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Mainconcept H.264 Encoder Preview released
bond
post Feb 11 2004, 10:58
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QUOTE
MainConcept is proud to announce the immediate availability of our H.264 Encoder Preview Version for Microsoft® Windows®! Although not yet optimized for speed, this free demo will enable you to sample the quality of our newest codec. H.264 AVC (Advanced Video Coding), also known as MPEG-4 Part 10, is an exciting new standard which offers many advantages and has the potential to replace existing standards.

Our H.264 Encoder Preview Version also includes our H.264 Decoder, enabling you to play H.264 files in Windows Media Player and other compatible programs.

NOTE: This demo version places a watermark on encoded material.


http://www.mainconcept.com/h264_encoder.shtml

http://www.heise.de/newsticker/meldung/44488 (german article)


my first impression:
i compared xvid with qpel, trellis, vhq4 and 2 b-frames, other sttings on default and the mainconcept encoder with the default settings and main profile using a very small (!) test clip: neo using his mobile phone in matrix1

imho h.264 brings already pretty good results at ~500kbps bitrate, tough not comparable to xvid sharpness-wise (maybe i should have tried xvid without qpel?)
but the quality seems to be strongly fluctuating, meaning it seems that sometimes the picture is blurry, than sharp again, than blurry, with blocks sometimes showing up in between... (maybe thats a decoding issue?)

all-in-all not bad for a start, and i think there is _a lot of_ room for improvements (imagine how normal mpeg-4 part2 encodes looked like some years ago biggrin.gif )


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Gabriel
post Feb 12 2004, 18:46
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QUOTE
so,what's the difference?
1-vdub or avs cleaned video;less noise in I-frame=less noise in subsequent P's....
2-h264's inloop;codec denoises,result is the same


There is a huge difference. H264 is storing block residues against "deblocked" reference picture, not against simply unquantized picture. This way, the residues to store after motion compensation are way smaller.

QUOTE
this sort of filtering is a BAD thing and shows that desperate measures are employed;this just blurs the image

Try encoding a 100kbps video, using SP or MP, you will quickly understand how this could be beneficial.
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Posts in this topic
- bond   Mainconcept H.264 Encoder Preview released   Feb 11 2004, 10:58
- - Gecko   QUOTE (bond @ Feb 11 2004, 10:58 AM)but the q...   Feb 11 2004, 18:39
- - bond   QUOTE (Gecko @ Feb 11 2004, 06:39 PM)AFAIK th...   Feb 11 2004, 18:47
- - i4004   just in time (doing some very lo bitrate encodings...   Feb 12 2004, 01:31
- - Gabriel   QUOTE inloop filtering?for filtering we have avs a...   Feb 12 2004, 08:30
- - i4004   so,what's the difference? 1-vdub or avs cleane...   Feb 12 2004, 10:36
- - Gabriel   QUOTE so,what's the difference? 1-vdub or avs ...   Feb 12 2004, 18:46
- - i4004   you're right,but in your first answer you ment...   Feb 12 2004, 21:27
- - Bonzi   I did some very short encodes with this encoder wh...   Feb 15 2004, 03:47
- - idioteque   QUOTE (i4004 @ Feb 12 2004, 04:36 AM)the trou...   Feb 15 2004, 06:42
- - i4004   bonzi,does that look like key-frame "pumping...   Feb 15 2004, 11:24
- - Bonzi   QUOTE (i4004 @ Feb 15 2004, 02:24 AM)bonzi,do...   Feb 15 2004, 17:08
- - bond   i am pretty sure their decoder filter is borked (o...   Feb 15 2004, 20:40
- - Latexxx   Has anyone tried to play these files using mplayer...   Feb 15 2004, 21:06
- - Bonzi   QUOTE (Latexxx @ Feb 15 2004, 12:06 PM)Has an...   Feb 15 2004, 21:17
- - i4004   anyone tried moonlight? http://www.moonlight.co.il...   Feb 19 2004, 14:04
- - bond   hm is this moonlight "player" a dshow fi...   Feb 19 2004, 14:08
- - i4004   i'm having "KF-pumping" issues on ...   Feb 19 2004, 19:06
- - idioteque   QUOTE (i4004 @ Feb 19 2004, 01:06 PM)i believ...   Feb 19 2004, 21:37
- - i4004   @bond:excellent job mate;now my links are listed i...   Feb 23 2004, 20:04
- - i4004   quoting bond from doom9 ( http://forum.doom9.org/s...   Feb 26 2004, 19:17


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