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Quim

Watchpax 2 and HAP

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Hi,

 

I have a project where we are going to use a Watchpax 2 for a 2 projectors blending screen. Our idea was to do a only one 3552x1080 px video in HAP. Do you know if it will work or we should pre-split it?

 

Thank you.

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Hi Quim,

 

I would at least try it using chunks since the cpu inside Watchpax 2 is not the strongest and chunks would make use of more than one core.

 

Keep the data size and size of ssd in mind!

 

If you have a sample file I could maybe try it on our Watchpax 2 for you - depending on my availability in the office. Contact me off forum for this.

 

Best Regards,

 

Rainer

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A video of such size will consume about 40 MB / s (megabytes, not megabit) for Hap at 30 fps, and around 80 MB / s for HapQ at 30 fps. For 60 fps you will have to double the numbers, approximately. This should not be a problem for a WP2 to handle, but I would recommend using 2 or 4 chunks when encoding, if possible. It might run without using chunks. 

Be aware though that the disk will fill up quite quickly. HapQ at 30 fps will need somewhere around 4.5-5 GB per minute, meaning that a 10 minute movie will more or less fill up the disk. 

 

/Erik 

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A video of such size will consume about 40 MB / s (megabytes, not megabit) for Hap at 30 fps, and around 80 MB / s for HapQ at 30 fps. For 60 fps you will have to double the numbers, approximately. This should not be a problem for a WP2 to handle, but I would recommend using 2 or 4 chunks when encoding, if possible. It might run without using chunks. 

Be aware though that the disk will fill up quite quickly. HapQ at 30 fps will need somewhere around 4.5-5 GB per minute, meaning that a 10 minute movie will more or less fill up the disk. 

 

/Erik 

Thank you Erik,

 

I will take the size in consideration. What about using presplit H264 or MPG2?

 

Regards.

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Hi Quim,

 

I would at least try it using chunks since the cpu inside Watchpax 2 is not the strongest and chunks would make use of more than one core.

 

Keep the data size and size of ssd in mind!

 

If you have a sample file I could maybe try it on our Watchpax 2 for you - depending on my availability in the office. Contact me off forum for this.

 

Best Regards,

 

Rainer

Thank you Rainer,

 

I will when I had more info about length and final size for the video.

 

Best regards,

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Hi Quim,

 

Pre-split always has the problem that you need to be sure about the real overlap on site. According to my latest experiences MPEG-2 will work better than H.264. Another option might be WMV.

 

A client has an installation with WATCHPAX 2 driving two 1920x1080 monitors each and he used the following settings:

 

*** Video Track Parameters ***

- Format: Windows Media Video 9 (VC1) Advanced Profile
- Size: 1.11 GiB
- FourCC: WVC1
- Track number(s): 2
- Bitrate: Max.: ---
   Average: 50.0 Mbps
   Min.: ---
   Average: 25.000
- Bitrate mode: Constant
- Encoding profile: Advanced@L3
- Width (Pixel number): 1920
- Height (Pixel number): 1080
- Display Aspect Ratio: 16:9
- Chroma subsampling format: YUV 4:2:0
- Interlacing: Progressive
- Additional Parameters: Bits/(Pixel*Frame) ratio: 0.965
 
This works ok.
 
Best Regards,
 
Rainer

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Hi,

 

I have a project where we are going to use a Watchpax 2 for a 2 projectors blending screen. Our idea was to do a only one 3552x1080 px video in HAP. Do you know if it will work or we should pre-split it?

 

Thank you.

Hi Quin, I have similar setup with WATCHPAX 2 recently to run a 3840 x1200px HAP video (around 2mins, 9GB) , and I tried 4 chunks and no chunks, both are running smooth with WATHCPAX 2.

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