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playback 720p video in DM355 EVM/ THS8200 board

Grace
Prodigy 300 points
Other Parts Discussed in Thread: THS8200

Dear Champ,

I want to playback 720p video with DM355 EVM and display component output from THS8200 EVM.

I encounter 2 diffculty here :

1. I use decode demo in dvsdk (1.30.00.40) to decode a 720P video which I already converted to DM355 format , but not successful. I can convert a vga video (also converted to DM355 format. ) but not 720p.

How can I playback a HD video with DM355 EVM ?

My bootarg is

console=ttyS0,115200n8 noinitrd rw ip=$(ipaddr):::off  root=/dev/nfs nfsroot=$(serverip):/home/user/workdir/filesys,nolock mem=116M 

video=davincifb:vid0=1280x720x16,5529K:vid1=1280x720x16,5529K davinci_enc_mngr.ch0_output=COMPONENT1 davinci_enc_mngr.ch0_mode=720P-60

Should it be 720P_60 or 720P-60 ?

2. If I playback a vga video, I can get CLKIN (27Mhx) and Hsync (33Khz) and Vsync ( 65Hz ) and also some activity on the Y and C bus. So I think COMPONENT1 output is working and I can get digital output from EVM.

But how can  I setup davinci_enc_mngr.ch0_mode for vga resolution ?

Can I setup davinci_enc_mngr.ch0_mode=640*480 and still have COMPONENT1 as my output and get THS8200 board working to display vga video ?

OR if I use COMPONENT1, I can only use 720P or 1080i unless I modify the display driver files ?

Pls help. I've been working on this problem for quite some time and still get stuck here.

Definitely need some help. Thks.

 

 

 

 

 

  • TI__Mastermind 37340 points

    If I understand correctly, you are using dvsdk_1_30_00_40 (unmodified) and have a THS8200 card (from Spectrum Digital?). correct.

    If so, then I would suggest you refer to the PSP documentation under

    .../dvsdk_1_30_00_40/PSP_1_20_00_014/docs

    there, you will read that THS8200 does support 720p; however, asides from proper u-boot settings, you also need to enable things correcly in the Linux kernel (via menuconfig) as well as have the THS EVM; I believe THS8200 EVM  provides the clock for DM355 VPBE for the 720/1080i cases; therefore, if it is not connected, you will likely not see anything at VPBE.