On Sun, 6 Nov 2005, Dik Takken wrote:
> > You need to scale to 720x480 if you're going to use 30000:1001
>
> format and now all is OK. I didn't really understand what kind of
> 'samplerate' mpeg2enc was complaining about. Maybe the error message could
Y Sample Rate (Msamples/sec)
In mpeg2enc/conform.cc there's a table "level_limits" (line 177)
which lists the max sample rate for the various levels of MPEG-2
encoders. Mpeg2enc is a [EMAIL PROTECTED] (MainLevel @ MainProfile)
encoder so
the entry "ML" applies.
The calculation/check is done on line 284:
/* Table 8-11 */
if (horizontal_size*vertical_size*frame_rate >
maxval->sample_rate)
> **ERROR: [mpeg2enc] frame resolution is greater than permitted for NTSC video
It't not "NTSC" as such but the level of the encoder. "HL" (High
Level) MPEG-2 (which can't go on a DVD ;)) would allow a higher
frame rate using the "PAL" frame size.
useful book to have around is "Video Demystified 4th Edition" by
Keith Jack (ISBN 0-7506-7822-4). On page 587 is the same table
you'll find in mpeg2enc/conform.cc
Glad you have it working.
Cheers,
Steven Schultz
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