[Ffmpeg-devel] MPEG 2 Quality Issues

[Baptiste Coudurier]

Hi

herve.flores wrote:
>>> [...]
>>>
>>
>> Is -top really needed here?

Not at all.

> most of time, contents of DV is interlaced (and most of time DV is
> bottom-field-first)
> if you don't write the field order, ffmpeg will produce a progressive
> output (and you'll see beautifull "comb's effect" during reading on TV ;-))

Wrong. Using either ildct, ilme or alt will produce interlaced content
if codec supports it (mpeg2, mpeg4)

without specify -top, it will be default to -1 and therefore ffmpeg will
keep previous field order.

[...]

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