but the resulting mp4 with 114502 frames is 76:20.08. How can I understand all this? -Ulf _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
