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Audio and Video quality?
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jessie214
Newbie
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2. January 2009 @ 07:07 |
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I have videos i want to edit but i don't know what is the best video and audio bitrate to use. For example: For mp3 the standard audio bitrate is 128 kbps. I was just wondering in regarding video and audio together what is the standard for mpeg, avi, flv files?
- Video Bitrate [kbps]
- Audio Bitrate [kbps]
2. What is the actual best quality without having the size go too high?
3. What is the best set resolution for mpeg, avi and flv files?
The program i sue which is called AoA DVD Ripper has a highest resolution of 1920by1072.
Which resolution would be best along with the audio and video bitrate quality?
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Senior Member
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2. January 2009 @ 15:14 |
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There isn't really any absolute bit-rates, usually recommended
minimums and maximums - as in for example, DVD.
The only absolute I know of is mpeg 1 VCD which used a CBR audio
and video.
Are you starting off with HD video (1080p ?) What is your target
format ?
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jessie214
Newbie
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2. January 2009 @ 23:40 |
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Originally posted by davexnet:
There isn't really any absolute bit-rates, usually recommended
minimums and maximums - as in for example, DVD.
The only absolute I know of is mpeg 1 VCD which used a CBR audio
and video.
Are you starting off with HD video (1080p ?) What is your target
format ?
The dvd is just standard. My main goal is too convert a certain scene in the dvd to mpeg or whatever file has less usage without loosing too much quality. The dvd quality of my dvd is very good. Now i know how to convert the files and all that but when it comes to settings and choosing which ones match the best for audio and video and taking less space without loosing the dvd quality.
I use the program called "AoA DVD Ripper" which allows me to convert the dvd files to whatever files i want.
But i dont what to choose for the options/settings.
Eg: AoA Dvd Ripper has these settings chooses for Mpeg:
Mpeg type:
- VCD PAL
- VCD NTSC
- SVCD PAL
- SVCD NTSC
Now if i choose any of the mpeg type the rest of the settings goes away.
Now if i select custom mpeg the rest of the options will open up.
*output framerate:
- 25.0 [PAL]
- 29.97 [NTSC]
- 30.0
*Resolution:
- 352 by 240 [ but i can write any number in the box i want]
* Mpeg video bitrate = 1150
* Mpeg audio bitrate = 224
Question 1: For mpeg if i use these settings video bitrate [1150] and audio bitrate [224] would that allow me to keep the good dvd quality?
Question 2: What happens if i select a higher resolution? Like 1920by1072... Do i need to change the video and audio bitrate? If so change to what settings?
Question 3: If i convert the dvd files to flv. files can i keep my good quality? And what are the best settings for converting dvd to flv. files?
- the resolution
- framerate
- video bitrate
- audio bitrate
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Senior Member
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3. January 2009 @ 00:05 |
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You still didn't mention what is your intended target.
Unless you know in your own mind (and mentioning it here wouldn't be
a bad idea since you're asking for advice:-).
you wont have any luck in figuring out what you need.
You gave this as an example:
*Resolution:
- 352 by 240 [ but i can write any number in the box i want]
* Mpeg video bitrate = 1150
* Mpeg audio bitrate = 224
This is the VCD rez and bit-rate. Perfectly acceptable
*if you want to make a VCD*
Most people in this forum asking for conversion help say something
like "I'm starting with A and I want to convert it to B"
You haven't said what B is. Are you looking for a converted file
for playing on the PC? The Ipod? Your PS3? A standalone DVD player?
What kind of editing? Just simple cut/copy /paste or are you
talking effects and transitions?
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jessie214
Newbie
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3. January 2009 @ 04:56 |
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Originally posted by davexnet:
You still didn't mention what is your intended target.
Unless you know in your own mind (and mentioning it here wouldn't be
a bad idea since you're asking for advice:-).
you wont have any luck in figuring out what you need.
You gave this as an example:
*Resolution:
- 352 by 240 [ but i can write any number in the box i want]
* Mpeg video bitrate = 1150
* Mpeg audio bitrate = 224
This is the VCD rez and bit-rate. Perfectly acceptable
*if you want to make a VCD*
Most people in this forum asking for conversion help say something
like "I'm starting with A and I want to convert it to B"
You haven't said what B is. Are you looking for a converted file
for playing on the PC? The Ipod? Your PS3? A standalone DVD player?
What kind of editing? Just simple cut/copy /paste or are you
talking effects and transitions?
Oh sorry... I'm starting with "A" which is a sports DVD and i want to convert to "B" mpeg, avi or flv file and save it onto my PC. [Basically it doesn't matter what file as long as the output video quality is as good as the DVD quality along with smaller MB]
I have the software program [AoA DVD Ripper] to convert DVD files to mpeg, avi or flv. files and i know how to achieve what i want or half what i want.
The only problem i have is i don't know what settings i should choose when i'm converting the DVD files [IFO] to mpeg, avi or flv. files.
I've did some research and it said the higher you set the video bitrate the better the video quality it is, but when i try that the video output was over 200MB which is not what i want.
I just want a good balance setting [video and audio bitrate] that would offer good quality and not make the MB go so high.
Question: Is it best to convert dvd to;
- mpeg 1 or mpeg 2
- avi
- flash file
- WMV
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Senior Member
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3. January 2009 @ 17:02 |
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Do you simply want to extract some clips for watching on the PC?
You said 200MB is too big, but you didn't state how many minutes and
seconds the clip you're referring to is. Difficult to have
an opinion on that without that info.
Why don't you try and create an AVI using the xvid or Divx encoder?
Set the video bitrate to perhaps 1000 kbps and audio,
160 kbps and see how it comes out.
If it's not what you want or expected provide some more info.
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jessie214
Newbie
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3. January 2009 @ 19:33 |
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You said 200MB is too big, but you didn't state how many minutes and seconds the clip you're referring to is. Difficult to have
an opinion on that without that info.
Once again i'm sorry for not giving you all the information.
Well, the actual DVD scene/chapter length is around 7 minutes and the settings was this;
*mpeg custom 1
- resolution [1920by1070]
- Video bitrate 1150kbps
- Audio bitrate 384kbps
Also i removed the interlace from video.
Well, anyway after i finished converting the output video was around 200MB.
Anyway so you recommend converting the file to avi?
Well thank you very much for your help :)
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jessie214
Newbie
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3. January 2009 @ 19:37 |
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Sorry to double post. Please forgive.
Do you simply want to extract some clips for watching on the PC?
Yes, that's what i am trying to do....
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Senior Member
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3. January 2009 @ 19:39 |
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Why are you using such a high resolution ? (1920 x 1070 you mentioned).
It could be perfectly OK if that's what you really want - but that's
why the file was so big (or one of the reasons).
Why don't you try avi? Use a resolution something like 640 x 480
and set the video and audio bitrate as I mentioned earlier ?
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jessie214
Newbie
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3. January 2009 @ 19:54 |
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Originally posted by davexnet:
Why are you using such a high resolution ? (1920 x 1070 you mentioned).
It could be perfectly OK if that's what you really want - but that's
why the file was so big (or one of the reasons).
Why don't you try avi? Use a resolution something like 640 x 480
and set the video and audio bitrate as I mentioned earlier ?
Well i'm a newbie :)
I have a 24" monitor so i thought i would go for the highest resolution the setting has.
Question: If i follow your settings and use avi, in the future can i can convert the avi to mpeg, flv. or back to dvd [ifo] file? Because i just know how to convert from dvd to mpeg, avi, etc....
My program allows me to just insert the disk and convert from the disk.
Once again thank you :)
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Senior Member
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3. January 2009 @ 20:46 |
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Originally posted by jessie214:
Originally posted by davexnet:
Why are you using such a high resolution ? (1920 x 1070 you mentioned).
It could be perfectly OK if that's what you really want - but that's
why the file was so big (or one of the reasons).
Why don't you try avi? Use a resolution something like 640 x 480
and set the video and audio bitrate as I mentioned earlier ?
Well i'm a newbie :)
I have a 24" monitor so i thought i would go for the highest resolution the setting has.
Question: If i follow your settings and use avi, in the future can i can convert the avi to mpeg, flv. or back to dvd [ifo] file? Because i just know how to convert from dvd to mpeg, avi, etc....
My program allows me to just insert the disk and convert from the disk.
Once again thank you :)
AH-Ha ! You wanted the image to fill the screen (or nearly).
That's a reasonable objective. Try xvid/divx AVI with the
HD profile.
Most of the files of this size (HD), people start to Migrate to H264
video and MKV files - Usually because you can get equivalent
quality @ smaller file sizes. Give Divx a go.
I got 57 MB for 3 minutes using the settings as shown.
This message has been edited since posting. Last time this message was edited on 3. January 2009 @ 22:02
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jessie214
Newbie
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7. January 2009 @ 04:00 |
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1 more question.... is there a way to improve on a poor quality video?
example: I've downloaded a video from youtube and its in flash file. the quality is o.k but little blurry.
is there a way to improve the quality of this video?
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Senior Member
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7. January 2009 @ 11:37 |
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Post a link to the youtube video in question and I'll take a look.
Is it an FLV file or MP4 or ?
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jessie214
Newbie
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8. January 2009 @ 00:34 |
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Senior Member
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8. January 2009 @ 01:57 |
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I had to laugh, almost blush I think. I never really thought about it.
I've always believed you can't always tell the gender of the person
you're chatting to in a forum, because there are so many ambiguous names.
I showed your comment to my 12 year old son and he had a
good laugh at that.
I downloaded one of the files - it's very difficult to improve it
because the source bitrate is just too low. Using Avisynth there
are a whole variety of filters you can try - but I'm a novice
at avisynth.
However, I softened it and made it slightly less blocky, but still
a little fuzzy. Take a look - it's mp4 > avi xvid.
http://www.savefile.com/files/1956385
Here's the other, this time from the FLV:
http://www.savefile.com/files/1956445
This message has been edited since posting. Last time this message was edited on 8. January 2009 @ 02:52
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jessie214
Newbie
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8. January 2009 @ 04:18 |
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Originally posted by davexnet:
I had to laugh, almost blush I think. I never really thought about it.
I've always believed you can't always tell the gender of the person
you're chatting to in a forum, because there are so many ambiguous names.
I showed your comment to my 12 year old son and he had a
good laugh at that.
I downloaded one of the files - it's very difficult to improve it
because the source bitrate is just too low. Using Avisynth there
are a whole variety of filters you can try - but I'm a novice
at avisynth.
However, I softened it and made it slightly less blocky, but still
a little fuzzy. Take a look - it's mp4 > avi xvid.
http://www.savefile.com/files/1956385
Here's the other, this time from the FLV:
http://www.savefile.com/files/1956445
What you said is very true.... you cannot really tell who your chatting to on the internet. The funny thing is what i said about you helping me is sort of true because alot of people and even in everyday life would most likely to help women/girls.
But anyway i would really like to say THANK YOU. God bless you.
Btw are you in the audio/video business?
Mixing, editing, etc.....
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Senior Member
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8. January 2009 @ 12:20 |
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Maybe it's a subconscious thing left over from the days of
chivalry, who knows.
I'm not in the business, just a hobby. I've even cleaned up a few
old B&W music videos from Youtube for myself in the past!
Good Luck -
Dave
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jessie214
Newbie
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9. January 2009 @ 21:51 |
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what program do you use when you want to convert avi to mpeg, flv. file?
i'm currently using prism video converter, but the trial period is nearly over and i don't have a credit card to pay for the full version.... so i was just wondering what program do you use or recommend?
thanks dave
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jessie214
Newbie
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9. January 2009 @ 21:58 |
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sorry to double post, but when using AVI XviD/DivX
In the option/setting section under avi video codec;
Which one do i select?
- XviD MPEG-4 Codec
- DivX 6.8.5 Codec (1 Logical CPU)
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Senior Member
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10. January 2009 @ 00:31 |
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Hello -
you can use xvid or Divx, results and usage are similar.
Regarding FLV creation, it's something I know nothing about
(never did it before!)
Regarding handling FLV > AVI, I use FLV extract.
http://moitah.net/ Open this tool and drag the FLV onto the
small window. The contents will be extracted and placed in the same
folder as the FLV file.
Most FLV files after extracting with this tool produce an avi file
and mp3 audio. If you install FFDshow and enable the FLV codec in
it's VFW config settings, you can open these avi's in Virtualdub
and combine the mp3 audio.
From there you can save as xvid or divx avi. It's a little more
complicated, but you get access to virtualdubs filters and
you can cleanup the video a little - and of course it's free.
For Mpeg creation there is the free version of Tmpgenc 2.5
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jessie214
Newbie
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11. January 2009 @ 01:17 |
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Before you said try using AVI when converting DVD to PC. You also said use "DivX", right?
I have a LCD TV which can watch movies up to 1080p. And a DVD player that can play DivX videos.
My problem is when i convert DVD to AVI and play it in the DVD player, the output video is not full screen. I selected 16:9 ratio, but when i play the AVI video it does not full screen.
The DVD Ripper i used was AoA DVD Ripper and the default AVI resolution settings was 720by480. Every settings was on default.
Can you help me with the settings and configuration of using "DivX" please? I want to convert DVD to AVI and be able to watch in full 720p or 1080p. Full screen.
Example:
Under "settings" AVI video codec;
*DivX 6.8.5 codec [logical cpu]-----> configure;
- Encoding presets:
1<---->10 = Which number do i select?
- Rate control:
. 1-pass quality based
. 1 pass
. multipass, 1st pass
. multipass, nth pass
. multipass, 1st pass (fast)
Which one do i select?
- Video resolution ---> format in;
. square pixels
. pal 4:3
. pal 16:9
. custom
- video resolution ----> format out;
. square pixels
. pal 4:3
. pal 16:9
. custom
Which one do i select?
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Senior Member
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11. January 2009 @ 02:10 |
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You want to convert dvd to avi to play on your big screen TV?
Perhaps you should try one of the programs that specialize
in this, AutoGK comes to mind. http://www.autogk.me.uk/
Don't get confused by the terms. "avi" is just the container or holder
of the data. The video data can be divx, xvid and a number of others,
but for our purposes this is all we're interested in.
(there is also a container called Divx, but it's almost the same
as avi - so don't worry about that.)
Regarding the divx encoder options. Here's my advice. Select
"restore defaults" and set rate control to 1-pass quality based=4.
It's normal practice that the avi has 1:1 pixels, so for example,
a movie with resolution 640*272 = wide screen movie-aspect ratio
2.35.
Assuming you successfully create the avi (which has the correct
aspect ratio when viewed on the PC), any success you have in getting
it to fit your WS TV is a function of the player and/or the TV itself.
Since TV's have different capabilities re: zooming and other tricks to
make the image fit the screen, I can't comment on that.
This message has been edited since posting. Last time this message was edited on 11. January 2009 @ 02:18
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jessie214
Newbie
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11. January 2009 @ 02:37 |
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Once again, thank you "Davexnet"
You really helped a lot
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jessie214
Newbie
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11. January 2009 @ 02:46 |
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one more thing
video resolution format in and out;
- square pixels
- pal 4:3
- pal 16:9
does it matter which i choose?
the default has it on "square pixels"
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Senior Member
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11. January 2009 @ 11:06 |
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Those settings from the Divx encoder?
Why don't you try a small clip and let us know.
As far as I have seen, most DVD players ignore it and treat it
as 1:1 anyway.
Are you in PAL land?
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