Yes Bernie, that's it. My distro is Gentoo, which means it i compiled
from a Gentoo source. I believe I can recompile it with the yuv4mpeg use
flag. I'll post another message once I succeed with the original command
set just to close this thread. Thank you for your help - Janos
On Sat, 8 Oct 2022 06:29:22 +0200
Bernhard Praschinger wrote:
> Hallo,
>
> It seems that your version of mplayer was not complied with the
> That is the important line: Error opening/initializing the selected
> video_out (-vo) device.
>
> Please do a test: > mplayer -vo help
> You should find a line like:
> yuv4mpegyuv4mpeg output for mjpegtools
>
> If not, it would mean to me that mplayer was compiled without
> yuv4mpeg support. My version of mplayer: MPlayer 1.4-7
>
> If you did compile it on you own please check when running t
> configure that you find in the enabled driver yuv4mpeg.
> Enabled optional drivers:
> Input: ftp pvr tv-v4l2 tv cddb cdda dvdread vcd dvb networking
> Codecs: libvpx xvid ffmpeg(internal) real xanim faac libmpeg2
> mpg123 speex
> Audio output: alsa pulse oss v4l2 sdl mpegpes(dvb)
> Video output: v4l2 matrixview opengl sdl pnm jpeg mpegpes(dvb)
> fbdev xvidix cvidix x11 xover yuv4mpeg md5sum tga
> ---END---
>
> If you use the precompiled version from your distribution I would
> recommend that you download the source and compile it on your own.
>
>
> Janos G Komaromi wrote:
> > Hello Bernie, thanks. Here is what happened:
> >
> > janos@andraslinux ~/tmp $ cat stream.yuv | yuvscaler -O SVCD |
> > mpeg2enc -f 4 -o video_svcd.m2v & mplayer -nosound -noframedrop -vo
> > yuv4mpeg ezcap0001.avi
> >
> > [1] 21535 INFO: [yuvscaler] yuvscaler 2.2.1 11-Dec-2007
> > INFO: [yuvscaler] (C) 2001-2004 Xavier Biquard
> > , yuvscaler -h for help, or man yuvscaler INFO:
> > [mpeg2enc] SETTING EXTENDED MMX for MOTION! INFO: [mpeg2enc]
> > SETTING SSE and MMX for TRANSFORM! INFO: [mpeg2enc] SETTING
> > EXTENDED MMX for PREDICTION! MPlayer 1.4-11.3.0 (C) 2000-2019
> > MPlayer Team
> >
> > Playing ezcap0001.avi.
> > libavformat version 58.76.100 (external)
> > AVI file format detected.
> > [aviheader] Video stream found, -vid 0
> > [aviheader] Audio stream found, -aid 1
> > VIDEO: [XVID] 800x592 24bpp 30.000 fps 896.5 kbps (109.4
> > kbyte/s) Error opening/initializing the selected video_out (-vo)
> > device. No stream found.
> >
> >
> > Exiting... (End of file)
> > janos@andraslinux ~/tmp $ ls
> > ezcap0001.avi stream.yuv
> >
> > I don't understand. if I issue command
> >
> > janos@andraslinux ~/tmp $ mplayer ezcap0001.avi
> >
> > MPlayer 1.4-11.3.0 (C) 2000-2019 MPlayer Team
> >
> > Playing ezcap0001.avi.
> > libavformat version 58.76.100 (external)
> > AVI file format detected.
> > [aviheader] Video stream found, -vid 0
> > [aviheader] Audio stream found, -aid 1
> > VIDEO: [XVID] 800x592 24bpp 30.000 fps 896.5 kbps (109.4
> > kbyte/s)
> > ==
> > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> > libavcodec version 58.134.100 (external) [mpeg4 @
> > 0x7ff6ba3a8f60]Requested frame threading with a custom
> > get_buffer2() implementation which is not marked as thread safe.
> > This is not supported anymore, make your callback thread-safe.
> > Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
> > ==
> > Load subtitles in ./
> > ==
> > Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III
> > AUDIO: 44100 Hz, 2 ch, s16le, 64.0 kbit/4.54% (ratio: 8000->176400)
> > Selected audio codec: [mpg123] afm: mpg123 (MPEG 1.0/2.0/2.5 layers
> > I, II, III)
> > ==
> > AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample) Starting
> > playback... Movie-Aspect is undefined - no prescaling applied.
> > VO: [xv] 800x592 => 800x592 Planar YV12
> > Movie-Aspect is 1.35:1 - prescaling to correct movie aspect.
> > VO: [xv] 800x592 => 800x592 Planar YV12
> > A: 16.2 V: 16.2 A-V: -0.001 ct: 0.012 486/486 27% 0% 0.9% 17 0
> >
> > Exiting... (Quit)
> > janos@andraslinux ~/tmp $
> >
> > the file starts to play almost imediately in a new window, perfectly
> > with sound and picture. So the video-out (-vo) device works
> > automatically with mplayer.
> >
> > Janos
> > P.S. I'm sending this message from my other email address, a
> > mailserver on my fitlet machine where I try glav, etc.
> >
> > On Thu, 06 Oct 2022 08:06:19 -0400
> > "Janos G. Komaromi" wrote:
> >
> >> Forwarded Message
> >> From: Bernhard Praschinger
> >> To: Janos G. Komaromi , MJPEG-tools user list
> >>
> >> Subject: Re: [Mjpeg-users] glav error opening .avi file
> >> Date: Thu, 6 Oct 2022 06:27:00 +0200
> >> Mailer: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20
