May 2008 - MEncoder-users - lists.mplayerhq.hu

VP6 two pass encoding
by vpupkin＠comcast.net 04 May '08

04 May '08

hi there, found this post: http://article.gmane.org/gmane.comp.video.mencoder.user/7032/match=vp6vfw+d… do I still need to apply this patch or main trunk already has it for 2pass encoding using VP6 codec? compiled mencoder from the main trunk, still can't get 2pass encoding working. when I run mencoder with the first pass settings file, it doesn't create a log file (statistics are on the standard ouput) I can save that into a file, i.e.: $ mencoder ... 0> 1stpass.log is there a way to use this log file + mencoder with 2nd pass settings file? I've tried to play with logfile name in the codec dialog window, file name without any path doesn't help. I'm on linux (ubuntu gutsy), when I try to call mencoder with 2nd pass settings file, it freezes. strace shows it's trying to read something (I assume can't find a log file) anyway, let me know if more debugging info would help, or perhaps I'm missing some important step. best, and thanks for mencoder --Alex

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Re: [MEncoder-users] Mencoder does not cut exactly
by TAJTHY Tamás 03 May '08

03 May '08

Dear SasQ, Dnia 02-05-2008 o 22:17:55 TAJTHY Tam?s <tajthy(a)mailbox.hu> napisa?: > Could You thell me why mencoder can not cut an mjpeg file exactly? > Isn't it that it can cut only on keyframes? In MJPEG every frame is keyframe. That's why I don't understand why it difficult to cut it exactly. Good byte! From:

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Re: [MEncoder-users] Mencoder does not cut exactly
by TAJTHY Tamás 02 May '08

02 May '08

Dear Etienne, >> mencoder ..compression-arguments.. -ss 1.120 -endpos 1:23:00.000 -o >> cut.avi patch.avi; >> >> My problem is that the resulted file does not contain the exact frames. >> Depending on the -ss option it can be +/-1 frames different. At the end >> position can be +/- 4 frames different. If I add 3-5 ms to the -ss and >> -endpos options so the start become puntual, but the problem still appears >> at the end. >The -ss and -endpos method is quite inacurrate (even if you got a very > good accuracy for using those IMHO...). > You'd better use -hr-edl-seek, after selecting good timestamps using > -edlout. From the manpage: See http://www.mplayerhq.hu/DOCS/HTML/en/edl.html for details. I modified my program to generate edl file and I used -edl option in both passes. The result is the same as with -ss and -endpos. I modified the start and end times a little bit to cut the exact frames and it seems it is not deterministic. If I add more lines to the edl file two frames appears at the end of the first section. The first section does not start with the 1st frame, but the 4th (and then goes the 1st and the other frames). I don't uderstand why! Could You thell me why mencoder can not cut an mjpeg file exactly? Thanx in advance!

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Creating Bluray compliant video with Mencoder
by Nicolas Hesler 02 May '08

02 May '08

Is it possible to create Bluray compliant video with Mencoder? (Both MPEG-2 and H.264?) If you know how, could you please post a sample command line for each?

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Fixing broken MPEG files
by Eric Buist 02 May '08

02 May '08

Hello, I would like to know if MEncoder can be used to repair broken MPEG files. Two days ago, my set-top DVD recorder mysteriously created a non-working DVD+RW disk. I cannot figure out why, but no set-top DVD player could read the disk, but the computer could. I tried to reburn the disk with growisofs, then to recreate the .vob files with dvdauthor, but dvdauthor asked me to remux the MPEG files. I did that with MEncoder, using stream copy, so I could dvdauthor the MPEG files, but the resulting DVD is still un readable by standalone players. The command-line for this was mencoder -oac copy -ovc copy -of mpeg -mpegopts format=dvd:tsaf -o t1.mpg dvd://1 I looked more carefully at the output of dvdauthor, and noticed that there wre problems with some GOPs. Is it possible, with MEncoder or another Linux tool, to repair the MPEG movie without reencoding it? I am a bit upset that in fact, the problem could come from the DVDAuthor version which comes with Ubuntu 8.04. In that latter case, I would not be able to create DVD-Video anymore with Linux, unless I downgrade to Ubuntu 7.10. In addition, would I have more luck with DVD-RW instead of DVD+RW for my standalone DVD recorder? I would really like to avoid trying multiple types and brands of disks to get something reliable. Eric

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Invalid AC3 file
by Justin Randall 02 May '08

02 May '08

Hi all, I was trying to convert what I believe to be a valid AC3 file I demuxed out of a matroska file. I believe it is valid since it plays just fine in VLC and in windows media player classic using ffdshow. I would attach the ac3 but it is 54 megs. I was wondering if this is a known bug in mplayer/mencoder or if anybody else has experienced this issue? Here is the output from mplayer. >> mplayer "the.big.bang.theory.s01e14.720p.hdtv.x264-ctu.ac3" MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ (Family: 15, Model: 43, Step ping: 1) CPUflags: MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1 Compiled with runtime CPU detection. Playing C:\the.big.bang.theory.s01e14.720p.hdtv.x264-ctu_convert\the.big.bang.theory.s01e14.720p.hdtv.x264-ctu.ac3 . libavformat file format detected. [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 32 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Video: mpeg2video) [mpeg @ 00E1E768]Could not find codec parameters (Video: mpeg1video, 1195x1092, 78579 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 224 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 80 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 96 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 32 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 128 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 48 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 80 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Video: mpeg1video, 2939x3081, 12960 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 128 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 80 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 224 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 96 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 80 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 56 kb/s) [mpeg @ 00E1E768]Could not find codec parameters (Video: mpeg2video) [mpeg @ 00E1E768]Could not find codec parameters (Video: mpeg2video) [mpeg @ 00E1E768]Could not find codec parameters (Audio: mp2, 320 kb/s) LAVF_header: av_find_stream_info() failed MPEG-PES file format detected. MPEG: FATAL: EOF while searching for sequence header. Video: Cannot read properties. ========================================================================== Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 ADecoder init failed :( ADecoder init failed :( Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders Unknown/missing audio format -> no sound ADecoder init failed :( Opening audio decoder: [libmad] libmad mpeg audio decoder Cannot sync MAD frame ADecoder init failed :( ADecoder init failed :( Opening audio decoder: [hwmpa] MPEG audio pass-through (fake decoder) Cannot sync MPA frame: 0 ADecoder init failed :( ADecoder init failed :( Cannot find codec for audio format 0x50. Read DOCS/HTML/en/codecs.html! Audio: no sound Video: no video Exiting... (End of file) The file information from the AC3 parser filter for media player classic is here if that helps anyone: - Connection media type: Audio: Dolby AC3 48000Hz 6ch 384Kbps AM_MEDIA_TYPE: majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71} subtype: MEDIASUBTYPE_DOLBY_AC3 {E06D802C-DB46-11CF-B4D1-00805F6CBBEA} formattype: FORMAT_WaveFormatEx {05589F81-C356-11CE-BF01-00AA0055595A} bFixedSizeSamples: 1 bTemporalCompression: 0 lSampleSize: 1 cbFormat: 18 WAVEFORMATEX: wFormatTag: 0x0000 nChannels: 6 nSamplesPerSec: 48000 nAvgBytesPerSec: 48000 nBlockAlign: 1536 wBitsPerSample: 0 cbSize: 0 (extra bytes) And the information from the original matroska file using mkvinfo is here: >>mkvinfo "the.big.bang.theory.s01e14.720p.hdtv.x264-ctu.mkv" + EBML head |+ Doc type: matroska |+ Doc type version: 1 |+ Doc type read version: 1 + Segment, size 586014961 |+ Seek head (subentries will be skipped) |+ EbmlVoid (size: 4027) |+ Segment information | + Timecode scale: 1000000 | + Muxing application: libebml v0.7.7 + libmatroska v0.8.1 | + Writing application: mkvmerge v2.0.2 ('You're My Flame') built on Sep 20 200 7 09:25:45 | + Duration: 1181.600s (00:19:41.600000000) | + Date: Tue Apr 29 01:23:53 2008 UTC | + Segment UID: 0xec 0x71 0x83 0xea 0x2f 0xe9 0x33 0xc0 0x7d 0x38 0x66 0x06 0xc c 0x91 0x3f 0x14 |+ Segment tracks | + A track | + Track number: 1 | + Track UID: 3668660603 | + Track type: audio | + Enabled: 1 | + Default flag: 1 | + Forced flag: 0 | + Lacing flag: 1 | + MinCache: 0 | + Timecode scale: 1.000000 | + Max BlockAddition ID: 0 | + Codec ID: A_AC3 | + Codec decode all: 1 | + Default duration: 32.000ms (31.250 fps for a video track) | + Language: und | + Audio track | + Sampling frequency: 48000.000000 | + Channels: 6 | + A track | + Track number: 2 | + Track UID: 1 | + Track type: video | + Enabled: 1 | + Default flag: 1 | + Forced flag: 0 | + Lacing flag: 0 | + MinCache: 1 | + Timecode scale: 1.000000 | + Max BlockAddition ID: 0 | + Codec ID: V_MPEG4/ISO/AVC | + Codec decode all: 1 | + CodecPrivate, length 39 | + Default duration: 41.708ms (23.976 fps for a video track) | + Language: eng | + Video track | + Pixel width: 1280 | + Pixel height: 720 | + Interlaced: 0 | + Display width: 16 | + Display height: 9 |+ EbmlVoid (size: 1024) |+ Cluster If anybody has stumbled across this problem before, I would be happy to know about it. Any help is appreciated. If I've posted this to the wrong list, than I apologize. Thanks, Justin

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Mencoder does not cut exactly
by TAJTHY Tamás 01 May '08

01 May '08

Hi, I have a strange problem. I have a mjpeg avi file and I'd like to cut a part from it and convert to mpeg4. I detected the frames by VirtualDub. I did the following: mencoder ..compression-arguments.. -ss 1.120 -endpos 1:23:00.000 -o cut.avi patch.avi; My problem is that the resulted file does not contain the exact frames. Depending on the -ss option it can be +/-1 frames different. At the end position can be +/- 4 frames different. If I add 3-5 ms to the -ss and -endpos options so the start become puntual, but the problem still appears at the end. Could anybody help me how could I cut the exact frames I need? Thanks in Advance!

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Trouble Compiling SVN version
by Charles philip Chan 01 May '08

01 May '08

Hello all: For the past few days I have been having trouble conpiling the svn version. The undefined references seem to be from rtsp.h, but there are no object files created during make in streams/librtsp. Here is the output from make: ,----[ Errors from Make ] | stream/realrtsp/real.o: In function `real_get_rdt_chunk': | real.c:(.text+0x82): undefined reference to `rtsp_read_data' | real.c:(.text+0x103): undefined reference to `rtsp_read_data' | real.c:(.text+0x14b): undefined reference to `rtsp_read_data' | real.c:(.text+0x168): undefined reference to `rtsp_read_data' | real.c:(.text+0x192): undefined reference to `rtsp_read_data' | stream/realrtsp/real.o:real.c:(.text+0x209): more undefined references to `rtsp_read_data' follow | stream/realrtsp/real.o: In function `real_setup_and_get_header': | real.c:(.text+0x2cd): undefined reference to `rtsp_get_mrl' | real.c:(.text+0x2e8): undefined reference to `rtsp_search_answers' | real.c:(.text+0x3d4): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x403): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x413): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x423): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x433): undefined reference to `rtsp_schedule_field' | stream/realrtsp/real.o:real.c:(.text+0x443): more undefined references to `rtsp_schedule_field' foll | ow | stream/realrtsp/real.o: In function `real_setup_and_get_header': | real.c:(.text+0x48a): undefined reference to `rtsp_request_describe' | real.c:(.text+0x4b8): undefined reference to `rtsp_search_answers' | real.c:(.text+0x57c): undefined reference to `rtsp_search_answers' | real.c:(.text+0x59b): undefined reference to `rtsp_search_answers' | real.c:(.text+0x5e2): undefined reference to `rtsp_search_answers' | real.c:(.text+0x601): undefined reference to `rtsp_search_answers' | real.c:(.text+0x62e): undefined reference to `rtsp_read_data' | real.c:(.text+0xdc3): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xe0c): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xe23): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xe74): undefined reference to `rtsp_request_setup' | real.c:(.text+0xea4): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xef2): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xf4a): undefined reference to `rtsp_request_setup' | real.c:(.text+0xf77): undefined reference to `rtsp_schedule_field' | real.c:(.text+0xf8e): undefined reference to `rtsp_request_setparameter' | real.c:(.text+0xfb4): undefined reference to `rtsp_get_param' | real.c:(.text+0x1089): undefined reference to `rtsp_get_param' | real.c:(.text+0x11af): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x11c6): undefined reference to `rtsp_request_play' | real.c:(.text+0x1305): undefined reference to `rtsp_search_answers' | real.c:(.text+0x1338): undefined reference to `rtsp_send_ok' | real.c:(.text+0x1462): undefined reference to `rtsp_schedule_field' | real.c:(.text+0x1472): undefined reference to `rtsp_request_setparameter' | collect2: ld returned 1 exit status | make: *** [mplayer] Error 1 `---- Have anyone else encountered this? Thanks. Charles

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