H264 to XVID

[haggen]

Hi, well i finally have my h264 avi from a MKV.

I need to convert this h264 to XVID, virtualdubb wont let me open or reencode the video because i dont have the apropiate codec installed.

VirtualDub gives me this error:

"Couldn't locate decompressor for format 'h264' (unkown)"

On virtualdubmod i can open the video, the same error jumps but i can open it, but i can only use "Direct Stream Copy" on the video menu.

Any ideas?
Thanks

[Baldrick]

try ffdshow and be sure to enable h264 vfw decoding under vfw decoding options->decoder->codecs->h264->libavcodec

[haggen]

Great! i can open the file with no problems at all.

Now.. to be honest i have never encode with XVID, can some one point me to a good tutorial for xvid encoding? my original video file is beatufull (HQ) i wouldnt want lose any quality.

I found some guides here.. but only with 1 pass encoding.. ive heard that is better to use 2 pass right? any comments on this?

Thanks

[Stormin Norman]

Try these.

https://www.videohelp.com/guides.php?tools=&madeby=&formatconversionselect=AVI+to+XviD&...or+List+Guides

[junkmalle]

I found some guides here.. but only with 1 pass encoding.. ive heard that is better to use 2 pass right?

No, use Single Pass, Quantizer mode (constant quality), with a quantizer value of 2 or 3. The lower the quantizer value, the higher the quality.

[celtic_druid]

Expect filesize to increase by a fair bit.
Hopefully after this weekend XviD will have a few different quality presets in the GUI. Should make things easier.

[Jean]

try ffdshow and be sure to enable h264 vfw decoding under vfw decoding options->decoder->codecs->h264->libavcodec

Hi,

I installed ffdshow, but still got the message
"Couldn't locate decompressor for format 'h264' (unkown)"
when trying to open the *avi file with VirturldubMod.

I can't find "options->decoder->codecs-.." you mentioned. Please help.

Thanks,
Jean.

[jagabo]

Start -> All Programs -> ffdshow -> VFW codec configuration.

[Jean]

Start -> All Programs -> ffdshow -> VFW codec configuration.

Jagabo,
Thank you. Found it.

I'm trying to convert H264 to either Div or Xvid so that it can be played on standalone DVD player. Any suggestions on which format (Divx or Xvid) is better in terms of conserve the video quality?

I tried to set the same video bit rate in VirtualdubMod as the origianl H.264 one. However, it seems never work correctly. Here is what I did: video->compression->Xvid->config-> set "target bitrate"=the video bitrate in the original H.264 avi file. The converted avi has always lower bitrate than the original one-- sometime it is off quite bit.

Thank you.
Jean

[jagabo]

Some people have a strong preference for one or the other (Xvid of Divx). I think Xvid is better but the differences are all the big.

H.264 compresses video better than Xvid or Divx. You will have to use a higher bitrate to get the same quality. Xvid may be missing your requested bitrate because the quantizer limit settings on the Xvid Configuration -> Advanced -> Quantization page. All the minimums should be set to 1, the maximums to 31. Other than that -- there were some old releases which didn't hit the requested bitrate very well.

If you don't need files of a specific size you should just use single pass target quantizer mode mode. A quantizer of 2 will give you a result that is nearly indistinguishable from your source. At three there will be a little macroblocking if you look closely at still frames (you won't notice at normal playback speeds). Higher values will give progressively lower picture quality and smaller file sizes.

[ross_diadame]

try ffdshow and be sure to enable h264 vfw decoding under vfw decoding options->decoder->codecs->h264->libavcodec

i have this:
Ghost_in_the_Shell_Stand_Alone_Complex_Solid_State _Society(H264.MP3).mkv

i would like to convert h264 to xvid but it says:
"Couldn't locate decompressor for format 'ÿÿÿÿ' (unkown)"
Only Direct Stream Copy.......

i installed ffdshow and enabled h264 but i still receive the warning above...

please help.

You are in breach of the forum rules and are being issued with a formal warning. Buy Ghost on DVD. Don't dig up 3 year old topics. Convert mkv to avi xvid with alltoavi.
/ Moderator Baldrick