[FFmpeg-devel] [PATCH] AVCHD/H.264 parser: determination of frame type, question about timestamps
Thu Jan 29 20:39:07 CET 2009
On Thu, Jan 29, 2009 at 11:33 AM, Baptiste Coudurier
<baptiste.coudurier at gmail.com> wrote:
> David DeHaven wrote:
>> Any interest in clips from the Hauppauge HD-PVR? I can get samples
>> captured in 480i, 480p, 720p and 1080i. I think I have a 576i clip
>> somewhere from a PAL source, if I dig out my signal generator or maybe
>> the VCR with PAL/SECAM output I could produce another one if needed.
>> The HD-PVR is based on a chip from Ambarella that's also used in AVCHD
>> cameras. The firmware is different (obviously) but I think the streams
>> are similar to what the cameras spit out, MPEG TS with H.264 video and
>> either AAC or AC3 audio. AC3 is either 2 channel stereo or whatever
>> comes in via S/PDIF.
> 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...
Probably because H.264 MBAFF is a nightmare of epic proportions. To
borrow a phrase from Loren, "anyone who ever looked at MBAFF has run
screaming into the night. It's like a tome of Eldritch lore."
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