Keith ,
>Allison,
>
>On Wed, 9 May 2007, hdzhne wrote:
>
>> Is "info->display_fbuf->buf" one field or one frame data (my mpeg2
>> source is interlaced)?
>
>I think it's always a frame. (Not 100% sure in the case of field pictures,
>but nobody seems to use those. I think it's still a frame even when field
>pictures are used, in any event.)
If buf[] is always a frame, we need not do any de-interlace.
>
>> If I want to do de-interlace before display , may I process
>> info->display_fbuf->buf directly?
>
>Sure. Keep in mind that buf[] is an array of three framebuffers -- Y, Cb,
>and Cr -- and those will be different sizes. E.g. Y could be 1280x720 and
>Cb and Cr will be 640x360.
I just display buf[] (convert YUV to RGB) on PC displayer, and can see sawtooth
clear. so I think I need do de-interlace.
So, I am still not sure whether de-interlace should be done about
diplay_fbuf->buf[] or not.
>
>Cheers,
>Keith
>
>> Best,
>>
>> allison
>>
>>
>>
>> ======= 2007-05-08 13:09:18 ：=======
>>
>>> Allison,
>>>
>>> I don't understand exactly what you mean by "SD DV mpeg2 data". DV (aka,
>>> MiniDV) is a different format that does not use MPEG-2.
>>>
>>> Assuming you're just referring to interlaced content, there is no perfect
>>> way to display interlaced material on a progressive display like a
>>> computer monitor.
>>>
>>> Some deinterlacing techniques include "bobbing" (meaning doubling each
>>> line in a field) and "weaving" (meaning displaying each frame as a unit,
>>> with separate fields woven together).
>>>
>>> libmpeg2 does not implement any deinterlacing techniques. It _only_
>>> performs the MPEG-2 decoding process. The display process is up to the
>>> application that harnesses libmpeg2.
>>>
>>> Some of the applications that can use libmpeg2, and do implement various
>>> deinterlacing methods, include mplayer, xine, and vlc. If you want
>>> good-looking results, you should either implement deinterlacing or use one
>>> of those applications. libmpeg2 does not do this.
>>>
>>> Best regards,
>>> Keith
>>>
>>> On Tue, 8 May 2007, hdzhne wrote:
>>>
>>>> hi,
>>>>
>>>> When I use mpeg2lib to decoder SD DV data, I can see sawtooth clear
>>>> when there is quick moving in picture.
>>>>
>>>> I think it because just deinterlacing is too slow or meet some wrong. PC
>>>> I used is high performance PC, and can decoder SD DV mpeg2 data about
>>>> more than 30fps.
>>>>
>>>>
>>>>
>>>> hdzhne
>>>> [EMAIL PROTECTED]
>>>> 2007-05-08
>>>>
>>>>
>>
>> = = = = = = = = = = = = = = = = = = = =
>>
>>
>> 致
>> 礼！
>>
>>
>> hdzhne
>> [EMAIL PROTECTED]
>> 2007-05-09
>>
>>
= = = = = = = = = = = = = = = = = = = =
致
礼！
hdzhne
[EMAIL PROTECTED]
2007-05-09
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