[MPlayer-users] Green lines creep into b/w video

[Ken Bass]

On Sat, Sep 17, 2011 at 4:41 PM, Ron Johnson <ron.l.johnson at cox.net> wrote:

> On 09/17/2011 06:00 PM, Ken Bass wrote:
>
>> I have a DVD rip of an old movie (1935 "A Midsummer Night's Dream"). The
>> original movie was filmed in B/W.
>>
>> When I play the video, It starts fine, but horizontal green lines creep
>> in,
>> then after a few seconds, the image gets "reset" and the lines go away,
>> but
>> slowly start to creep back.Maybe something to do with interlacing and/or
>> syncing? I am no expert. so that is why I am asking this here :-).
>>
>> FWIW, I have read that when the film was transferred to DVD, they did
>> little, if any, restoration.
>>
>> Any ideas about this? In particular, how to get rid of these lines.
>>
>> Any help is greatly appreciated. This is a great classic, and I would love
>> to watch a clean version of it.
>>
>>
> What:
> 1) version of mplayer?
> 2) format and container is the movie?
> 3) happens when you play the movie with other programs?  vlc, totem...?
>
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In answer to the first two questions, here is the mplayer output (I ran this
via SMplayer):


 /usr/bin/mplayer -noquiet -nofs -nomouseinput -sub-fuzziness 1 -identify
> -slave -vo xv -ao pulse -nokeepaspect -framedrop -nodr -double -input
> nodefault-bindings:conf=/dev/null -stop-xscreensaver -wid 46137687
> -monitorpixelaspect 1 -ass -embeddedfonts -ass-line-spacing 0
> -ass-font-scale 1 -ass-styles /home/ken/.config/smplayer/styles.ass
> -fontconfig -font Arial -subfont-autoscale 0 -subfont-osd-scale 20
> -subfont-text-scale 20 -subcp ISO-8859-1 -subpos 100 -volume 7 -nocache
> -osdlevel 0 -nocorrect-pts -vf-add screenshot -slices -channels 2 -af
> scaletempo,equalizer=0:0:0:0:0:0:0:0:0:0 -softvol -softvol-max 110
> /mnt/3W/Video/mp3/A Midsummer Night's Dream 1935 DVDrip DixX.avi
>
> MPlayer SVN-r31628-4.4.4 (C) 2000-2010 MPlayer Team
>
> mplayer: could not connect to socket
>
> mplayer: No such file or directory
>
> Failed to open LIRC support. You will not be able to use your remote
> control.
>
> Playing /mnt/3W/Video/mp3/A Midsummer Night's Dream 1935 DVDrip DixX.avi.
>
> AVI file format detected.
>
> ID_VIDEO_ID=0
>
> [aviheader] Video stream found, -vid 0
>
> ID_AUDIO_ID=1
>
> [aviheader] Audio stream found, -aid 1
>
> VIDEO: [DX50] 352x240 24bpp 30.000 fps 945.5 kbps (115.4 kbyte/s)
>
> ID_FILENAME=/mnt/3W/Video/mp3/A Midsummer Night's Dream 1935 DVDrip
> DixX.avi
>
> ID_DEMUXER=avi
>
> ID_VIDEO_FORMAT=DX50
>
> ID_VIDEO_BITRATE=945496
>
> ID_VIDEO_WIDTH=352
>
> ID_VIDEO_HEIGHT=240
>
> ID_VIDEO_FPS=30.000
>
> ID_VIDEO_ASPECT=0.0000
>
> ID_AUDIO_FORMAT=85
>
> ID_AUDIO_BITRATE=128000
>
> ID_AUDIO_RATE=0
>
> ID_AUDIO_NCH=0
>
> ID_START_TIME=0.00
>
> ID_LENGTH=8584.37
>
> ID_SEEKABLE=1
>
> ID_CHAPTERS=0
>
> [ass] auto-open
>
> Opening video filter: [screenshot]
>
> [ass] Init
>
> [ass] Updating font cache
>
> ==========================================================================
>
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>
> Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
>
> ==========================================================================
>
> ID_VIDEO_CODEC=ffodivx
>
> ==========================================================================
>
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
>
> AUDIO: 48000 Hz, 2 ch, s16le, 128.0 kbit/8.33% (ratio: 16000->192000)
>
> ID_AUDIO_BITRATE=128000
>
> ID_AUDIO_RATE=48000
>
> ID_AUDIO_NCH=2
>
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
>
> ==========================================================================
>
> AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample)
>
> ID_AUDIO_CODEC=mp3
>
> [Mixer] No hardware mixing, inserting volume filter.
>
> Starting playback...
>
> Movie-Aspect is 1.47:1 - prescaling to correct movie aspect.
>
> ID_VIDEO_ASPECT=1.4667
>
> [swscaler @ 0x88653c0]using unscaled yuv420p -> rgb24 special converter
>
> VO: [xv] 352x240 => 352x240 Planar YV12
>
> ID_VIDEO_TRACK=0
>
> ID_AUDIO_TRACK=1
>
> Exiting... (Quit)
>
> ID_EXIT=QUIT
>

For #3, I get the same results from vlc and XBMC (which, I believe, uses
ffmpeg libraries).

I just played the video again, and noticed that in between the green lines
were several violet(?) lines as well. They all get brighter as the video
progresses, then disappear after about 10 seconds. Sometimes, if there is
movement in the video, the lines don't appear.

I would guess that the green (and violet) lines are actually a part of the
video itself, a remnant of a poor transfer from the film to DVD. I can pause
the video, and the lines remain; and the lines are the same each time I play
the video, no matter what app I use.

(I read that the transfer to VHS was done with a much higher quality than
the DVD. But I haven't found a copy yet.)

If it is the case that these lines are a part of the video, is there some
way to process them out?

Thanks for the response. Any and all help greatly appreciated.

ken