The VideoLAN Forums

Posted: **13 Jan 2009 20:16**

Hi there, I searched this forum and it seems like changing dvb-t for atsc in the mrl should work for tuning ATSC.
In fact my WinTV-HVR 950 seems to be recognized by VLC with the change above but I'm still unable to tune as the following log shows:

Code: Select all

qt4 debug: New item: atsc://
qt4 debug: New Option: :dvb-frequency=647028
qt4 debug: New Option: :dvb-bandwidth=-1
main debug: adding item `atsc://' ( atsc:// )
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 5 items, index 3
main debug: starting new item
main debug: processing request item atsc:// node Playlist skip 0
main debug: resyncing on atsc://
main debug: atsc:// is at 4
main debug: creating new input thread
main debug: Creating an input for 'atsc://'
main debug: waiting for thread initialization
main debug: thread started
main debug: thread 6476 (input) created at priority 1 (input/input.c:370)
main debug: `atsc://' gives access `atsc' demux `' path `'
main debug: creating demux: access='atsc' demux='' path=''
main debug: looking for access_demux module: 0 candidates
main warning: no access_demux module matched "atsc"
main debug: TIMER module_Need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'atsc' path=''
main debug: looking for access module: 1 candidate
bda debug: FindFilter: Connected WinTV HVR-980 BDA Tuner
bda debug: FindFilter: Connected WinTV HVR-980 BDA Capture
qt4 debug: Updating the stream status: 3
bda debug: FindFilter: Connected BDA MPEG2 Transport Information Filter
bda debug: Register: registered Graph: VLC BDA Graph 00db4b70 Pid 000017f0
main debug: using access module "bda"
main debug: TIMER module_Need() : 5120.000 ms - Total 5120.000 ms / 1 intvls (Avg 5120.000 ms)
qt4 debug: New Event: type 1103
qt4 debug: Updating the stream status: 2
main debug: Using AStream*Block
main debug: pre buffering
bda warning: BDA GetBufferSize: Timed Out waiting for sample
main error: cannot pre fill buffer
main warning: cannot create a stream_t from access
main debug: finished input
main debug: dying input
qt4 debug: Updating the stream status: 8
main debug: dying input
main debug: dying input
main debug: dying input
main debug: dying input
main debug: dying input
main debug: removing module "bda"
main debug: thread ended
main debug: dead input
main debug: thread times: real 0m7.546875s, kernel 0m0.453125s, user 0m0.000000s
main debug: thread 6476 joined (playlist/engine.c:244)
main debug: TIMER input launching for 'atsc://' : 7579.000 ms - Total 7579.000 ms / 1 intvls (Avg 7579.000 ms)
main debug: starting new item
main debug: changing item without a request (current 4/5)
main debug: nothing to play

I tried three different channels available in my area both in Hz and in kHz with a similar error log. Also, I set bandwidth to 6 MHz with the same results.

I'm using VLC 0.9.8a

Am I missing additional parameters?
Should I enter the channel frequency in kHz?
Is bandwidth parameter required for ATSC?

Thanks for adding DVB/ATSC support to VLC!

Posted: **13 Jan 2009 22:21**

atsc is disabled in vlc 0.9.8 but is now working in vlc 1.0
try using a nightly build

Posted: **14 Jan 2009 00:13**

It seems it's not enabled completely. This is with 1.0.0-git-20090113-005:

Code: Select all

main debug: adding item `atsc://' ( atsc:// )
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 3 items, index 1
main debug: processing request item atsc:// node Playlist skip 0
main debug: resyncing on atsc://
main debug: atsc:// is at 2
main debug: starting new item
main debug: creating new input thread
main debug: Creating an input for 'atsc://'
qt4 debug: Adding a new MRL to recent ones: :dvb-frequency=647028
main debug: thread started
main debug: using timeshift granularity of 52428800 bytes
main debug: using timeshift  path 'C:\DOCUME~1\CJROMA~1\LOCALS~1\Temp'
main debug: `atsc://' gives access `atsc' demux `' path `'
main debug: creating demux: access='atsc' demux='' path=''
main debug: looking for access_demux module: 0 candidates
main debug: no access_demux module matched "atsc"
main debug: TIMER module_need() : 0.000 ms - Total 0.000 ms / 1 intvls (Avg 0.000 ms)
main debug: creating access 'atsc' path=''
main debug: looking for access module: 1 candidate
main debug: thread (input) created at priority 1 (input/input.c:368)
bda debug: CreateTuneRequest: Using Tuning Space: ATSC
bda debug: Build: Using Tuning Space ID 3
qt4 debug: IM: Setting an input
bda debug: Queue sample size = 0
bda debug: Queue buffer size = 0
bda debug: FindFilter: Connected WinTV HVR-980 BDA Tuner
bda debug: BDAGraph: Using adapter 0
bda debug: FindFilter: Connected WinTV HVR-980 BDA Capture
bda warning: Build: Cannot connect Sample Grabber to Capture device: hr=0x4f975e080004005
bda warning: SubmitATSCTuneRequest: Cannot Build the Graph: hr=0x487ab1880004005
bda warning: DVB_Open: Unsupported Network atsc
main warning: no access module matching "atsc" could be loaded
main debug: TIMER module_need() : 30.000 ms - Total 30.000 ms / 1 intvls (Avg 30.000 ms)
main error: open of `atsc://' failed: <NULL>
main debug: finished input
main debug: dead input
main debug: thread ended
main debug: thread times: real 0m0.031250s, kernel 0m0.015625s, user 0m0.015625s
main debug: changing item without a request (current 2/3)
main debug: nothing to play
qt4 debug: Destroy the Interaction Dialog
qt4 debug: Hide the Interaction Dialog
qt4 debug: IM: Deleting the input
main debug: Destroying the input for 'atsc://'
main debug: TIMER input launching for 'atsc://' : 69.000 ms - Total 69.000 ms / 1 intvls (Avg 69.000 ms)

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