March 2006 - MEncoder-users - lists.mplayerhq.hu

dts audio ?
by SZABO Zsolt 08 Mar '06

08 Mar '06

I have a DVD, but there is some problem with the codec... [..] Software: MEncoder 1.0pre7try2-3.3.5 ========================================================================== Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders Cannot find codec 'dts' in libavcodec... ADecoder init failed :( ADecoder init failed :( Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF No accelerated IMDCT transform found hwac3: switched to DTS, 768000 bps, 48000 Hz AUDIO: 48000 Hz, 2 ch, ac3, 768.0 kbit/50.00% (ratio: 96000->192000) Selected audio codec: [hwdts] afm:hwac3 (DTS through S/PDIF) ========================================================================== vo: X11 running at 1280x1024 with depth 24 and 32 bpp (":10.0" => remote display ========================================================================== Cannot find codec matching selected -vo and video format 0x6F4E7246. Read DOCS/HTML/en/codecs.html! ========================================================================== Checking audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3... AF_pre: 48000Hz/2ch/ac3 [AO OSS] Can't set audio device /dev/dsp to ac3 output, trying s16le... AO: [oss] 48000Hz 2ch s16le (2 bps) Building audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/s16le... [format] Sample format big-endian AC3 not yet supported [libaf] Reinitialization did not work, audio filter 'format' returned error code Couldn't find matching filter/ao format! The speakers produce only noise. If I give -ac hwac3 then there is nothing, i.e. no sound: Software: MEncoder 1.0pre7try2-3.3.5 ========================================================================== Forced audio codec: hwac3 Cannot find codec for audio format 0x2001. Read DOCS/HTML/en/codecs.html! ========================================================================== Any hint? sZs

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xvid second pass
by Marco 06 Mar '06

06 Mar '06

Of these two pass commands $ mencoder dolbycity.vob -oac copy -ovc xvid -xvidencopts pass=1 -o /dev/null works $ mencoder dolbycity.vob -oac copy -ovc xvid -xvidencopts pass=2 -o out.avi gives me File not found: 'frameno.avi' Failed to open frameno.avi Using SSE optimized IMDCT transform Using MMX optimized resampler The selected video_out device is incompatible with this codec. xvid: you must specify one or a valid combination of 'bitrate', 'pass', 'quantizer' settings FATAL: Cannot initialize video driver. What's wrong? Thanks, Marco

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what is a good GTK mencoder frontend
by Kirill Radzikhovskyy 06 Mar '06

06 Mar '06

i've seen links on mencoders site to lots of frontends, which would u recomend me to try or which do u think is the best? GTK mencoder frontend Thanks in advance, Kirill -- Everything is made from a Dream - /-Sakurai Kazutoshi-/

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Interleave woes with cartoons.
by list-catcher＠hellburner.com 05 Mar '06

05 Mar '06

I have a mixed telecine, progressive, and interlaced cartoon that I'm trying to encode, it works fine for most of the video but occasionally the interlaced parts throw parts of the picture off badly. For example, in one segment most of the picture is fine except for a window in the background which appears to be vibrating due to the interlacing. My current options are: mencoder dvd://1 -vf crop=720:480:0:0 -oac lavc -ovc lavc -lavcopts \ vcodec=msmpeg4:vbitrate=1600:mv0:vqmin=3:trell:mbd=0 -ofps 24000/1001 -frames 10000 -o test_v1.avi I intend to use two pass encoding, but trying to stop the interlace problems first. I use msmpeg4 because of archive reasons. Any suggestions?

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Warbly sound
by Richard Wayne 04 Mar '06

04 Mar '06

I've been trying to convert a WMV file to dvd format and it seems to be working except that that audio sounds as though the people have been breathing helium and are talking through the blades of a fan. I don't know of any technical word for this but does it ring any bells with anyone is there a fix? I'm using the command from the manual for converting to NTSC DVD: http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-vcd-dvd.html#menc-feat-vcd-d… Any help would be appreciated. Rich

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Why use TOOLS/calcbpp.pl and scale ?
by dusty0＠freemail.gr 04 Mar '06

04 Mar '06

I was reading this document: http://www.mplayerhq.hu/DOCS/tech/encoding-tips.txt and I have a question to make: When I do a PAL dvd-rip (using xvid usually) why shouldn't I use the aspect ratio found in the DVD and use one suggested by calcbpp.pl ? Almost all the times I have checked up to now, the good aspect ratio values from calcbpp are smaller than the one that's inside the DVD.. Won't that lead to a quality loss ? Furthermore I must also scale the movie to the value suggested by calcbpp for the aspect ratio that I choose. I think that scaling leads to quality loss. It seems that I am a bit confused here. :( I thought that for a good dvd-rip I should, 1)crop the black borders 2)use the aspect ratio that inside the dvd. 3)don't scale because that leads to quality loss. 4)use a denoiser filter (optional) Any information/help is welcome. :) PS: For my dvd-rips I copy the sound found in the dvd and I use almost all the times video bitrates from 1052kbps and higher values.

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On2 VP6
by Jon Drukman 03 Mar '06

03 Mar '06

Is there any way to encode to on2's vp6 codec (new video codec for flash 8 movies) using mencoder? I've been googling but found nothing conclusive.

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adding black bars to maintain aspect ratio
by Jon Drukman 03 Mar '06

03 Mar '06

i am trying to figure out how to get mencoder to always output a 4:3 image, but with black bars added to preserve the original aspect ratio of the input video file. is it possible? i've played around with dsize and dscale using the negative value options but i always get a stretched 4:3 image. i could be putting in any aspect ratio video but i always want a 4:3 result with added black bars (if necessary). -jsd-

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FAAD throwing an infinite loop of errors with "-mc 0"
by Chris Putnam 02 Mar '06

02 Mar '06

I'm trying to convert NSV files to FLV using mencoder. I could not get the videos to encode with correct audio sync unless I set -mc 0 on the command line. This is my current command line: mencoder ghost.nsv -fps 30 -ofps 30 -noskip -o output.flv -af-adv force=3 -of lavf -oac mp3lame -lameopts cbr:br=24:mode=3 -ovc lavc -lavcopts vcodec=flv:vbitrate=150:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -mc 0 The output file is created, and the sync is correct. However, mplayer never exits. It just sits there looping this series of messages (the first line is only visible in high verbosity mode): ds_fill_buffer: EOF reached (stream: audio) FAAD: error: Unable to find ADTS syncword, trying to resync! FAAD: Failed to decode frame: Unable to find ADTS syncword I have to kill -9 the process to stop the messages. My output file is properly created, so that's good, but I can't automate this system due to the errors. You can recreate this error by downloading the .nsv file from http://gbs.tv/ghost.nsv and executing the command line from above. I am using v1.0pre7try2, downloaded today. I'd really appreciate any help I can get. Thanks Chris Putnam

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RTP streams
by Barta János 01 Mar '06

01 Mar '06

Hello! I would like to make an RTP stream with the ffmpeg, but I have a probleam with the RTP configuration. (Because mencoder and ffmpeg have a close friendship, perhaps it is not a problem, that I send this request to this list. :-) ) The configuration: Server IP: 10.22.2.135 Server Audio Port: 12300 Server Video Port: 12340 I'm not sure, but I think I need to configure 2 separeted streams. First I need to configure the video, and then the audio stream. (Of course, I always have to disable the other device.) For example: #!/bin/bash DEFAULT_HOST="10.22.2.135" AUDIO_PORT=12300 VIDEO_PORT=12340 # audio settings AUDIO_DEV="/dev/dsp" SRATE=8000 CHANNELS=1 #SRATE=22050 #CHANNELS=1 AUDIO_BITRATE=6 # video settings VIDEO_DEV="/dev/video" VIDEO_DEV_null="/dev/null" PIC_SIZE=qcif FRAME_RATE=6 VIDEO_BITRATE=52 Video: ffmpeg -y -an -vd $VIDEO_DEV -vcodec mpeg4 -f m4v -r $FRAME_RATE -s $PIC_SIZE -b $VIDEO_BITRATE -g 12 rtp://$DEFAULT_HOST:$VIDEO_PORT& Audio: ffmpeg -y -vd $VIDEO_DEV_null -vcodec mpeg4 -f m4v -ad $AUDIO_DEV -ar $SRATE -ac $CHANNELS -vn -ab $AUDIO_BITRATE -acodec amr_nb rtp://$DEFAULT_HOST:$AUDIO_PORT& ----- But it does not really work. I can make only one rtp stream. Why? And why can't I combine the 2 streams into one command, for example: ffmpeg -y -vd $VIDEO_DEV -vcodec mpeg4 -f m4v -r $FRAME_RATE -s $PIC_SIZE -b $VIDEO_BITRATE -g 12 -ad $AUDIO_DEV -ar $SRATE -ac $CHANNELS -vn -ab $AUDIO_BITRATE -acodec amr_nb rtp://$DEFAULT_HOST:$AUDIO_PORT It is not working too. And I have a second question. Can I open the multimedia devices (/dev/video, /dev/dsp) more than once? I would like to make more streams (with different codecs). But it takes multiple opens. Can Somebody help me? Thanks, Jani ___________________________________________________________________________ [origo] klikkbank lakossági számlacsomag havi 199 Ft-ért, bankkártya éves díj nélkül! www.klikkbank.hu

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