Constant Bitrate vs. Variable Bitrate

[Hardeep_S]

Please Help Me.

I want to knoe how to tell if an avi is variable bitrate or constant bitrate. I have virtualdub and gspot. Can someone please tell me how to check that.

[setarip]

If the audiostream is a CBR (Constant Bitrate) .MP3, its number of frames should be virtually identical to the number of audio samples. If it's VBR (Variable Bitrate) the number of frames may be as much as twice the number of video frames.

You may have to use a version of Virtual Dub prior to 1.5xx to see this type of information...

[Hardeep_S]

Some of the avi files have like audio samples in the 100 millions. What's up with those?

[setarip]

Once again:

You may have to use a version of Virtual Dub prior to 1.5xx to see this type of information...

(Audio stated as FRAMES, not SAMPLES)

[Hardeep_S]

Thank You I got that solved.

Another question.

I'm encoding a video in TMPG. THe avi file is 576x240. When you select your souce file, what should i chose for aspect ratio, 1:1 (VGA) or 16:9 525 line (NTSC). In the MPEG settings, for video arrange method i chose Full Screen (keep aspect ratio).

Which aspect ratio should i chose for my source file?

1:1 VGA or 16:9 525 line (ntsc)

ps.: I'm converting it over to SVCD.

[Hardeep_S]

What about avi's that are 640x272, 576x320, or 608x256

What should i choose the aspect ratio for the source file for them
converting them to SVCD and for video arrange method, choosing full screen (keep aspect ratio)

[Hardeep_S]

One more thing, my tv is fullscreen

[setarip]

"Thank You I got that solved."

My pleasure ;>}

[megamachine]

Regarding your second question, best bet is to use the SVCD template for your settings. Click Load on the lower right side and browse to the TMPGEnc folder to find the template for your TV system (i.e. PAL or NTSC). That will load the settings you need.

[divxdude]

the only two you should worry about are 4:3 and 16:9

4:3 = Full screen
16:9 = Wide Screen


Just choose the one that fits your video.