[FFmpeg-devel] [PATCH] AVCHD/H.264 parser: determination of frame type, question about timestamps

Måns Rullgård mans
Thu Jan 29 22:22:14 CET 2009

Ivan Schreter wrote:
> Baptiste Coudurier wrote:
>> Explain me, which these people did one step away from progressive, by
>> encoding each field separately in H.264, while everybody understood that
>> using frame coding in MPEG-2 was really better ?
>> I can't believe it...
> I suppose you wanted to reply to my comment...
> I don't know why those people use field coding for interlaced H.264 in
> HD-camcorders, but the fact is, they do. I've checked with Panasonic,
> Canon and Sony camcorders. They all seem to produce field-coded
> interlaced movies (i.e., each frame is coded as two separate field
> pictures).
> My Panasonic camcorder can also record in 25p cinema mode. In this case,
> it produces frame-coded progressive movies (i.e., it uses frame picture
> in H.264 instead of two field pictures per frame).

They probably don't have enough processing power for 1080p50/60, and are
too lazy to implement interlaced frame coding.

M?ns Rullg?rd
mans at mansr.com

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