Comments for A Dolphin's Journal of Events

Comment on WebM+ffmpeg Win32 Build by Sergey

Sergey — Sun, 25 Jul 2010 19:50:19 +0000

Does not compile. Lay out, who could compile, fresh build. libvpx 9.1

Comment on WebM+ffmpeg Win32 Build by Selur

Selur — Sun, 04 Jul 2010 10:37:22 +0000

started a ffmpeg ivfenc mapping spreadsheet a few days ago, for those interested see (and edit if you want):
http://spreadsheets.google.com/ccc?key=0AvWxUS1XGCPAdGNtNW10a2p4c1VwdG1VZk1uMl9MUEE&hl=en

Comment on WebM+ffmpeg Win32 Build by Sergey

Sergey — Mon, 21 Jun 2010 07:26:33 +0000

The big request to compile r4 as on the basis of a script most it it was not possible to make.

Comment on WebM+ffmpeg Win32 Build by Sergey

Sergey — Mon, 21 Jun 2010 07:22:11 +0000

“FFmpeg has integrated libvpx decoding and encoding support into the source tree…”

The cleverest?

-level -lag etc. are not supported. It is possible to consider that libvpx there is not present.

Comment on WebM+ffmpeg Win32 Build by Sergey

Sergey — Fri, 18 Jun 2010 22:49:13 +0000

mplayer-vp8-encdec-support-r4.tar.bz2 MPlayer/FFmpeg VP8 encode/decode patches – using libvpx.git@6cd4a10 or later (includes 0.9.1)

ffmpeg+webm mingw32 build r4?

Comment on WebM+ffmpeg Win32 Build by Conan Kudo (ニール・ゴンパ)

Conan Kudo (ニール・ゴンパ) — Tue, 08 Jun 2010 09:57:07 +0000

FFmpeg has integrated libvpx decoding and encoding support into the source tree…

Comment on WebM+ffmpeg Win32 Build by Gregory Maxwell

Gregory Maxwell — Tue, 01 Jun 2010 06:29:43 +0000

What problem are you having building Vorbis? It should build in mingw with _zero problems_. You need to also compile libogg.

Everyone in the vorbis using world is really eager to get people to not us the ffmpeg vorbis encoder, it really is very poor. If you’d like some help you can join the #vorbis channel on irc.freenode.org (http://webchat.freenode.net/) or hit-up the vorbis mailing lists and many people will be glad to help you get it working.

Comment on WebM+ffmpeg Win32 Build by Ricardo

Ricardo — Sat, 29 May 2010 23:55:17 +0000

anyone having oversized problems with webm? I also noticed that if i select 450k as video bitrate mediainfo reports the videobitrate as 563k, i think thats why im getting oversized files compared with h264 with same bitrate.

i tried WMV, H264 (x264) and theora with same bitrate and they all have almost identical sizes, with webm they’re bigger, for example with wmv, x264 and theora i get 2,9MB with WebM i get 3,8MB

I wanted to test the format agains the others but im not sure if ffmpeg is pumping up the bitrate or is it mediainfo not reporting the bitrate properly, the bitrate of the mkv file before and after processing it with mkclean to get a webm file is the same.

to get 450k as video bitrate in (mediainfo) i had to setup ffmpeg with 225K (half of 450), the size is now identical to the other formats

Anyone?

Comment on WebM+ffmpeg Win32 Build by Ramiro Polla

Ramiro Polla — Fri, 28 May 2010 02:19:57 +0000

@Marco Ravich
There is currently a bug in FFmpeg with win64: https://roundup.ffmpeg.org/issue1889
I don’t think the link will work right now since the roundup interface is down though.

Besides that, I will provide Windows FFmpeg builds with libvpx on the autobuilds website ( http://ffmpeg.arrozcru.org/autobuilds ) as soon as it is integrated into FFmpeg SVN. Currently only decoding is integrated IIRC.

Comment on WebM+ffmpeg Win32 Build by Ricardo

Ricardo — Thu, 27 May 2010 20:17:15 +0000

Hi Leon, at the webm blog you answered me that you replace the audio (remux).

Ive tried some examples but im unable to replace the audio track with ffmpeg, i managed but the audio only plays for 4 seconds.

Can you share what you have done?

Thanks