On Sat, 20 Dec 2003 [EMAIL PROTECTED] wrote:
> > > Ok. I noticed that for some chapters on the DVD, the average bitrate
> > > reported by mplex was almost 50% of the max bitrate! What does this
>
> Could you please comment on this? If the avg is 50% of the max, does it
> mean that I can afford
>From "Steven M. Schultz" <[EMAIL PROTECTED]> on 19 Dec 2003:
>
> On Fri, 19 Dec 2003 [EMAIL PROTECTED] wrote:
>
> > Ok. I noticed that for some chapters on the DVD, the average bitrate
> > reported by mplex was almost 50% of the max bitrate! What does this
> > mean?
Could you please comment o
On Fri, 19 Dec 2003, Matto Marjanovic wrote:
>
>
> [You can specify "-S mode=mono" to y4mscaler, and it will treat the source
> as a mono stream. Then, in addition to zeroing the output chroma channels,
> it will skip scaling them altogether.]
Cool!
I just killed the enc
[a footnote:]
...
> This particular movie is black and white so the chroma is killed with
> 'y4mshift -M' (sets U and V to 128).
...
>mpeg2dec -s -o pgmpipe foo.vob | \
> pgmtoy4m -i t -a 10:11 -r 3:1001 | \
> y4mshift -M | \
> y4mscaler -v 0 -S option=sinc:8 -O
On Fri, 19 Dec 2003 [EMAIL PROTECTED] wrote:
> Ok. I noticed that for some chapters on the DVD, the average bitrate
> reported by mplex was almost 50% of the max bitrate! What does this mean?
Ah, I see my posting made it out - I never saw it come around.
> > After discarding 80 to
>From "Steven M. Schultz" <[EMAIL PROTECTED]> on 18 Dec 2003:
> You set the maximum bitrate and then adjust -q so that the Average
> is ~10% lower than the Peak rate.
Ok. I noticed that for some chapters on the DVD, the average bitrate reported by mplex
was almost 50% of the max bit
On 19 Dec 2003, Florin Andrei wrote:
> You mean that for whole movies (> 1 hour) or for smaller scenes?
For the movie as a whole. Shorter scenes will, as you have seen,
run up against the limit and there's nothing "wrong" about that.
The guidline often is given as 20%
On Thu, 2003-12-18 at 20:23, Steven M. Schultz wrote:
> You can set the bitrate to 9000 kbits/sec but with a high '-q' the
> encoder will only use a fraction of the maximum bitrate. Lower -q
> and watch the encoder come closer to the maximum rate.
> You set the maximum bitrate and then adjust -q
On Thu, 18 Dec 2003 [EMAIL PROTECTED] wrote:
> In trying to make a VBR MPEG1, there is a tradeoff between higher
> filesize/bitrate vs. quality.
That's always true - it's not VCD specific (and it sounds like you
are creating a XVCD).
> To get the same visual quality (i.