January 2007 - MEncoder-users - lists.mplayerhq.hu

Video/Audio asynchronous
by Markus Bonet 20 Feb '07

20 Feb '07

Hi, I am doing some conversions between mpeg2 (TS) to mpeg4 (vxid) via mencoder. The TS isn't demultiplexed as I am using the TS directly as input. When done, the result is slightly asynchronous. mencoder itself reports a very slight delay (0,048s) but the result is even more asynchronous. Setting -delay 0 didn't help. Any clue? Markus

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Producing .mp4 files?
by Serhiy Tkachenko 16 Feb '07

16 Feb '07

Is it possible to produce Apple quicktime .mp4 files with mencoder ? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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How to encode into DV?
by Levente Novák 31 Jan '07

31 Jan '07

I would like to grab from a v4l2 source and encode into DV. How is it possible with MEncoder? If I specify: mencoder tv:// -tv driver=v4l2:device=/dev/video0:input=0:outfmt=YV12:width=720:height=576: fps=25:audiorate=48000:forceaudio:amode=1:forcechan=2 -srate 48000 -of lavf -lavfopts format=dv:i_certify_that_my_video_stream_does_not_use_b_frames -oac pcm -ovc lavc -lavcopts vcodec=dvvideo -o grab.dv Then all I get is: MEncoder dev-SVN-r22076-4.1.2 (C) 2000-2006 MPlayer Team CPU: Intel(R) Celeron(R) CPU 3.06GHz (Family: 15, Model: 4, Stepping: 1) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 success: format: 9 data: 0x0 - 0x0 TV file format detected. Selected driver: v4l2 name: Video 4 Linux 2 input author: Martin Olschewski <olschewski(a)zpr.uni-koeln.de> comment: first try, more to come ;-) Selected device: BT878 video (Pinnacle PCTV Stud Tuner cap: Tuner rxs: MONO Capabilites: video capture video overlay VBI capture device tuner read/write streaming supported norms: 0 = PAL; 1 = NTSC; 2 = SECAM; 3 = PAL-Nc; 4 = PAL-M; 5 = PAL-N; 6 = NTSC-JP; 7 = PAL-60; inputs: 0 = Television; 1 = Composite1; 2 = S-Video; Current input: 0 Current format: YVU420 v4l2: current audio mode is : STEREO Audio block size too low, setting to 16384! [V] filefmt:9 fourcc:0x32315659 size:720x576 fps:25.00 ftime:=0.0400 ========================================================================== Opening audio decoder: [pcm] Uncompressed PCM audio decoder AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio: 192000->192000) Selected audio codec: [pcm] afm: pcm (Uncompressed PCM) ========================================================================== ** MUXER_LAVF *****************************************************************You have certified that your video stream does not contain B frames. REMEMBER: MEncoder's libavformat muxing is presently broken and will generate INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer will play these INCORRECT files as if nothing were wrong! *******************************************************************************OK, exit Opening video filter: [expand osd=1] Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1 ========================================================================== Opening video decoder: [raw] RAW Uncompressed Video VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12) VDec: using Planar YV12 as output csp (no 0) Movie-Aspect is undefined - no prescaling applied. videocodec: libavcodec (720x576 fourcc=69767664 [dvvi]) Selected video codec: [rawyv12] vfm: raw (RAW YV12) ========================================================================== Forcing audio preload to 0, max pts correction to 0. New_Face failed. Maybe the font path is wrong. Please supply the text font file (~/.mplayer/subfont.ttf). subtitle font: load_sub_face failed. VIDEO CODEC ID: 01f ( 0%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0] AUDIO CODEC ID: 10000, TAG: 0 Writing header... [dv @ 0x87a2308]Can't initialize DV format! Make sure that you supply exactly two streams: video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM (50Mbps allows an optional second audio stream) Floating point exception Levente

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3 passes encoding failures.
by Samuel Lu 31 Jan '07

31 Jan '07

Hi all mplayer fans, i'm using the 3 pass to encode my clips as below, which written in python: mencoder %(Input)s -oac mp3lame -lameopts br=96:cbr:vol=6 -ovc frameno -o %(Output)s mencoder Input -sws 2 -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=629:vpass=1 -vf %(Segment)s -o %(Output)s' 'mencoder %(Input)s -sws 2 -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=629:vpass=2 -vf %(Segment)s -o %(Output)s' but while i'd like to playback this clips, the video always can't show on my linux box as prompted the messages below: VIDEO: [FrNo] 720x480 24bpp 29.970 fps 1.0 kbps ( 0.1 kbyte/s) Clip info: Software: MEncoder dev-SVN-r21877-4.1.2 Opening video filter: [eq2=1.0:-0.8] ========================================================================== Cannot find codec matching selected -vo and video format 0x6F4E7246. i'm doubt my 'ffmpeg' which leads my encoding process not working, so this is my ffmpeg messages: FFmpeg version SVN-r7446, Copyright (c) 2000-2006 Fabrice Bellard, et al. configuration: --enable-gpl --enable-a52 --enable-mp3lame --enable-pp --enable-pthreads --enable-faac --enable-faad --enable-faadbin --enable-xvid libavutil version: 49.1.0 libavcodec version: 51.28.0 libavformat version: 51.7.0 built on Jan 14 2007 03:50:55, gcc: 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5) How can i solve this issue, and any help would be highly appreciated. Best Regards, samuel@Taiwan NTU Physics Department

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wmv - flash bus error issue
by Steve 31 Jan '07

31 Jan '07

I have been trying to get a wmv to encode to flash for the last day, I was even on mplayer irc channel on freenod. Here is my current situation. wmv file which plays on the PC and also plays on mplayer on the box im using to encode with. Wmv file specs Audio: Windows Media Audio 48000Hz stereo 384Kbps [Raw Audio 0] Video: Windows Media Video 9 320x240 29.97fps 250Kbps [Raw Video 1] I believe the audio is blank but with wmv's u need a audio track to at least play.. Im assuming this was the case with this video cause I looked at the wav file and nothing in it. Anyhow that's beside the point but I thought I would mention it if that's causing the buss error. Latest svn built just for mencoder * MEncoder dev-SVN-r22065-3.4.2 (C) 2000-2006 MPlayer Team * CPU: Intel(R) Xeon(TM) CPU 2.40GHz (Family: 15, Model: 2, Stepping: 9) * CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 * Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 My command line im using to convert to flash This doesn't work causes a buss error: * $ mencoder 179.wmv -o 179.flv -of lavf -ovc lavc -oac lavc -lavcopts vcodec=flv:vbitrate=540:autoaspect:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:pred ia=2:dia=2:precmp=2:cmp=2:subcmp=2:preme=2:turbo:acodec=mp3:abitrate=56 -vf scale=320:240 -srate 22050 -af lavcresample=22050 -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames * MEncoder dev-SVN-r22065-3.4.2 (C) 2000-2006 MPlayer Team * CPU: Intel(R) Xeon(TM) CPU 2.40GHz (Family: 15, Model: 2, Stepping: 9) * CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 * Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 * * success: format: 0 data: 0x0 - 0x5dca2b * ASF file format detected. * VIDEO: [WMV3] 320x240 24bpp 29.970 fps 0.0 kbps ( 0.0 kbyte/s) * [V] filefmt:6 fourcc:0x33564D57 size:320x240 fps:29.97 ftime:=0.0334 * ========================================================================== * Opening audio decoder: [dmo] Win32/DMO decoders * GetOutput r=0x0 size:24576 align:1 * StreamCount r=0x0 1 1 * AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000) * Selected audio codec: [wma9dmo] afm: dmo (Windows Media Audio 9 DMO) * ========================================================================== * ** MUXER_LAVF ***************************************************************** * You have certified that your video stream does not contain B frames. * REMEMBER: MEncoder's libavformat muxing is presently broken and will generate * INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer * will play these INCORRECT files as if nothing were wrong! * **************************************************************************** *** * OK, exit * Opening video filter: [expand osd=1] * Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1 * Opening video filter: [scale w=320 h=240] * ========================================================================== * Opening video decoder: [dmo] DMO video codecs * DMO dll supports VO Optimizations 0 1 * DMO dll might use previous sample when requested * GetOutput r=0x0 size:230400 align:1 * StreamCount r=0x0 1 1 * Decoder supports the following formats: YV12 YUY2 UYVY YVYU RGB8 RGB555 RGB565 RGB24 RGB32 * Decoder is capable of YUV output (flags 0x1b) * VDec: vo config request - 320 x 240 (preferred colorspace: Packed YUY2) * VDec: using Planar YV12 as output csp (no 0) * Movie-Aspect is undefined - no prescaling applied. * [swscaler @ 0x8668a10]SwScaler: using unscaled yuv420p -> yuv420p special converter * videocodec: libavcodec (320x240 fourcc=31564c46 [FLV1]) * [VE_LAVC] High quality encoding selected (non-realtime)! * Selected video codec: [wmv9dmo] vfm: dmo (Windows Media Video 9 DMO) * ========================================================================== * Bus error This the same thing if I add in -nosound at the end, how ever with my project im working on I have to be able to encode Video if it has audio or not to play back. Testing playback in the cmd line shows you the video starts to playback with out issues. * mplayer 179.wmv -ao null -vo md5sum * MPlayer dev-SVN-r22065-3.4.2 (C) 2000-2006 MPlayer Team * CPU: Intel(R) Xeon(TM) CPU 2.40GHz (Family: 15, Model: 2, Stepping: 9) * CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 * Compiled with runtime CPU detection. * * Playing 179.wmv. * ASF file format detected. * VIDEO: [WMV3] 320x240 24bpp 29.970 fps 0.0 kbps ( 0.0 kbyte/s) * Clip info: * name: rick * author: * copyright: * comments: * md5sum: Parsing suboptions. * md5sum: Suboptions parsed OK. * ========================================================================== * Opening video decoder: [dmo] DMO video codecs * DMO dll supports VO Optimizations 0 1 * DMO dll might use previous sample when requested * GetOutput r=0x0 size:230400 align:1 * StreamCount r=0x0 1 1 * Decoder supports the following formats: YV12 YUY2 UYVY YVYU RGB8 RGB555 RGB565 RGB24 RGB32 * Decoder is capable of YUV output (flags 0x1b) * VDec: vo config request - 320 x 240 (preferred colorspace: Packed YUY2) * VDec: using Planar YV12 as output csp (no 0) * Movie-Aspect is undefined - no prescaling applied. * VO: [md5sum] 320x240 => 320x240 Planar YV12 * Selected video codec: [wmv9dmo] vfm: dmo (Windows Media Video 9 DMO) * ========================================================================== * ========================================================================== * Opening audio decoder: [dmo] Win32/DMO decoders * GetOutput r=0x0 size:24576 align:1 * StreamCount r=0x0 1 1 * AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000) * Selected audio codec: [wma9dmo] afm: dmo (Windows Media Audio 9 DMO) * ========================================================================== * AO: [null] 48000Hz 2ch s16le (2 bytes per sample) * Starting playback... * A: 6.2 V: 5.4 A-V: 0.839 ct: 0.240 49/ 49 3% 2% 1.4% 0 0 $<50/> Any thoughts as to why this is happening or what I can do to fix this issue. My system is freebsd 5.4 stable steve tietze gateway(a)tietze.com http://ibareitall.com <http://ibareitall.com/> blog

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audio-density option
by Ben Staz 31 Jan '07

31 Jan '07

Hi, I will first quote from the mencoder manual. -audio-density <1-50> Number of audio chunks per second (default is 2 for 0.5s long audio chunks). NOTE: CBR only, VBR ignores this as it puts each packet in a new chunk. I am wondering what is the best setting to use when using mencoder to create an XviD avi with AC3 audio. Lets say the source is a PAL DVD (25 fps) Then the audio density default would be, 2 chunks per 25 frames (second). I have heard that interleaving settings for AC3 is best at 1 chunk per 2 or 3 frames. So : 25/2 = 12.5 chunks a second Or : 25/3 = 8.33 chunks per second. These figures are a lot larger than the default. What do you guys recommend? Cheers

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Converting avi to mp4 for PSP Firmware 1.5
by Tobias Großmann 30 Jan '07

30 Jan '07

Hello people, I search a way to convert some avi-files for my psp with firmware 1.5. Unfortunatly I only found the syntax for converting movies for PSP Firmware 2.0 and higher. This movies doesn't work at my psp, so does anybody know the correct parameters for firmware 1.5. Here are the parameters, I have tried: mencoder -oac lavc -of lavf aglobal=1:vglobal=1:vcodec=mpeg4:acodec=aac -af lavcresample=24000 -vf harddup -lavfopts format=psp:i_certify_that_my_video_stream_does_not_use_b_frames -ofps 30000/1001 test.avi -o test.mp4 I use debian sarge.. Thank for your help

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AAC encoding
by Olivier Rolland 30 Jan '07

30 Jan '07

Hi, I'm trying to mux an AAC audio stream and a X264 video stream into an AVI container. The audio file has been extracted in PCM from a DVD and encoded in AAC with faac. The video file has been encoded directly from the DVD: $ mplayer -mc 0 -vc null -vo null -ao pcm:fast:nowaveheader:file=audio.wav -aid 129 dvd://1 $ faac -P -R 48000 -q 157 -C 2 -X --mpeg-vers 4 -o audio.aac audio.wav $ mencoder -mc 0 -oac pcm -channels 1 -srate 4000 -aid 129 -sws 7 -vf crop=720:416:0:80,scale=464:192,hqdn3d=2:1:2,harddup -ovc x264 -x264encopts subq=5:b_pyramid:weight_b:8x8dct:frameref=2:turbo=1:bitrate=549 -o video.avi dvd://1 If I play both files with mplayer, they are perfectly in sync: $ mplayer -audiofile audio.aac video.avi However, I'm having problems when I want to mux them together in AVI. First, I must add -audio-demuxer aac -fafmttag 0x706D in order for mencoder to correclty identify the audio file (this was not needed with mplayer). Second, the resulting file is always out of sync. I've tried all combinations of -mc 0 and -noskip with no avail. I've also played with faac options (-r, -w, --mpeg-vers) but this doesn't help either and can even be worse with -w: the audio file is never demuxed by "mencoder --audiofile" whatever the audio-demuxer even though it is perfectly demuxed by "mplayer --audiofile". $ mencoder -nosound -noskip -mc 0 -ovc copy -oac copy -o movie.avi -audiofile audio.aac -audio-demuxer aac -fafmttag 0x706D video.avi I've then tried to merge in MP4 with no better result. Any idea ? Thanks, Olivier

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audio sync
by listman 30 Jan '07

30 Jan '07

This has been gone over 100 times, Ive looked through the archives and even tried transcode. Is there any way to correct the sync on audio correctly? I have tried -mc 0 -ni -noskip harddup but still have a few dvds I can not get to sync. what is the real answer here. Even with transcode and the options they say to use I still get audio that is way out of sync, the worst movie I have tried is aeon flux also syriana was pretty bad. Is there anyway to guarantee the audio syncs up?

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Vertical streaks corruption in FLV transcode output
by Geoffrey Broadwell 30 Jan '07

30 Jan '07

I have been transcoding various videos into FLV in a number of bitrates using MEncoder. I've found that a fair number of them exhibit a nasty corruption in certain frames -- the top section of the frame looks normal, but below a certain scanline, the entire rest of the frame is just copies of the same line. This ends up looking like most of the frame is composed of vertical streaks of color. This only happens to single frames; the frames before and after look fine. Here's an example of the problem: I started with the 1080p version of the Transformers trailer on the Apple site, and transcoded it to FLV using the following command line (my apologies for the line wrapping): /usr/local/bin/mencoder -v -quiet -mc 0 -of lavf -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -oac mp3lame -ovc lavc -lavcopts vcodec=flv:mbd=2:v4mv:mv0:last_pred=3:preme=2:trell:cbp:vbitrate=538:keyint=23 -lameopts q=6 -srate 44100 -ofps 11.976 -vf-add scale=640:256 -o "./transformers-1080p_650.flv" "transformers-1080p.mov" 2>&1 Here's a copy of the transcode: http://broadwell.org/images/misc/transformers-1080p_650.flv The corruption can be seen at frame 427 (35.6 seconds), frame 659 (54.9 seconds), frame 847 (70.6 seconds), etc. I've tried various versions of MEncoder (the above file was made using SVN as of Friday), and they all show this corruption, but on *different frames*. What's going wrong here? Am I using some bad combination of encoding options, or is this a known bug? If it's a known problem, what's the workaround? -'f

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