FF HTML5 video contrast issues

[Aaron F. Ross]

Hi,

Not sure if this is the place to post this or not. If not, please point me in the right direction.

I was very excited to see that I can post video to my web page without plugins, Flash, or Javascript. However, I have identified two issues concerning visual quality in the Firefox HTML5 video player. I'm an artist, image is everything to me.

1. Poster image is at reduced contrast. Looks like it's viewed through some kind of filter. This is bad. Please don't do this. If I create a poster image, I expect that it will be displayed the same way I created it. This is not an unreasonable expectation.

2. MP4 video is being displayed at reduced contrast as well. Blacks are not black, whites are not white. This probably has something to do with a dynamic range mismatch between 0-255 (for display/desktop) and 16-235 (for storage/broadcast). My files are encoded with Handbrake. I assume what is happening is that the encoder is using the standard 16-235 range, but Firefox is not correctly expanding that out to 0-255. This is bad. Please fix it.

I understand that this is an "emerging" technology, but it's just as easy to get these things right.

Thank you

Aaron

[Scott Downe]

Yeah, this is probably not the place. You probably want to be letting the
browser developers know.

I believe with mp4 firefox is just using software on the operating system
to play the video. I'm not sure on details, but previously Firefox couldn't
play an mp4 at all.

Have you tried comparing an ogv or webm to mp4? They are played directly by
the browser and my have better results?

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