[x264-devel] Re: tiles

Tobias Bergmann tobias.bergmann at gmx.de
Fri Sep 30 18:16:28 CEST 2005


Sachin Patil wrote:
> reamer-s at Safe-mail.net wrote:
> 
>> I am new to 264 so please excuse my ignorance.  Can the multi-slice or 
>> some other feature be used to segment the image into a few (perhaps 
>> six or less) non-overlapping rectangular tiles, none of which  
>> encompass a complete scan line of the original image?  If not, is 
>> there anything to prevent me from stictching an image together from 
>> separately encoded tiles in a manner which will be transparent to most 
>> decoders?  If so, is this approach also likely to work with other 
>> MPEG-4/AVC-like formats?
>>
>> RS
>>   
> 
> The concept of encoding in slices and stitching together a final 
> bitstream is quiet frequently used in cases where a multiprocessor 
> system is available to improve encoding speeds. The H264 standard itself 
> supports the slice encoding feature very well. This approach will work 
> with other AVC like formats if slice level encoding is supported.
> hth
> SP.

ASP supports it even better as no in-loop filter is involved and thus 
multi-slice encoding can be completely transparent.
It's even not neccessary to lose quality when all threads have the 
complete reference frames at their disposal :)

But no one volunteered to code that yet.

bis besser,
T0B1A5

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