# Does new trancoder use vbv encoding?

**URL:** <https://forums.plex.tv/t/does-new-trancoder-use-vbv-encoding/31930>\
**Category:** Dev/API Corner\
**Tags:** other-dev\
**Created:** [April 1, 2013, 4:15pm UTC](https://forums.plex.tv/t/does-new-trancoder-use-vbv-encoding/31930 "2013-04-01T16:15:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jkiel](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/jkiel/32/4301_2.png) [@jkiel](https://forums.plex.tv/u/jkiel)\
**Post date:** [April 1, 2013, 4:15pm UTC](https://forums.plex.tv/t/does-new-trancoder-use-vbv-encoding/31930/1 "2013-04-01T16:15:18Z")

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When I first started using the new transcoder for plex with Roku, the increased buffering time for remote clients got me thinking that plex started using[VBV encoding](http://mewiki.project357.com/wiki/X264_Encoding_Suggestions#VBV_Encoding)&nbsp;with CRF rather than CBR to help increase quality in bandwidth constrained&nbsp;environments, requiring the client to download (vbv-init \* vbv-bufsize) \* (vbv-maxrate / [actual client bitrate]) before playing&nbsp;the stream. &nbsp;However, the more I look at the quality of the stream, I'm starting to think my initial impression could have been wrong.

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Does the new transcoder use vbv&nbsp;encoding?&nbsp;&nbsp;If not, why not? &nbsp;If so, out of&nbsp;curiosity,&nbsp;what are your&nbsp;vbv-bufsize settings for 1.5mbps and 720kbps streams when transcoding for roku and android?

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [December 20, 2019, 11:09pm UTC](https://forums.plex.tv/t/does-new-trancoder-use-vbv-encoding/31930/2 "2019-12-20T23:09:02Z")

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