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19th February 2006, 11:29 | #1 | Link |
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XviD Quantizer Numbers
I am using Avidemux to encode my XviD in single pass quantizer mode. I was wondering if it is possible to set the rate to 1? This is not a direct Avidemux questions, more of a question relating to whether or not 1 is a valid number for a rate in the quantizer feature in XviD.
Thanks in advance. BTW, I already asked at the avidemux forums, they are not sure. |
19th February 2006, 11:35 | #2 | Link |
Mr. Sandman
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q1 is valid but it will produce a huge file with similar quality to q2.
q1 is almost useless unless used with special designed custom quantization matrices.
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19th February 2006, 11:37 | #3 | Link | |
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19th February 2006, 15:26 | #4 | Link |
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In the VfW XviD defaults, quant=1 is allowed. The only reason for that is the encredible and annoying amount of complaints about 'undersizing' that we used to get on the forum. Some folks don't understand the concept of a 'saturation point'.
If it weren't for that, limiting quantizers from 2 to 31 would be the only sane thing to do. Quant=1 is only there to eat up bitrate; higher quality usually comes with lower-coefficient custom quantization matrices, not with using quant=1 with the standard matrices. As limiting quantizers in Avidemux appareantly doesn't cause another flood of 'undersizing-complaints' here, I'd say, they should keep it 2-31.
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19th February 2006, 23:22 | #5 | Link | |
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20th February 2006, 08:49 | #6 | Link |
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I'm especially happy to hear from XviD's Linux userbase here. Glad to help.
Can we expect Avidemux to expose all XviD options in a new release? I've never really used Avidemux because it cannot load custom quantization matrices. Edit: You know, I'll be missing something like a full-blown Linux MeGUI/VirtualDub equivalent by the time we get AviSynth 3 on Linux. This will be the point when I'm gonna get the craving to do everything (editing, encoding to XviD and x264) on the Linux machine. So please excuse me when I'm (trying) to get a bit pushy here.
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It's a man's life in Doom9's 52nd MPEG division. "The cat sat on the mat." ATM I'm thoroughly enjoying the Banshee - a fantastic music player/ripper for Linux. Give it a whirl! Last edited by Teegedeck; 20th February 2006 at 09:03. |
21st February 2006, 03:05 | #7 | Link | ||
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The plans for avidemux in the future are thus: 1) finish the implementation of the mp4 format. 2) Modernize the XviD codec configure interface (I suppose we could add the matrices there). 3) Add the rest of the options for x264/h264. I should note that items 2 and 3 really don't have a set priority and may be done in reverse order or side by side. Quote:
I find Avidemux to be close to Virtualdub in its use. I used VDub a ton back my windows days, and now I use linux. On a side note concerning features I am trying to see added to Avidemux, I am hoping to get: 1) Soft-subtitles 2) MKV format 3) eventually I would like to see a better multi-audio track system 4) Allows for VBR audio (if only external file input) 5) Codec configuration option pre-set saving 6) Better job list/queue system (simple GUI and feature improvements, nothing major) There are also some bugs in the LPCM and AC3 type audio codec/formats we have to fix as well, though they are minor. I really don't write much code right now (meaning I written VERY little), but I am hoping to do more in the future. The main programmer of Avidemux (Mean) is currently in the process of moving into his new home/apartment right now, so he does not have constant internet yet. Thus there has not been many updates to the SVN files for a week or more, but he's been working on quite a bit at home and I except when he returns there will be many updates. I am hoping he will finish the mp4 code soon, he sounds like he will be. |
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21st February 2006, 08:43 | #8 | Link |
Mr. Sandman
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what's the official web of avidemux? i found 4 or 5 different websites on google...
EDIT: ok, nevermind... those are all mirrors
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MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!! |
21st February 2006, 13:46 | #9 | Link |
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The more I read about it, the more I like it. I see that TDeint has already been integrated. So there's one important function that I'd need already implemented. Nice, nice. Keep up the good work!
Edit: MKV output would be great alright (though I can always use mkvmerge, of course) and, yeah, audio encoding is what I feel could really use improvement.
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It's a man's life in Doom9's 52nd MPEG division. "The cat sat on the mat." ATM I'm thoroughly enjoying the Banshee - a fantastic music player/ripper for Linux. Give it a whirl! Last edited by Teegedeck; 21st February 2006 at 13:54. |
21st February 2006, 18:26 | #10 | Link |
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other things
Important things to add to the XviD4 config in Avidemux:
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It's a man's life in Doom9's 52nd MPEG division. "The cat sat on the mat." ATM I'm thoroughly enjoying the Banshee - a fantastic music player/ripper for Linux. Give it a whirl! |
22nd February 2006, 04:04 | #11 | Link | ||
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22nd February 2006, 12:10 | #12 | Link | |||
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It's a man's life in Doom9's 52nd MPEG division. "The cat sat on the mat." ATM I'm thoroughly enjoying the Banshee - a fantastic music player/ripper for Linux. Give it a whirl! Last edited by Teegedeck; 22nd February 2006 at 12:12. |
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22nd February 2006, 21:39 | #13 | Link | ||
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22nd February 2006, 21:59 | #14 | Link |
Mr. Sandman
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The speedup for the first pass can be "massive"... so, yes, it's quite important
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MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!! |
22nd February 2006, 22:27 | #15 | Link | |
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23rd February 2006, 04:42 | #16 | Link | |
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VfW's "full quality 1st pass" works by pretending that entire movie is a quant2 zone. It's a trick. |
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23rd February 2006, 09:38 | #17 | Link |
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Call me a fool because I am! I must have forgot to activate QPel and GMC on the sample I encoded with Avidemux or something because I'm testing again now, and everything seems to be as it should be; second pass noticeably slower!?! Yes, I tested only once before, and sloppily. Is a different arrangement of switches in Avidemux' GUI enough to confuse me to the point that I forget to activate some switches or did I press cancel instead of OK after modifying settings? Anyway, bloody stupid of me. Forget it and paint whiskers on me while I sleep.
I'm very sorry indeed for the unnecesary call for improvements there. P.S. SadaraX, I meant an RPM for the all-in-one-MKV-application you mentioned.
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It's a man's life in Doom9's 52nd MPEG division. "The cat sat on the mat." ATM I'm thoroughly enjoying the Banshee - a fantastic music player/ripper for Linux. Give it a whirl! |
24th February 2006, 00:51 | #18 | Link | |||
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http://www.bunkus.org/videotools/mkv...downloads.html After you get that installed, run the command 'mmg' for the mkv-tool GUI. You said you're not much into Linux, do you know how to use the apt system? If you are using redhat, you may want to use their apt-rpm system to automatically install the program, though you may have to add their download repository to your apt-package list. |
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