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26th August 2009, 02:40 | #1 | Link |
Registered User
Join Date: Jun 2008
Posts: 5
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tmpgenc 2.5 plus does not encode at chosen VBR bitrate
Has anybody had this problem using tmpgenc 2.5:
You set the 2-pass VBR Average rate at a specific value, but the output .m2v is not encoded at that rate? Specifically, it is encoded at a lower rate/quality than specified, and the file size is less than expected? This happens intermittently on my XP x64 system -- I haven't detected a pattern yet. Has anybody else seen this?? |
28th August 2009, 00:36 | #2 | Link |
Derek Prestegard IRL
Join Date: Nov 2003
Location: Los Angeles
Posts: 5,997
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Dunno... TMPGEnc 2.5 is _extremely_ old. It might have bizarre problems like this on newer systems. I'd say try out another MPEG-2 encoder, like HC or QuEnc.
~MiSfit
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28th August 2009, 13:04 | #3 | Link |
Registered User
Join Date: Mar 2002
Location: Krautland
Posts: 903
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Maybe the encoder gets saturated.
Out of curiosity: Lower the bitrate settings avr/max/min to same settings. For a test: 1500 kbits/sec And you will see TmpgEnc will hit the desired bitrate. Without knowing any of your sources/bitrate/resolution it's only guessing. Or maybe your settings are messed up. Different Quantize Matrix? etc..... Set everything to default, or delete the Tmpgenc.ini. Warning, this will zero any of your customations to default. Just verified my suggestions and Mediainfo shows exact numbers at lower bitrates 1500/2000 kbits/sec. But at 8000 kbits/sec encoder gets saturated to about 4500 kbits/sec at this source. This is on XP 32bit.... Hope this helps |
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average, bitrate, problem, tmpenc, vbr |
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