[FFmpeg-user] format for internet explorer post 8
thiles at confex.com
Sat Mar 28 23:57:12 CET 2015
> The input has no audio, and why suggest '-async 1'? Also, libx264
> ignores '-qscale', so the default of '-crf 23' will be used instead.
Thank you Lou. That helps me with a few things that I was unaware of.
That command is what I've typically used and have had good results with
playing mp4's in various browser players and hence why I suggested the user
try it. I know I'm not the end all be all of ffmpeg so I assumed others
would have other suggestions. I'll update it and compare and see if I see
different results. In regards to no audio present in the users question I
confess I didn't think to look.
A question then is raised for:
The actual solution is shown in the console output:
"No pixel format specified, yuv444p for H.264 encoding chosen.
> Use -pix_fmt yuv420p for compatibility with outdated media players."
> Of course, another solution is to use a more capable player.
Are you and ffmpeg suggesting that movflags faststart not be included in
the command, and that simply changing to -px_fmt yuv420p will play mp4
files better? Without the movflags faststart present I've seen certain
browsers balk at playing mp4s without it.
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