I suppose that would be an easy way to explain it.
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| changing (ivtv) variables in the PVR-150 card? http://forum.linhes.org/viewtopic.php?f=17&t=19823 |
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| Author: | neutron68 [ Mon Apr 27, 2009 2:04 pm ] |
| Post subject: | changing (ivtv) variables in the PVR-150 card? |
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 $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null
Or, is there a better place/file to make this change? Eric |
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| Author: | cecil [ Mon May 04, 2009 1:13 am ] |
| Post subject: | |
What are you trying/want to do w/ the changes? You could put it in ~/.fluxbox/apps. That way it makes the changes you want when Fluxbox is started. |
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| Author: | neutron68 [ Mon May 04, 2009 12:46 pm ] |
| Post subject: | video variables - goal |
cecil wrote: What are you trying/want to do w/ the changes? You could put it in ~/.fluxbox/apps. That way it makes the changes you want when Fluxbox is started.
My goal is to be able to tweak those video variables in the PVR-150 card. That temporal filtering creates a smearing effect I can detect in my PVR-150 recordings, so I really want it turned off (set to zero). When the value is above zero, the picture detail is reduced by the smearing effect. My goal is to see/record as much detail as possible. I see that ~/.fluxbox/apps is a text file that resides in a user's /home directory. Which user's apps file would I use? The mythtv user or root? Would I just insert the video command line into that file and it will auto execute? Like this? Code: #[startup] {xscreensaver}
[startup] {xset -dpms s off} [startup] {/usr/bin/x11vnc -nap -wait 50 -passwd mythtv -display :0 -forever -o$ [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 |
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| Author: | cecil [ Mon May 04, 2009 5:34 pm ] |
| Post subject: | |
Code: [startup] {/usr/local/bin/v4l2-ctl $CTL_OPTS --set-ctrl temporal_filter=0 >/dev/null} Add that before KnoppMyth-run.
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| Author: | neutron68 [ Mon May 04, 2009 8:17 pm ] |
| Post subject: | thanks |
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 |
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| Author: | cecil [ Tue May 05, 2009 9:17 pm ] |
| Post subject: | |
I suppose that would be an easy way to explain it.
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