# Questions about video streaming...

Source: https://forum.modalai.com/topic/1335/questions-about-video-streaming
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2022-09-14 18:21:09 UTC by Ed Sutter
Replies: 5 · Views: 681

## Ed Sutter · 2022-09-14 18:21:09 UTC

I am working with VOXL1 Flight Deck.  
The [VOXL Streamer documentation](https://docs.modalai.com/voxl-streamer/)  says I can use hardware acceleration to encode multiple h264 streams simultaneously.  Is there a maximum?
Is HW acceleration used regardless of the interface? If I have a USB camera (using voxl-uvc-server) will voxl-streamer still use hardware acceleration?
Tx

## Reply by Eric Katzfey (ModalAI staff) · 2022-09-14 21:30:13 UTC

@Ed-Sutter Yes, voxl-streamer will always use HW acceleration for h264 encoding. There is a limit but I'm not sure what it is. I have streamed multiple cameras in the past and it was able to keep up just fine but I don't have any actual spec numbers on that. It is a pretty powerful hardware accelerator.

## Reply by Ed Sutter · 2022-09-15 21:12:35 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Ok, I don't know what we need yet, but I'm gonna see if I can run all 5 cameras with HW-accelerated H264...  I'll post results.
Different question... I am trying to build voxl-camera-server, so far without success.  Referring to install_build_deps.sh, I've tried both 
**./install_build_deps.sh apq8096 sdk-1.0**
and
**./install_build_deps.sh apq8096 dev**
Which is preferred (or is there a different) option?  Which is the "stable" version?

## Reply by Ed Sutter · 2022-09-16 11:48:22 UTC (in reply to Eric Katzfey)

@Eric-Katzfey One more question to add to the last reply...
I just noticed that there is an apq8096-camera-server repository.  What is the difference between that and voxl-camera-server?

## Reply by Ed Sutter · 2022-09-16 14:25:31 UTC (in reply to Eric Katzfey)

@Eric-Katzfey I started a new [thread](https://forum.modalai.com/topic/1347/build-questions) for these last few build questions.

## Reply by Eric Katzfey (ModalAI staff) · 2022-09-16 15:17:11 UTC (in reply to Ed Sutter)

@Ed-Sutter Thanks! Always better to start a new thread for a different question.