September 2005 - MPlayer-advusers

Mencoder + lavf == BOOM !
by Guillaume POIRIER 03 Oct '05

03 Oct '05

Hi there, A command such as: mencoder input.movie -o 2.flv -of lavf -ovc lavc -oac lavc -lavcopts vcodec=flv or any command line that uses lavf produces a SIGFPE. Here is the log+backtrace success: format: 0 data: 0x0 - 0x788b0000 MPEG-PS file format detected. VIDEO: MPEG2 720x576 (aspect 2) 25.000 fps 9800.0 kbps (1225.0 kbyte/s) [V] filefmt:2 fourcc:0x10000002 size:720x576 fps:25.00 ftime:=0.0400 ========================================================================== Opening audio decoder: [liba52] AC3 decoding with liba52 Using SSE optimized IMDCT transform AC3: 2.0 (stereo) 48000 Hz 192.0 kbit/s Using MMX optimized resampler AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000) Selected audio codec: [a52] afm:liba52 (AC3-liba52) ========================================================================== 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: [mpegpes] MPEG 1/2 Video passthrough VDec: vo config request - 720 x 576 (preferred csp: Mpeg PES) The selected video_out device is incompatible with this codec. Also try adding the scale filter, e.g. -vf spp,scale instead of -vf spp. VDecoder init failed :( Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG-1 or 2 (libmpeg2)) ========================================================================== VIDEO CODEC ID: 0 Building audio filter chain for 48000Hz/2ch/s16le -> 22050Hz/0ch/??... Building audio filter chain for 48000Hz/2ch/s16le -> 22050Hz/2ch/s16le... AUDIO CODEC ID: 15001, TAG: 55 Writing AVI header... [flv @ 0x7b9020]dimensions not set WRITTEN HEADER Program received signal SIGFPE, Arithmetic exception. [Switching to Thread 46912528759824 (LWP 17753)] 0x000000000052a447 in av_frac_add (f=0xaffe40, incr=51840000) at utils.c:3151 3151 f->val += num / den; (gdb) bt #0 0x000000000052a447 in av_frac_add (f=0xaffe40, incr=51840000) at utils.c:3151 #1 0x000000000052a645 in compute_pkt_fields2 (st=0xaffe10, pkt=0xb6) at utils.c:2349 #2 0x000000000052aa27 in av_interleaved_write_frame (s=0xaf0740, pkt=0x7fffffdf9840) at utils.c:2488 #3 0x00000000004e5b4e in write_chunk (stream=0xaff520, len=182, flags=0) at muxer_lavf.c:256 #4 0x0000000000409743 in main (argc=182, argv=0xb6) at mencoder.c:1210 I'm gonna see what I wan do to narrow down the problem, but I can say for sure that mencoder + lavf used to work (an 18-wheeler full of cola ahead!) Guillaume -- Reading doesn't hurt, really! -- Dominik 'Rathann' Mierzejewski

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Crash on video file
by Hanno Böck 27 Sep '05

27 Sep '05

I didn't get any reply on mplayer-users, so trying it here. Trying to play this file: http://images.apple.com/movies/us/hd_gallery/gl1800/480p/the_brothers_grimm… mplayer crashes with MPlayer interrupted by signal 11 in module: init_audio_codec Latest cvs version of mplayer, the crash seems to be in the audio stream, when disabling audio with -ac null, the video plays fine. gdb-output/coredump information at: http://www.schokokeks.org/~hanno/mplayer.bug -- Hanno Böck Blog: http://www.hboeck.de/ GPG: 3DBD3B20 Jabber: jabber(a)hboeck.de

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mplayer hangs with -vo yuv4mpeg in 1.0_pre7-r1
by Teun 26 Sep '05

26 Sep '05

Hello, I updated mplayer 1.0_pre6-r4 to 1.0_pre7-r1 and option -vo yuv4mpeg don't work anymore I make a pipe and started mplayer mkfifo stream.yuv mplayer <file.avi> -vo yuv4mpeg and mplayer "hangs" : processor activity almost 0% Is this a known problem or is this a bug ? Any help welcome ! Teun Kaptein

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[BUG] cannot use -nosound with multiple input files in mencoder
by compn 12 Sep '05

12 Sep '05

$ mencoder 1.avi 2.avi -nosound -ovc lavc -o test.avi MEncoder dev-Fedora-GS-CVS-050820-19:40-3.3.2 (C) 2000-2005 MPlayer Team CPU: Advanced Micro Devices Athlon Thunderbird (Family: 6, Stepping: 2) Detected cache-line size is 64 bytes CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0 Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx File not found: 'frameno.avi' Failed to open frameno.avi success: format: 0 data: 0x0 - 0x5f3000 AVI file format detected. VIDEO: [DIV3] 320x240 24bpp 25.000 fps 461.4 kbps (56.3 kbyte/s) VIDEO: [DIV3] 320x240 24bpp 25.000 fps 461.4 kbps (56.3 kbyte/s) [V] filefmt:3 fourcc:0x33564944 size:320x240 fps:25.00 ftime:=0.0400 No audio encoder (-oac) selected. Select one (see -oac help) or use -nosound. Exiting... oops, have to resubscribe to dev-eng... -compn

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liba52 downmixing
by Corey Hickey 07 Sep '05

07 Sep '05

I'm trying to figure out what happens to the lfe channel of AC3 5.1 audio when liba52 is requested to downmix. Is the lfe discarded? Is it mixed with the remaining channels? Is it reduced and then mixed? I've dome my best to determine this experimentally but with all the 5.1 tracks I have I can't hear a difference in my two (front) speakers when I switch between "-channels 5" and "-channels 6". Nor can I hear a difference between "-channels 6" and "-channels 6 -af pan=6:1:0:0:0:0:1:0:1:0:0:0:1": despite manually mixing the lfe channel with the front channels, there's so much bass in the front channels already that I can't hear the difference. Hence, my test is inconclusive. I can hear a difference when I amplify the the lfe channel by using "-af pan=6:1:0:0:0:0:2:0:1:0:0:0:2" (possible with a patch I just submitted to mplayer-dev-eng), but that can't help me when a52 has already downmixed and the lfe channel is no longer there. I can't understand liba52/downmix.c. I've looked at it for a while and haven't gotten anywhere. Can someone please enlighten me? Thanks, Corey

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[BUG] OSD timer not resetting with -fixed-vo
by Diego Biurrun 05 Sep '05

05 Sep '05

Hi! This one has been bugging me for an eternity, maybe somebody has a clue. Try the following: mplayer -fixed-vo movie1 movie2 where movie1 and movie2 have equal dimensions. Now press o to get the OSD timer, seek a bit and press > to switch to the next movie. You will notice that the timer does not reset properly, i.e. does not start at 00:00:00 again. mplayer -osdlevel 2 -fixed-vo movie1 movie2 works flawlessly, though. Any clues? Diego

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I need samples of matrix encoded audio
by Corey Hickey 04 Sep '05

04 Sep '05

I want to be able to document how to play matrix encoded audio files. Trouble is, I don't know how to play them myself, I don't know if I've ever seen such a file (or how to tell if I have one), and I can't seem to even find any with a google search. Pretty much all I know about these files is already documented in the section on -af surround in the mplayer man page. It could be that's all anybody needs to know, but I can't be sure without playing one myself. Can anyone give me some URLs to where I might download some samples? Thanks, Corey

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