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View Full Version : VRC buffer size to use for an MP3 player

nonoitall
23rd May 2008, 06:52
I'm using mencoder to encode some video to MPEG-2 for playing on Rockbox's Mpegplayer (on an MP3 player). Anyway, it's a two pass encode and I've set a maximum bitrate with vrc_maxrate, but now I'm required to provide a vrc_buf_size and I have no idea what a good size would be for this target. Any ideas? I don't even really understand what this option does.
unskinnyboy
24th May 2008, 05:03
From the documentation (http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-vcd-dvd.html), vrc_buf_size: 327 for VCD, 917 for SVCD, and 1835 for DVD.
nonoitall
24th May 2008, 11:26
What about Mpegplayer though? :p I understand there's probably not a documented size for that target, but can someone who knows more about it than I make an educated guess of what a good starting point might be?
nonoitall
27th May 2008, 01:39
Is VRC buffer size the same thing as VBV buffer size?
unskinnyboy
27th May 2008, 02:41
What about Mpegplayer though? :p I understand there's probably not a documented size for that target, but can someone who knows more about it than I make an educated guess of what a good starting point might be?It depends on what your player is capable of. Is it DVD compliant? If so, you should go with 1835. Check the manuals or call their tech support to know. I don't know your players' capabilities.
Is VRC buffer size the same thing as VBV buffer size?Yes.
nonoitall
27th May 2008, 03:50
My first move was to check over there but I didn't get much in the way of a response. There seems to be a lot more Googleable information about VBV than VRC though, so I'll try asking them with different terminology and do some research of my own if that doesn't turn up anything. Thanks!