QuEnc 0.60 Released! - Page 18

Rockas · 22nd March 2006, 01:20

Quote:

Quote:
muxprofile to output an mp3 I receive a Windows error and QuEnc terminates
well its not supported via cli yet so nothing would surprise me that way.

No... that one is using the GUI

Quote:

Quote:
if I choose output as MP4 on QuEnc GUI and then I try to encode (via CLI) the audio (still using my scripts above) to AC3... QuEnc terminates... it seems like not being updated with the new parameters from the CLI and still try to use the last ones inserted on the GUI...
did you also try setting it to mpeg2 with "-mpeg2" since thats where the ac3 encoder is ?

I'll run some tests tomorrow (your today

) and let you know about that

Quote:

just look at all the work Rockas keeps giving me.

Yeah! but admit it... you love every minute of it (work)!!!

and besides... that's why I pay you

Quote:

haha but i like where i live. its not perfect by any means but better than other places i have been.

Well... as long as you don't come to Portugal... you'll be fine

take a look: http://www.portugalforbeginners.pt.vu/

Rockas · 22nd March 2006, 01:23

oh! by the way... I really hope you get better quick... this ain't any fun without you

dragongodz · 22nd March 2006, 02:14

Quote:

No... that one is using the GUI

ok just tested it. let me guess, you tried to encode audio with more than 2 channels ? that does cause QuEnc to fail of course since normal mp3 is 2 channel max. i tried it with 2 channel source and it worked fine. you can of course also use Avisynth to downmix to 2 channel(stereo).

Quote:

besides... that's why I pay you

i get paid ? damn the postman must have been ripping off the letters with the cheques in them.

Quote:

take a look: http://www.portugalforbeginners.pt.vu/

hahaha opened up the celebrity page to find
"There aren't many."
i also liked the Brad Pitt entry at the bottom.

Rockas · 22nd March 2006, 10:25

Quote:

ok just tested it. let me guess, you tried to encode audio with more than 2 channels ? that does cause QuEnc to fail of course since normal mp3 is 2 channel max. i tried it with 2 channel source and it worked fine. you can of course also use Avisynth to downmix to 2 channel(stereo).

Yes... I thought about something like that but the main issue is that QuEnc crashes... is shouldn't... message error? yes ... crash... not good

Quote:

i get paid ? damn the postman must have been ripping off the letters with the cheques in them.

uummm... maybe he's portuguese!?!?!

Quote:

hahaha opened up the celebrity page to find
"There aren't many."
i also liked the Brad Pitt entry at the bottom.

You must read it all... I read it... it's one of the funniest things I have ever seen

Don't forget to read "Essential Portuguese" section

Rockas · 22nd March 2006, 11:01

Quote:

did you also try setting it to mpeg2 with "-mpeg2" since thats where the ac3 encoder is ?

Sorry... you were right about this one... the problem is that I assumed that when inserting "-mpeg2mux" it would be enough

... it was working for video

dragongodz · 23rd March 2006, 02:52

Quote:

message error? yes ... crash... not good

of course. however this is new of course so in no way is everything done for it. you have just found 1 more thing to fix before a release version.

or think of it this way. Nic adds the basic features he wanted and leaves me the job of cleaning it up for everybody else.

Quote:

the problem is that I assumed that when inserting "-mpeg2mux" it would be enough

you do know what assumption was the mother of right ?

i will probably change some of the behaviours of commands etc to a more logical way anyway.

Ebobtron · 23rd March 2006, 17:26

Hi all,
I would like to add my two cents concerning encoding ac3 ?

QuEnc61 always seems to reduce the audio level approximately 10db in the encoded output.

Following list should explain:

> than 0 db input.. -10db output
0 db input.. -10db output
-3 db input.. -13db output
-6 db input.. -16db output

Number of channels makes no difference in the output.

10db is a heavy reduction in volume. Don’t remember anyone ever complaining about it. But it has been a long time.

Just wanted to add this to the list.

Thanks Dragon

Rockas · 23rd March 2006, 17:55

Yes I believe you are right... I was suspicious about it but I was not sure...
I thought it could be a difference between players and not an encoder result and since I'm busy with other issues I didn't gave it any importance

edit: I made a quick review on my SynthEditor (development) notes (yes... sometimes I take some notes

) and there it was.

Quote:

Remember to verify sound output volume... sound seems low... AviSynth problem?
Trying todo:
Don't forget to try "normalize" on AVS Script!!!

[Sorry for the bad english - direct translation from portuguese

]

dragongodz · 24th March 2006, 13:42

Quote:

always seems to reduce the audio level

yes a known problem. you can find out more in the audio section. other programs use things like normalisation from memory to fix it. will have to relook over those threads again.

of course you can increase volume in Avisynth aswell to reduce this problem aswell.

actually going from memory there was a patch submutted a long time ago to the ffmpeg mailing list that was meant to fix this. it was not accepted for whatever reason. i did look for it before but failed to find it. now if someone still had that floating around it could be helpful.

Rockas · 24th March 2006, 17:01

Well.. I just added a "AmplifyDB(9)" to my "Audio to encode script"... I put 9 'cause it seemed to my hears that 10 was exagerated and maybe 9... I'll wait for some feed back about this but I feel like 8 would be a good value...
I'll keep on testing

Ebobtron · 24th March 2006, 18:13

@dragongodz
yes, I thought the ac3 levels issue had been bounced around. It has been so long I remember it not.

@Rockas
I can only offer this caution. QuEnc has some kind of limiter or clamp working, but shows no signs of normalization for low or high level input. My ears tell me some clipping begins if I push the input level to high.

I believe, and my tests show that the max output of QuEnc's ac3 encoder is -10db. You may input +20db, I think you will find a -10db out which sounds clipped. If you input -10db your result will be -20db.

dragongodz’s suggestion to normalize would make more sense.

But I think for know -10 is all we are going to get.

Rockas · 24th March 2006, 18:29

I made a few tests with "AmplifyDB(9)" and it didn't look like cliping is occuring... I just released my new SynthEditor with AmplifyDB(9) enabled... can you try it for a little?

In the mean time I'll try with some more different sources.

Quote:

dragongodz’s suggestion to normalize would make more sense.

ummm... I don't know about that... if QuEnc encodes -10db then the sound will always get a lower level... maube it can help a little but...

thank you

Zarxrax · 24th March 2006, 20:36

Would it be possible to implement DV encoding in QuEnc? Unless I'm mistaken, its just a specific case of mpeg-2, right?

Rockas · 24th March 2006, 20:38

At this point SynthEditor is supposed to encode DV using AviSynth... QuEnc for audio and QuEnc/HC for video... target size will be accurate... I hope

Zarxrax · 25th March 2006, 03:31

Quote:

Originally Posted by Rockas

At this point SynthEditor is supposed to encode DV using AviSynth... QuEnc for audio and QuEnc/HC for video... target size will be accurate... I hope

Oh, interesting

communist · 25th March 2006, 08:00

Quote:

Originally Posted by Zarxrax

Would it be possible to implement DV encoding in QuEnc? Unless I'm mistaken, its just a specific case of mpeg-2, right?

No its more like an "advanced MJPG".
Since QuEnc uses libavcodec a LOT of formats could be added but I dont think thats what everyone wants - since implementeng / testing / bug-fixing etc. them will take quite some time.

Sagittaire · 25th March 2006, 21:14

@ dragongodz

Libavcodec (and QEnc) seem buggy for quant value only for MPEG2.

OSD for ffdshow show x2 real scaling for quantizer (only 2,4,6,8 ... etc etc)

dragongodz · 26th March 2006, 01:46

Sagittaire - can you explain in a bit more detail what you mean ?

Zarxrax · 26th March 2006, 02:34

Sagittaire, I believe it is probably a bug in FFDshow. Try with a different encoder. Using TMPGenc at the highest bitrate settings FFDShow says its using Quant 2.

Also examining the files (mpeg1 only, there should be no difference though) in MPEG_Stat, reports that the frames are encoded at Quantizer 1.

dragongodz: can we maybe expect a new beta version soon, I hope?

Sagittaire · 26th March 2006, 13:08

Quote:

Originally Posted by Zarxrax

Sagittaire, I believe it is probably a bug in FFDshow. Try with a different encoder. Using TMPGenc at the highest bitrate settings FFDShow says its using Quant 2.

1) I'ts wrong : TMPGEnc max quality (CQ100) done quantizer 1 for each macroblock without vbv limitation. FFDShow OSD macroblock quantizer show that only for Libavcodec MPEG2. MPressionist MPEG-2 Analyzer seem show same quantizer than FFDShow.

2) In fact Libavcodec show internaly that it use 1, 2, 3 ... etc but in fact Libavcodec apply x2 scaling for quantizer and use only 2, 4, 6 ... etc for each frame or macroblock if you use adaptative quantisation.

You can make little experience too:
Libavcodec constant quant encoding q2 done approximatively the same bitrate than all other MPEG2 encoder (HC, TMPGEnc, CCE ... etc) at q4 with same source, matrix, dc ... etc

In fact Libavcodec can't simply use impair quantizer for MPEG2 (for frame or macroblock) and use only pair quantizer. This "bug" can explain for example saturation for Libacodec at very high bitrate because use quantizer 1 is simply impossible ... ???

22nd March 2006, 01:23	#342 \| Link
Rockas Ridendo Castigat Mores Join Date: Mar 2003 Location: Portugal Posts: 1,509	oh! by the way... I really hope you get better quick... this ain't any fun without you __________________ None is as blind as those that don't listen. www.dvdrebuilder.com RME Rockas Software

24th March 2006, 17:01	#350 \| Link
Rockas Ridendo Castigat Mores Join Date: Mar 2003 Location: Portugal Posts: 1,509	Well.. I just added a "AmplifyDB(9)" to my "Audio to encode script"... I put 9 'cause it seemed to my hears that 10 was exagerated and maybe 9... I'll wait for some feed back about this but I feel like 8 would be a good value... I'll keep on testing __________________ None is as blind as those that don't listen. www.dvdrebuilder.com RME Rockas Software

24th March 2006, 20:38	#354 \| Link
Rockas Ridendo Castigat Mores Join Date: Mar 2003 Location: Portugal Posts: 1,509	At this point SynthEditor is supposed to encode DV using AviSynth... QuEnc for audio and QuEnc/HC for video... target size will be accurate... I hope __________________ None is as blind as those that don't listen. www.dvdrebuilder.com RME Rockas Software

25th March 2006, 21:14	#357 \| Link
Sagittaire Testeur de codecs Join Date: May 2003 Location: France Posts: 2,484	@ dragongodz Libavcodec (and QEnc) seem buggy for quant value only for MPEG2. OSD for ffdshow show x2 real scaling for quantizer (only 2,4,6,8 ... etc etc) __________________ Le Sagittaire ... ;-) 1- Ateme AVC or x264 2- VP7 or RV10 only for anime 3- XviD, DivX or WMV9

26th March 2006, 01:46	#358 \| Link
dragongodz .... Join Date: May 2002 Location: Australia Posts: 2,797	Sagittaire - can you explain in a bit more detail what you mean ? __________________ Narrator: And of course, with the birth of the artist came the inevitable afterbirth - the critic. (History of the World part 1)

23rd March 2006, 17:26	#347 \| Link
Ebobtron Errant Knight Join Date: Oct 2004 Location: St Louis, M0 US Posts: 364	Hi all, I would like to add my two cents concerning encoding ac3 ? QuEnc61 always seems to reduce the audio level approximately 10db in the encoded output. Following list should explain: > than 0 db input.. -10db output 0 db input.. -10db output -3 db input.. -13db output -6 db input.. -16db output Number of channels makes no difference in the output. 10db is a heavy reduction in volume. Don’t remember anyone ever complaining about it. But it has been a long time. Just wanted to add this to the list. Thanks Dragon

24th March 2006, 18:13	#351 \| Link
Ebobtron Errant Knight Join Date: Oct 2004 Location: St Louis, M0 US Posts: 364	@dragongodz yes, I thought the ac3 levels issue had been bounced around. It has been so long I remember it not. @Rockas I can only offer this caution. QuEnc has some kind of limiter or clamp working, but shows no signs of normalization for low or high level input. My ears tell me some clipping begins if I push the input level to high. I believe, and my tests show that the max output of QuEnc's ac3 encoder is -10db. You may input +20db, I think you will find a -10db out which sounds clipped. If you input -10db your result will be -20db. dragongodz’s suggestion to normalize would make more sense. But I think for know -10 is all we are going to get.

24th March 2006, 20:36	#353 \| Link
Zarxrax Registered User Join Date: Dec 2001 Posts: 1,219	Would it be possible to implement DV encoding in QuEnc? Unless I'm mistaken, its just a specific case of mpeg-2, right?

26th March 2006, 02:34	#359 \| Link
Zarxrax Registered User Join Date: Dec 2001 Posts: 1,219	Sagittaire, I believe it is probably a bug in FFDshow. Try with a different encoder. Using TMPGenc at the highest bitrate settings FFDShow says its using Quant 2. Also examining the files (mpeg1 only, there should be no difference though) in MPEG_Stat, reports that the frames are encoded at Quantizer 1. dragongodz: can we maybe expect a new beta version soon, I hope? Last edited by Zarxrax; 26th March 2006 at 02:39.

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