Re: How to convert a JPEG image to an I-frame?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

Klaus Schmidinger schrieb:

> Looks like it is the file size.
> I have now changed the line
> 
>   mpeg2enc -f 7 -T 90 -F 3 -np -a 2 -v 0 -o "$TMP2"
> 
> to
> 
>   mpeg2enc -f 7 -T 40 -F 3 -np -a 2 -v 0 -o "$TMP2"
> 
> so that the resulting file is about the same size as yours, and now
> my images also are smooth. However, this most likely means that the
> picture resolution is now reduced.
> 
> Maybe sending a large I-frame continuously causes trouble in the FF DVB cards.
> 
> Is there a way to generate a sequence of one (large) I-frame, followed
> by some number of P-frames, which indicate that there is no change in
> the image data? Like creating an MPEG sequence from a set of still
> images, where all stills are the same.

Hhm, if you set -n 3 for ppmtoy4m, mpeg2enc should detect, that there
are no changes.

Bye.
-- 
Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl@xxxxxx

_______________________________________________
vdr mailing list
vdr@xxxxxxxxxxx
http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr

[Index of Archives]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Util Linux NG]     [Xfree86]     [Big List of Linux Books]     [Fedora Users]     [Fedora Women]     [ALSA Devel]     [Linux USB]

  Powered by Linux