[FFmpeg-user] h264 looks bad in Flash Player

Sven Dueking sven at nablet.com
Tue Apr 3 11:42:29 CEST 2012

-----Ursprüngliche Nachricht-----
Von: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org]
Im Auftrag von Carl Eugen Hoyos
Gesendet: Dienstag, 3. April 2012 10:13
An: ffmpeg-user at ffmpeg.org
Betreff: Re: [FFmpeg-user] h264 looks bad in Flash Player

wtfux <wtfux.dev <at> googlemail.com> writes:

> Example image: http://i.imgur.com/IRJdu.png (top: flash player (latest 
> version), bottom: VLC 2.0)

Is the problem also reproducible if you use x264 (the executable) instead of
FFmpeg? Did you try the reference decoder?

> Command: ffmpeg -i file.mp4 -codec:a libfaac -b:a 150k -codec:v
> libx264 -preset slow -profile:v high -tune:v animation -level:v 4.1 
> -refs:v 9 -crf:v 21 -threads 8 -f mp4 ~/test.mp4
> MediaInfo: http://pastebin.com/rRxtrQ5z

While I cannot comment on x264 encoding options, whoever can would probably
want to see the complete, uncut console output of above command.
(I don't remember a problem report where MediaInfo output was useful.)

Hi Carl, 

Just a guess, I remember an issue with a huge number of reference frames in
flash (and media info reports : ReFrames                : 9 frames)


Carl Eugen

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