[FFmpeg-user] Problems with IE9

Lou lou at lrcd.com
Wed Nov 23 18:42:08 CET 2011

On Wed, 23 Nov 2011 09:19:59 -0800 (PST)
Tim Gustafson <tjg at soe.ucsc.edu> wrote:

> Hi,
> I've got a video service that's been up and running for a while that
> uses FFMPEG to convert all its videos.  It works very well, except in
> IE9 (of course).
> Here's a link to the video player page:
> http://slugtube.soe.ucsc.edu/slugtube/video/1321566272
> I default to using HTML5 video (with MP4 and WEBM versions of each
> file), if available, and then fall back to a flash player if that
> doesn't work.  Here are the command lines that I use to create the
> MP4 video:
> ffmpeg -y -i source.video -f mp4 -threads 4 -vcodec libx264 -vpre
> libx264-lossless_slow -b 768K -acodec libfaac -ar 22050 -r 30 -g 150
> -s 800x600 ideo.mp4

Are you absolutely sure you want or need lossless? I'm assuming you
probably want to use the "slow" preset instead since you are attempting
to apply the -b option which is probably ignored with lossless presets.

> It would appear that IE9 is attempting to use the MP4 video, but it
> chokes on it.  The player controls show up for a minute and then go
> away and don't come back, and even if you right-click the video and
> hit "play", it does not play.  Is there some better options that I
> should be choosing for MP4 video to work properly in IE9?
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> Tim Gustafson
> tjg at soe.ucsc.edu Baskin School of
> Engineering                                     831-459-5354 UC Santa
> Cruz                                         Baskin Engineering 317B
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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