TMPEGENC: Mpeg1 in CQ, VBV Buffer size?

[D.D.G.]

Hello !

I try to create Mpeg1 video with TMPEGENC CQ rate control mode. This video would be authored on a DVD-R and played on a DVD Player. Do I need to change the VBV buffer size or leave it on 40kB. Is the VBV buffer size connected with frame size or bit rate?

Thanks, D.D.G.

[Olli]

set it to 0 (automatic mode)

[mb1]

If you want to strictly follow dvd specs then for mpeg1 you have to set:

- CBR
- 352x240 (NTSC) or 352x288 (PAL)
- Buffer size max. 327 689 bits (= 40 KB in Tmpeg)
- 4:3
- GOP max. 18 frames (NTSC) or 15 frames (PAL)
- Audio 48 kHz ac3 (NTSC, PAL) and 48 kHz mp2 (PAL) ...

regards
mb1

[D.D.G.]

Hello!

Thanks for your reply.

The Mpeg1 clip authorized to DVD-R was jerky, and then the DVD player stopped, even i strictly followed the VCD specs ( the automatic VBV setting was worse).
But i found out what satisfy my demand. I encoded the video in mpeg2 352x288 non-interlaced (Pal) CQ70, VBV 224kB and the result is very good. One DVD-R can hold up to 8-10 hours of video (for example archiving).

Regards, D.D.G.

[mb1]

But Mpeg2 with 352x288 is out of DVD specs ...

So you could have problems on other players ...

Edit:
No stop, it is inside specs, sorry.

But I would prefer at least 352x576 for better quality

regards
mb1