# BLFFileReader offset

**URL:** <https://forum.rtmaps.com/t/blffilereader-offset/130>\
**Category:** General\
**Created:** [November 19, 2024, 7:45am UTC](https://forum.rtmaps.com/t/blffilereader-offset/130 "2024-11-19T07:45:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![minco3](https://forum.rtmaps.com/user_avatar/forum.rtmaps.com/minco3/32/73_2.png) [@minco3](https://forum.rtmaps.com/u/minco3)\
**Post date:** [November 19, 2024, 7:45am UTC](https://forum.rtmaps.com/t/blffilereader-offset/130/1 "2024-11-19T07:45:32Z")

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Is there a way to offset the reading of the blf file? Ex: I’d like to start reading the blf from 1 minute after the beginning of the file. I tried changing the Engine.startTime which changed when my av\_source\_reader started reading from, but BLFFileReader doesnt seem to respect this setting. I thought maybe the BLFFileReader.offset property would do this but it only seems to offset the timestamps of the frames themselves?