View unanswered posts    View active topics

All times are UTC - 6 hours





Post new topic Reply to topic  [ 6 posts ] 
Print view Previous topic   Next topic  
Author Message
Search for:
PostPosted: Mon Apr 27, 2009 2:04 pm 
Offline
Joined: Tue Mar 28, 2006 8:26 pm
Posts: 804
Location: Minneapolis, MN
This question has come out of the discussion on page 3 of this thread:
http://mysettopbox.tv/phpBB2/viewtopic.php?t=16505
I suspect this deserves a new thread since it is about video and the referenced thread is about audio...

tjc wrote:
neutron68 wrote:
Does the PVR-150 have a SHARPNESS variable that can be set?

Not that I'm aware of. Possibly one of the filter options or decimation but you'll need to do your own research. Start with:
Code:
v4l2-ctl --help | more
v4l2-ctl --list-ctrls-menus | more

TJC,

Thanks for the suggestion. I'm still hunting for a way to change the various video variables in the PVR-150 card.

I see in my /var/log/mythtv/changer1.log file that there are MANY video settings that are mentioned. One I am particularly interested in changing is temporal_filter. That setting determines how much time-smear is added to your video recordings. The smear shows up as a trails behind a moving object. If you watch carefully, you will see them. On my machine temporal_filtering is getting set to an 8. I'd rather have it at a 0 or 1.

Here is a sample from my changer1.log file so you can see all the video variables that are there.
Code:
Called as: /usr/local/bin/change1.sh 355
Setting channel to 355
Called as: /usr/local/bin/delayed_settings.sh 1 128 0 64 64 52428
At: Wed Apr  8 21:54:40 CDT 2009

Settings before:

User Controls

                     brightness (int)  : min=0 max=255 step=1 default=128 value=128 flags=slider
                       contrast (int)  : min=0 max=127 step=1 default=64 value=63 flags=slider
                     saturation (int)  : min=0 max=127 step=1 default=64 value=63 flags=slider
                            hue (int)  : min=-128 max=127 step=1 default=0 value=0 flags=slider
                         volume (int)  : min=0 max=65535 step=655 default=58880 value=58880 flags=slider
                        balance (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                           bass (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                         treble (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                           mute (bool) : default=0 value=0

MPEG Encoder Controls

                    stream_type (menu) : min=0 max=5 default=0 value=0 flags=update
              stream_vbi_format (menu) : min=0 max=1 default=0 value=0
       audio_sampling_frequency (menu) : min=0 max=2 default=1 value=1
           audio_encoding_layer (menu) : min=1 max=1 default=1 value=1 flags=update
         audio_layer_ii_bitrate (menu) : min=9 max=13 default=10 value=12
              audio_stereo_mode (menu) : min=0 max=3 default=0 value=0 flags=update
    audio_stereo_mode_extension (menu) : min=0 max=3 default=0 value=0 flags=inactive
                 audio_emphasis (menu) : min=0 max=2 default=0 value=0
                      audio_crc (menu) : min=0 max=1 default=0 value=0
                     audio_mute (bool) : default=0 value=0
                 video_encoding (menu) : min=0 max=1 default=1 value=1 flags=readonly
                   video_aspect (menu) : min=0 max=3 default=1 value=1
                 video_b_frames (int)  : min=0 max=33 step=1 default=2 value=2 flags=update
                 video_gop_size (int)  : min=1 max=34 step=1 default=12 value=15
              video_gop_closure (bool) : default=1 value=1
             video_bitrate_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                  video_bitrate (int)  : min=0 max=27000000 step=1 default=6000000 value=4000000
             video_peak_bitrate (int)  : min=0 max=27000000 step=1 default=8000000 value=5500000
      video_temporal_decimation (int)  : min=0 max=255 step=1 default=0 value=0
                     video_mute (bool) : default=0 value=0
                 video_mute_yuv (int)  : min=0 max=16777215 step=1 default=32896 value=32896
            spatial_filter_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                 spatial_filter (int)  : min=0 max=15 step=1 default=0 value=0 flags=slider
       spatial_luma_filter_type (menu) : min=0 max=4 default=0 value=1
     spatial_chroma_filter_type (menu) : min=0 max=1 default=0 value=1
           temporal_filter_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                temporal_filter (int)  : min=0 max=31 step=1 default=0 value=8 flags=slider
             median_filter_type (menu) : min=0 max=4 default=0 value=0 flags=update
     median_luma_filter_minimum (int)  : min=0 max=255 step=1 default=0 value=0 flags=inactive slider
     median_luma_filter_maximum (int)  : min=0 max=255 step=1 default=255 value=255 flags=inactive slider
   median_chroma_filter_minimum (int)  : min=0 max=255 step=1 default=0 value=0 flags=inactive slider
   median_chroma_filter_maximum (int)  : min=0 max=255 step=1 default=255 value=255 flags=inactive slider
      insert_navigation_packets (bool) : default=0 value=0

Settings after:

User Controls

                     brightness (int)  : min=0 max=255 step=1 default=128 value=128 flags=slider
                       contrast (int)  : min=0 max=127 step=1 default=64 value=63 flags=slider
                     saturation (int)  : min=0 max=127 step=1 default=64 value=63 flags=slider
                            hue (int)  : min=-128 max=127 step=1 default=0 value=0 flags=slider
                         volume (int)  : min=0 max=65535 step=655 default=58880 value=58880 flags=slider
                        balance (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                           bass (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                         treble (int)  : min=0 max=65535 step=655 default=32768 value=32768 flags=slider
                           mute (bool) : default=0 value=0

MPEG Encoder Controls

                    stream_type (menu) : min=0 max=5 default=0 value=0 flags=update
              stream_vbi_format (menu) : min=0 max=1 default=0 value=0
       audio_sampling_frequency (menu) : min=0 max=2 default=1 value=1
           audio_encoding_layer (menu) : min=1 max=1 default=1 value=1 flags=update
         audio_layer_ii_bitrate (menu) : min=9 max=13 default=10 value=12
              audio_stereo_mode (menu) : min=0 max=3 default=0 value=0 flags=update
    audio_stereo_mode_extension (menu) : min=0 max=3 default=0 value=0 flags=inactive
                 audio_emphasis (menu) : min=0 max=2 default=0 value=0
                      audio_crc (menu) : min=0 max=1 default=0 value=0
                     audio_mute (bool) : default=0 value=0
                 video_encoding (menu) : min=0 max=1 default=1 value=1 flags=readonly
                   video_aspect (menu) : min=0 max=3 default=1 value=1
                 video_b_frames (int)  : min=0 max=33 step=1 default=2 value=2 flags=update
                 video_gop_size (int)  : min=1 max=34 step=1 default=12 value=15
              video_gop_closure (bool) : default=1 value=1
             video_bitrate_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                  video_bitrate (int)  : min=0 max=27000000 step=1 default=6000000 value=5000000
             video_peak_bitrate (int)  : min=0 max=27000000 step=1 default=8000000 value=7000000
      video_temporal_decimation (int)  : min=0 max=255 step=1 default=0 value=0
                     video_mute (bool) : default=0 value=0
                 video_mute_yuv (int)  : min=0 max=16777215 step=1 default=32896 value=32896
            spatial_filter_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                 spatial_filter (int)  : min=0 max=15 step=1 default=0 value=0 flags=slider
       spatial_luma_filter_type (menu) : min=0 max=4 default=0 value=1
     spatial_chroma_filter_type (menu) : min=0 max=1 default=0 value=1
           temporal_filter_mode (menu) : min=0 max=1 default=0 value=0 flags=update
                temporal_filter (int)  : min=0 max=31 step=1 default=0 value=8 flags=slider
             median_filter_type (menu) : min=0 max=4 default=0 value=0 flags=update
     median_luma_filter_minimum (int)  : min=0 max=255 step=1 default=0 value=0 flags=inactive slider
     median_luma_filter_maximum (int)  : min=0 max=255 step=1 default=255 value=255 flags=inactive slider
   median_chroma_filter_minimum (int)  : min=0 max=255 step=1 default=0 value=0 flags=inactive slider
   median_chroma_filter_maximum (int)  : min=0 max=255 step=1 default=255 value=255 flags=inactive slider
      insert_navigation_packets (bool) : default=0 value=0

I just found this page "http://ivtvdriver.org/index.php/V4l2-ctl_(Examples)"
Copy everything inside the quotes into your web browser address line.

It seems to show an example of giving a value to the temporal_filter variable.
Quote:
v4l2-ctl --set-ctrl temporal_filter=0 ( Picture ghosting problems )

Can we insert this command line into the delayed_settings.sh script and have this parameter set to our liking? Like this?
Code:
/usr/local/bin/v4l2-ctl $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null

Or, is there a better place/file to make this change?

Eric

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 04, 2009 1:13 am 
Offline
Site Admin
Joined: Fri Sep 19, 2003 6:37 pm
Posts: 2659
Location: Whittier, Ca
What are you trying/want to do w/ the changes? You could put it in ~/.fluxbox/apps. That way it makes the changes you want when Fluxbox is started.


Top
 Profile  
 
 Post subject: video variables - goal
PostPosted: Mon May 04, 2009 12:46 pm 
Offline
Joined: Tue Mar 28, 2006 8:26 pm
Posts: 804
Location: Minneapolis, MN
cecil wrote:
What are you trying/want to do w/ the changes? You could put it in ~/.fluxbox/apps. That way it makes the changes you want when Fluxbox is started.

My goal is to be able to tweak those video variables in the PVR-150 card. That temporal filtering creates a smearing effect I can detect in my PVR-150 recordings, so I really want it turned off (set to zero). When the value is above zero, the picture detail is reduced by the smearing effect. My goal is to see/record as much detail as possible.

I see that ~/.fluxbox/apps is a text file that resides in a user's /home directory.
Which user's apps file would I use? The mythtv user or root?

Would I just insert the video command line into that file and it will auto execute? Like this?
Code:
#[startup] {xscreensaver}
[startup] {xset -dpms s off}
[startup] {/usr/bin/x11vnc -nap -wait 50 -passwd mythtv -display :0 -forever -o$
[startup] {xvattr -a XV_COLORKEY -v 0}
[startup] {gnome-volume-manager}
[startup] {KnoppMyth-run}
[startup] {launch_irx.sh}
[app] (SDL_App)
  [Layer]       {2}
  [Deco]        {NONE}
[end]

/usr/local/bin/v4l2-ctl $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null

Eric

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner


Top
 Profile  
 
 Post subject:
PostPosted: Mon May 04, 2009 5:34 pm 
Offline
Site Admin
Joined: Fri Sep 19, 2003 6:37 pm
Posts: 2659
Location: Whittier, Ca
Code:
[startup] {/usr/local/bin/v4l2-ctl $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null}
Add that before KnoppMyth-run.


Top
 Profile  
 
 Post subject: thanks
PostPosted: Mon May 04, 2009 8:17 pm 
Offline
Joined: Tue Mar 28, 2006 8:26 pm
Posts: 804
Location: Minneapolis, MN
cecil wrote:
Code:
[startup] {/usr/local/bin/v4l2-ctl $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null}
Add that before KnoppMyth-run.

Thanks for the direction. I will do that.

Is the ~/.fluxbox/apps like an autoexec.bat file which is specific to the specific user?

Eric

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner


Top
 Profile  
 
 Post subject:
PostPosted: Tue May 05, 2009 9:17 pm 
Offline
Site Admin
Joined: Fri Sep 19, 2003 6:37 pm
Posts: 2659
Location: Whittier, Ca
I suppose that would be an easy way to explain it. :)


Top
 Profile  
 

Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 


All times are UTC - 6 hours




Who is online

Users browsing this forum: No registered users and 29 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group

Theme Created By ceyhansuyu