Re: [Ffmpeg-devel] Bug? Flash 2 pass encoding breaks after 10 seconds

[Robert Zufall]

> > I try to encode Flashvideo (FLV). it work for the first pass, but the 2nd pass is strange:
> > after 10 seconds in the video the quality is the same as in the first pass.
> > 
> > Examples (I would like to upload samples via ftp like it says on the page "Reporting a Bug To The FFmpeg Project" but the ftp-server ist not anonymous...)
> 
> it is

My FTP-client (total commander) asked me for a username and password. other anonymous ftp-servers don't do that...


> > http://www.thirdrail.de/pi-1pass.flv
> > http://www.thirdrail.de/pi-2pass.flv
> > http://www.thirdrail.de/log_file-0.log
> > 
> > look at the very start at the small letters and you can see a great quality difference, but after 10 seconds everthing is the same.
> > 
> > can anybody help me please?
> 
> 1. use higher bitrate
> 2. finetune encoding options (something like -mbd 2 -g 300 -flags trell+mv4
>    -cmp satd -subcmp satd)

Hi Michael,

thx for the tips. I'd really like to finetune options, but where can I get more documentation on those? 
The official "FFmpeg Documentation - Table of Contents" doesn't even list any of 
"-flags", "trell" "-cmp" and "-subcmp"...

And I did not thought about a higher bitrate could help an encoding-feature that works for 10 seconds and than stops?...

More hints would be helpfull - any tutorials or manpages I could read to get more understanding for this?


Thanks for your time.

Rob

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