2019-01-15 3:13 GMT+01:00, Ulf Zibis <ulf.zi...@gmx.de>: > Am 13.01.19 um 00:25 schrieb Carl Eugen Hoyos: >>>>> tbn >>>> This is the container timebase, 90k for mpeg streams. >>> For what stands 90k? For 90,000 milli seconds? >> It stands for a timebase of 1/90000 > > Is it 1/90000 second?
I suspect timebase is a fraction and has no unit but I may be wrong. >> which is the timebase >> for all mpeg streams (and cannot be changed afaik). > Do you mean MPEG-2 with "mpeg"? MPEG program and MPEG transport streams are (also) defined in the MPEG-2 standard (that also defines several other things). > My MPEG-4 stream has > > 12800 tbn Command line and complete, uncut console output missing. [...] >>>> libx264 does not support PAFF encoding. >>> What is PAFF? >> H.264 field-encoding, another method of h.264 interlaced >> encoding exists, MBAFF (which is supported by libx264). > > So if I want to retain the interlacing from the vob file, I should use > MBAFF. What is the ffmpeg option for this? Probably "-flags +ilme+ildct" > Which is the de-interlacing method, libx264 uses by default? x264 is an encoder and knows nothing about de-interlacing, it does not de-interlace. > I'm interested in that, because I imagine, that it would be better > for the quality to retain the interlacing This is correct: If you use progressive encoding for interlaced content, it either costs (a lot of) quality or bitrate. > i.e. then the video player is able to write 50 half-frames per > second to the output display, which provides better quality > than 25 merged progressive frames per second. Only (old!) CRTs can do this, so I assume this has no relevance here. > Does my assumption hold? > But unfortunately I do not know, if my video (DVD-R recorded from a VHS > cassette) originally was telecined from an analogue celluloid film or > was produced directly on video tape (which should be true interlaced). > Any idea, how I can detect this? The "idet" filter can do this. Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".