September 2005 - MEncoder-users - lists.mplayerhq.hu

differences in divx2pass.log between -oac copy and mp3lame
by John Suzuki 04 Sep '05

04 Sep '05

Between: $ mencoder -ovc lavc -lavcopts vpass=1 -oac copy ... and $ mencoder -ovc lavc -lavcopts vpass=1 -oac mp3lame ... the generated divx2pass.log files are different. I am curious as to why, since the log file depends on the video part, not the audio part, of the input, right?

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How to make FinalCutPro files ?
by juha s. 02 Sep '05

02 Sep '05

Hi gurus I need to convert MPEG2 files to format what FinalCut accepts on the fly. Here is exsample file made by FinalCut where you gurus can see what I need to make: [root@videosrv1 ~]# mencoder /tmp/blair.mov Using GNU internationalization Original domain: messages Original dirname: /usr/share/locale Current domain: mplayer Current dirname: /usr/share/locale MEncoder 1.0pre7-3.4.3 (C) 2000-2005 MPlayer Team CPU: Intel Pentium 4/Xeon/Celeron Northwood (Family: 8, Stepping: 4) Detected cache-line size is 64 bytes CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 Compiled with runtime CPU detection - WARNING - this is not optimal! To get best performance, recompile MPlayer with --disable-runtime-cpudetection. File not found: 'frameno.avi' Failed to open frameno.avi success: format: 0 data: 0x0 - 0x9a7f1ad QuickTime/MOV file format detected. -------------- MOV track #0: 172 chunks, 0 samples Image size: 720 x 576 (24 bpp) Display size: 720 x 576 Fourcc: dvcp Codec: 'DV - PAL' -------------- MOV track #1: 43 chunks, 0 samples Audio bits: 16 chans: 2 rate: 48000 Fourcc: twos -------------- MOV track #2: 1 chunks, 0 samples Generic track - not completely understood! (id: 2) -------------- MOV: longest streams: A: #1 (43 samples) V: #0 (1067 samples) VIDEO: [dvcp] 720x576 24bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s) [V] filefmt:7 fourcc:0x70637664 size:720x576 fps:25.00 ftime:=0.0400 No audio encoder (-oac) selected. Select one (see -oac help) or use -nosound. Exiting... [root@videosrv1 ~]# ffmpeg -i /tmp/blair.mov ffmpeg version 0.4.9-pre1, build 4753, Copyright (c) 2000-2004 Fabrice Bellard configuration: --build=i686-redhat-linux-gnu --host=i686-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-a52 --enable-a52bin --enable-pp --enable-shared-pp --enable-shared --enable-gpl --disable-opts --disable-strip built on May 5 2005 07:44:24, gcc: 3.4.3 20050227 (Red Hat 3.4.3-22.fc3) Input #0, mov,mp4,m4a,3gp,3g2, from '/tmp/blair.mov': Duration: 00:00:42.6, start: 0.000000, bitrate: 30365 kb/s Stream #0.0: Video: dvvideo, 720x576, 25.00 fps Stream #0.1: Audio: pcm_s16be, 48000 Hz, stereo, 1536 kb/s Must supply at least one output file [root@videosrv1 ~]# So basicly I need to convert MPEG2 files to DVVIDEO with PCM_s16be audio. Thanks for any help -Jussi

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how to generate a bivx ?
by Cyrille Lefevre 02 Sep '05

02 Sep '05

Hi, Is there a way to generate an avi w/ 2 audio channels (aka bivx) ? or to convert an ogm w/ 2 audio channels to a bivx ? I'm not interrested by ogm since most hardware players don't know anything on ogm, but know how to read a bivx (even divx6 w/ more than 2 audio channels). I didn't see anything into the doc or this forum :( any pointers ? Thanks in advance, Cyrille Lefevre -- mailto:Cyrille.Lefevre-lists@laposte.net

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call mencoder when the input directory is a network drive
by Jesse Corrington 02 Sep '05

02 Sep '05

I am trying to call mencoder, with an input directory that is a network drive on my server. In the input directory, there are jpeg images, which i need to make a movie from. When i do it with the files on the server, the movie gets messed up. If i copy the files to my local drive and then do them, there is no problem. Here is the command i am using. mencoder mf://*.jpg -mf type=jpg -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=16000:keyint=15 -ffourcc XVID -nosound -o corrppmovie.avi _________________________________________________________________ Dont just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/

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Need some hints for my tv recording concept
by Gerhard Brauer 01 Sep '05

01 Sep '05

Hi, it's my first posting on the list and i would like to get some special hints for an generally exercise: tv recording on pc. First: at the moment, after researching and try-and-error, i have (for me) a working concept for recording and watching on/from tv. But i'm sure there are things i could do better. My equipement ist low: i use a digital sat receiver. A friend gave me his old analog tv card, which i connected over s-video with the receiver. My vcr-pc is a 500Mhz P3, don't laugh ;-), with an ATI Rage128 tv-out. For me, it's a null cent solution to record and watch video/dvd. My first tries goes to record at full pal resolution, but therefor my pc is to slow (video buffer full) when i must use a compressed video codec (mjpec i think is good codec for real time). After accepting this i used solution A: A) record at 352x288 These are the parameters for my mencoder record script: -------------INPUT ---------------------# ## ### TV TV="driver=v4l2:device=/dev/video:input=1:amode=1" TVOPT=":mjpeg:decimation=2:quality=100" # ------------ OUTPUT --------------------# ## ### VIDEO VID="lavc" # -ovc VIDOPT="-lavcopts vcodec=mjpeg:mbd=1:autoaspect:abitrate=128:acodec=ac3:mv0:nr=10" ## ### AUDIO AUD="lavc" # -oac AUDOPT="" With this i get records in a good quality, a bit big size and moderate cpu usage. Next step is: reduce file size, improve quality. Watching the recorded video on tv, which is much worse than my pc monitor, is ok but on pc (full screen scaling) there are edges, flicker,... So i reencode the video later on a faster pc after recording where i must not care about real time things: -vf pp=de,scale=704:544,denoise3d -oac copy -ovc lavc -lavcopts vcodec=mpeg4:mbd=1:aspect=4/3 -sws 1 -ffourcc divx With this second process i got a video with "good" quality, low size. And here i have some questions: a) scaling the low source video to a bigger size, isn't this not something like "interpoling" by low-budget scanners? My thought was that software scaling may have a better quality then later scaling in real time by hardware? b) Are there filters,one/two pass runs or any other parameters,things you would do? I tested a lot but mostly i do not see a real difference. c) The -ffourcc option. Is it correct that lavc with vcodec=mpeg4 produce a divx coded video? All my linux player accepted the coded videos but on a friends windows pc (with vlc player) it wouldn't play. Only until i use the above -ffourcc with divx or DX50 he could play it. So: is this option rather a cosmetic entry in the header or do i really change the codec by setting/changing this parameter? My solution B and my actual solution: My thougt was: as better the source materials resolution then the rescaled video is also better, nevertheless if i do this by software or hardware. Solution B record parameters) ## ### TV TV="driver=v4l2:device=/dev/video:input=1:amode=1" TVOPT=":mjpeg:decimation=1:quality=80:width=544:height=408" # ------------ OUTPUT --------------------# ## ### VIDEO VID="lavc" # -ovc VIDOPT="-lavcopts vcodec=mjpeg:mbd=1:aspect=4/3:abitrate=128:acodec=ac3:mv0:nr=10" ## With this i get a 544x408 video and this resolution is about the max what my pc could record without overfulled video buffer. This source material could i reencode as above to divx plus filters. I think rescaling produces a very better result than the result from solution A. Or BTW i don't need rescaling anymore. Especially watching on pc is much better. So: actually i am pleased with this concept. And yes, after seeing that a newbie like me could get good results i thought about buying a DVD card. But i'm curious about getting some hints to do it better or in an other way. Greetings Gerhard

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