# Hardware acceleration for mapillary\_tools
**URL:** https://forum.mapillary.com/t/hardware-acceleration-for-mapillary-tools/3678
**Category:** Command line tools
**Created:** [January 3, 2020, 8:04pm UTC](https://forum.mapillary.com/t/hardware-acceleration-for-mapillary-tools/3678 "2020-01-03T20:04:36Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@jpennycook](https://forum.mapillary.com/u/jpennycook)
#### Post date: [January 3, 2020, 8:04pm UTC](https://forum.mapillary.com/t/hardware-acceleration-for-mapillary-tools/3678/1 "2020-01-03T20:04:36Z")
When I use **mapillary\_tools video\_process** , **ffmpeg** uses up a signifcant amount of my CPU. This is expected, but it doesn’t consume any of my GPU. Can an option to use hardware acceleration be added to a future version of mapillary\_tools - i.e. add **-hwaccel** when calling **ffmpeg**?
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### Author:  [@bob3bob3](https://forum.mapillary.com/u/bob3bob3)
#### Post date: [December 23, 2020, 2:24pm UTC](https://forum.mapillary.com/t/hardware-acceleration-for-mapillary-tools/3678/2 "2020-12-23T14:24:08Z")
If you wish to change the ffmpeg command;
lib/python2.7/site-packages/mapillary\_tools/process\_video.py - around line 114
```
command = [
'ffmpeg',
'-hwaccel xxxxx' ,
'-i', video_file,
'-loglevel', 'quiet',
```
xxxxx
]
AFAIK the -hwaccel option requires a device argument.
---
### Author:  [@jpennycook](https://forum.mapillary.com/u/jpennycook)
#### Post date: [December 23, 2020, 3:09pm UTC](https://forum.mapillary.com/t/hardware-acceleration-for-mapillary-tools/3678/3 "2020-12-23T15:09:31Z")
I think “-hwaccel auto” should do something (I think not specifying anything, i.e. just “-hwacel”, also has some effect), otherwise just pass a value from the command line used to call mapillary\_tools in the first place.