quenc0.54 superior quality to anything later?

[drcl]

is it only me, or are versions with the updated libavcodec inferior?

seems to me on lower bitrate encodes - which show the weaknesses of an video encoder - 0.54 is the pinnacle of quality for QuEnc, especially so on interlace source.

Indeed, i cant find anything to match it for sharpness and perceptual quality on a tv screen, not even CCE in my opinion.

I guess what im asking is, is there any chance of a release with all the added features of 0.59 but with the older libavcodec ?

[drcl]

doesnt any one have an opinion?

[Mr_Schizo]

I have the same opinion but i haven't tested it that much to make any valid statements about it.

[freelock7]

The older libavcodec is very nervous with bitrate spike and doesn't work properly with scene change enabled (I frame inserted).
The last version seems to be more compliant with MPEG2 specifications and the RC is more stable with a quantizer optimized.
Scene change works too.
Unfortunately, under 3000kbs, it's a little bit worse.
So I suggest to use QuEnc0.54 & 0.55 with caution for low bitrate encoding until the next version.

[drcl]

yes, definetely under 3000kbit/s is where i noticed it. Hard to distinguish between on higher rates but i prefer to be as efficient as possible.

I realise the bitrate spike was somewhat a problem but i never had a problem with DVDs even if they went above 9.8Mbit for a short while.

I dont know what you mean about mpeg spec compliance, as I know nothing about mpeg beyond the basic structure. I know what scene change is but i didnt really notice any bad effect from it not working correctly. I suppose i should scan that huge thread instead of picking your brain.

I think it was 0.55a when Nic changed over to the later Libavcodec, so i stuck to 0.54.

Is there any reason why post 0.54 seems about 50% slower? Noise shaping or smoothing maybe? Using mencoder with noise shaping gave about the same performance hit I believe.

[Trahald]

The thing about bitrate spikes is that the spike was probably a frame that truely needed the bitrate. bad thing is forcing it into compliancy forces the quantizer higher and in essence uglifies the encode to an extent. sorta a catch 22.. i would say stick with .54 if that works for you .. but ultimately an encoder wont hit prime time until it can make output all dvd players can play (either for svcd or dvd)

[dragongodz]

forcing it into compliancy forces the quantizer higher and in essence uglifies the encode to an extent.
uglifies ????? HAHAHA.
Trahald means may reduce quality of course. :D

[jdobbs]

LOL. Uglifies. Hmmm... I went to a high school reunion a few years back, and some of the girls I knew back then must have been trying really hard to keep their bitrate down.

Whoops... I hope someone will forgive this OT note, I just couln't resist...

[Trahald]

Originally posted by dragongodz
uglifies ????? HAHAHA.
Trahald means may reduce quality of course. :D
Agreed

@Jdobbs

LOL