#1 2008-08-23 01:15:01

gertsolo
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mkv to avi

Hey,

I have a freecom mediaplayer which doesn't support mkv (x264) files.
Super is about the first program I found that can convert it in a decent way to avi.
It takes a lot of time to convert it so I would like to know what are the best parameters for the best quality (output video codec, audio codec, options, etc) no matter what size.
The MKV files are HD quality so the resolution is very important.

Since I have to wait a LONG time I want it to be done in a right way.

Any Help is welcome,

gertsolo

Last edited by gertsolo (2008-08-23 01:15:54)

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#2 2008-09-01 14:45:06

chinaboat
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Re: mkv to avi

This seems to be the problem:

If the audio codec is Vorbis, Super C can't seem to handle it

1. I used six mkv files from as many sources. I wanted Super C to convert them to DivX or Xvid files. The only setting I changed were: Video Scale: 320:240/Aspect Ration 4:3/frame rate 23.976; other than the frame rate I probably didn't have to change any of them.

2. Four converted just fine; two did not. The only thing the two had exclusively in common was the Vorbis Codec.


Ok, it looks like I may have figured out what the problem is - now what's the solution?

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#3 2008-09-02 10:41:52

gertsolo
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Re: mkv to avi

Thanks for the reply Chinaboat.

I did a lot of searching on the net and it seems that a high resolution mkv just can't be converted to an avi.

I found this on their site:

http://www.matroska.org/technical/guides/dvd/index.html

Sad but true...

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#4 2008-09-02 11:13:05

96crypt_mod
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Re: mkv to avi

gertsolo wrote:

high resolution mkv just can't be converted to an avi.

mkv is a container, like mp4, mov, avi, mpg, vob, wmv, flv etc..
any high resolution content requires lot of memory, a fast CPU, a minimum of
7200 rpm HardDisk with high access time: whether for decoding or encoding.
We have carried out many tests on various mkv formats, they all encode great on
our systems.
as we have installed various ActiveX decoders, we often keep "DirectShow Decode" checked.

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#5 2008-09-02 20:17:47

chinaboat
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Re: mkv to avi

I agree with 96c about high res content and my machine is more than adequate but is the fact that Super only converts 25-35% of certain mkv's due to the vorbis audio codec? And if not what causes it to quit after encoding 55mb or less of a 192mb file? I assume it does so because it senses the file as been totally encoded.

Whether vorbis is the culprit or not I still think that Super is great (I'm encoding 6 files as I type this) and think my donation was well placed.

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#6 2008-09-03 08:20:02

gertsolo
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Re: mkv to avi

96crypt_mod wrote:

gertsolo wrote:

high resolution mkv just can't be converted to an avi.

mkv is a container, like mp4, mov, avi, mpg, vob, wmv, flv etc..
any high resolution content requires lot of memory, a fast CPU, a minimum of
7200 rpm HardDisk with high access time: whether for decoding or encoding.
We have carried out many tests on various mkv formats, they all encode great on
our systems.
as we have installed various ActiveX decoders, we often keep "DirectShow Decode" checked.

Okidoki

If I have this kind of file, what would be the settings for the best result to avi


      Format : Mk
      File size : 4.37 GiB
      PlayTime : 2h 14mn
      Bit rate : 4662 Kbps
      Encoded date : UTC 2007-07-31 19:32:47
      Writing application : mkvmerge v2.0.2 ('You're My Flame') built on Feb 21 2007 23:40:55
      Writing library : libebml v0.7.7 + libmatroska v0.8.1
   Video #1
      Codec : MPEG-4 AVC
      Codec/Info : MPEG4 ISO advanced profile
      PlayTime : 2h 14mn
      Width : 1280 pixels
      Height : 544 pixels
      Display Aspect ratio : 2.35
      Frame rate : 25.000 fps
      Language : English
   Audio #2
      Codec : AC3
      Codec/Info : Dolby AC3
      Channel(s) : 2 channels
      Sampling rate : 48 KHz
      Language : English
   Text #3
      Codec : UTF-8
      Codec/Info : UTF-8 Plain Text
      Language : English


thx

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#7 2008-09-07 00:26:10

gertsolo
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Re: mkv to avi

@ 96crypt_mod

You're right, it worked, but the audio is out of sync.
At the moment I'm using:

Avi as container
DivX (D50) as video codec
mp3 as audio codec
no video scale change
fps 25
Bitrate 8352

audio 48000, 128 kbps

any idea???

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