[Ffmpeg-cvslog] r7148 - trunk/libavcodec/mpegvideo.c

[Baptiste Coudurier]

Michael Niedermayer wrote:
> Hi
> 
> On Fri, Dec 01, 2006 at 03:35:08PM +0100, Baptiste Coudurier wrote:
>> Hi
>>
>> michael wrote:
>>> Author: michael Date: Tue Nov 21 20:37:44 2006 New Revision: 7148
>>>
>>> Modified: trunk/libavcodec/mpegvideo.c
>>>
>>> Log: fix b frames + -mbd rd without -psnr (yes that was seriously
>>> buggy and probably hasnt been noticed as everyone who tested stuff
>>> used -psnr)
>>>
>>>
>> Great. Thanks a lot. It seems now rc is being quite efficient, and
>> infinite loop is fixed.
>>
>> However, I will again bother you. I got another sample which seems to
>> cause weird high q on I frames.
>>
>> qprd_high_i.mpg on mplayerhq.
>>
>> latest svn.
>>
>> ffmpeg -i qprd_high_i.mpg -flags +qprd -b 3995k -minrate 3995k -maxrate
>> 3995k -bufsize 2500k -mbd rd -bf 2 -mblmin 1 -lmin 1 test.vob
>>
>> First I frames are really visually blocking. If I remove -lmin -mblin,
>> frames are correctly encoded.
> 
> is this also happening without qprd?
> does the patch from Jindrich ([patch] rc buffer bits reservation for I-frames)
> help?
> 
> [...]

Yes it still happens without qprd, and it still happens with Jindrich
patch. See attached file. It is even weirder with Jindrich's patch it seems.

-- 
Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
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