July 2005 - MPlayer-advusers - lists.mplayerhq.hu

PATCH: FPE in demux_audio.c
by Andrew A. Gill 28 Jul '05

28 Jul '05

--- BUG DESCRIPTION --- There is a division by zero problem (two, actually) in main/libmpdemux/demux_audio.c. When playing MP3 or FLAC, it attempts to divide by sh_audio->i_bps which is unset. This doesn't happen when using a container, so presumably bps is defined by the container. For some reason, this doesn't cause FPE on IEEE 754-conformant processors (e.g. x86, unlike DEC Alpha). --- BUG DESCRIPTION --- --- RESOLUTION --- A patch is attached. The patch resolves the issue quite well by adding a switch-case statement to the affected lines. It is, however, evaluated every time that the audio buffer is filled, so more efficient solutions may be preferable. Also, I suggest that the code be checked for arithmetic traps. (if there's a test suite, I'd be happy to do it) --- RESOLUTION --- -- |Andrew A. Gill |I posted to Silent-Tristero and| |<superluser(a)frontiernet.net> |all I got was this stupid sig! | |alt.tv.simpsons CBG-FAQ author | | | (Report all obscene mail to Le Maitre Pots)| |Yet: <http://www.needsfoodbadly.com> Temporary sig: -- Yay advusers!

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Bug with Matroska format and Real Video 9/10 codec
by Jean-Noël Rivasseau 27 Jul '05

27 Jul '05

Hello. I am using Mac OS X 10.4, the latest binary from the separate mplayerosx sourceforge project (dated May 20). I have installed the latest codecs from Real by downloading their nightly build. I can't play a Matroska file containing a video track encoded with RV40. It crashes everytime. I have tried MANY samples from the mplayer site, all Real videos work fine when they are in .avi, but the ones in .mkv always make mplayer crash. I have even extracted the video track using mkvextract, and once extracted, mplayer plays it without problems, so the bug is clearly related to how Mplayer handles .mkv files. Other .mkv files using codecs such as DivX / XVid work fine though... Any help on that? What can I do to help more? (I am going to download and build the CVS version of Mplayer soon, but I think it's a bit of work to build it under OS X...) Jean-Noël

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the java video formats so far.
by compn 22 Jul '05

22 Jul '05

here are the four java video formats i've found and posted to mplayer-advusers hopefully someone will get them all working in mplayer or another gpl software one day :) Mike's RE blog is interesting to read, just wish i could help more. VX30 http://www.vx30.com/ official website http://information.networkessence.net/mxs/vx30/analysis.html stolen code screenshots, analysis http://www.tliquest.net/ryan/cherryos/vx30/ hex dump and investigation of stolen gpl code in vx30 http://www.indy.org/video/Music/ for a sample html file, vx30 and meta file, and the required player Eyewonder html, a PSA about booster seats: http://cdn.eyewonder.com/100125/400136/400907/designTheme.html?videoname=bo… with the java applet: http://cdn.eyewonder.com/100125/400136/400907/rel.jar and video/audio files: http://cdn.eyewonder.com/100125/400136/400907/boosterseated_anthemdummy_30-… http://cdn.eyewonder.com/100125/400136/400907/boosterseated_anthemdummy_30-… vendor site: http://www.eyewonder.com some japanese name, possibly vplayer orig url: http://www.actonbb.com/contents/health/0501shape1_health/ movie files: www.actonbb.com/actonbb/0501shape1/0501shape1_01.w1 www.actonbb.com/actonbb/0501shape1/0501shape1_01.w0 java decoder files: www.actonbb.com/player/v38081/vplayer.jar www.actonbb.com/player/v38081/vplayer.cab and the emblaze format, sample here http://www.rxdesign.com/portfolio/video/emblaze/ vendor site: http://www.emblaze.com/serve/products/pc_players.asp

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VX30 java player/video format
by compn 17 Jul '05

17 Jul '05

http://www.vx30.com/ official website http://information.networkessence.net/mxs/vx30/analysis.html stolen code screenshots, analysis http://www.tliquest.net/ryan/cherryos/vx30/ hex dump and investigation of stolen gpl code in vx30 just another java format to add to the list.

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Re: [MPlayer-advusers] VX30 java player/video format
by Diego Biurrun 16 Jul '05

16 Jul '05

On Fri, Jul 15, 2005 at 02:31:42PM -0600, Mike Melanson wrote: > Diego Biurrun wrote: > > > >On Fri, Jul 15, 2005 at 03:54:01PM -0400, compn wrote: > > > >>http://www.vx30.com/ > >>official website > >> > >>http://information.networkessence.net/mxs/vx30/analysis.html > >>stolen code screenshots, analysis > >> > >>http://www.tliquest.net/ryan/cherryos/vx30/ > >>hex dump and investigation of stolen gpl code in vx30 > >> > >>just another java format to add to the list. > > Thanks. Do we have any samples for the archive? Dunno, Compn? Diego

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encoding a .3gp file
by Raphael Clifford 16 Jul '05

16 Jul '05

Hi, I have been trying to make a .3gp file for my mobile phone. I want to use mencoder instead of ffmpeg but am having a problem with the amr audio codecs it seems. My experimental command line (without any of the bitrate/fps etc. arguments needed eventually) is /usr/local/bin/mencoder stream.dump -oac lavc -ovc lavc -lavcopts vcodec=h263p:acodec=amr_nb -of lavf -o movie.3gp which gives the error " Couldn't find wav tag for specified codec, exit " If I change to -oac pcm then the error dissapears. I compiled mplayer/mencoder from cvs and included all the amr stuff and libavformat. I am also able to play a sample .3gp file made using ffmpeg which implies that amr_nb is indeed compiled into mplayer correctly at least. Here is the output of mplayer -v test.3gp so you can see what I am trying to reproduce. http://pastebin.com/314426 What could be the problem? Is amr_nb encoding not in fact supported in mencoder? Is -of lavf not working? Raphael P.S. Here is the complete output of /usr/local/bin/mencoder -v stream.dump -oac lavc -ovc lavc -lavcopts vcodec=h263p:acodec=amr_nb -of lavf -o movie.3gp -bash-2.05b$ /usr/local/bin/mencoder -v stream.dump -oac lavc -ovc lavc -lavcopts vcodec=h263p:acodec=amr_nb -of lavf -o movie.3gp MEncoder dev-CVS-050715-15:59-3.3.2 (C) 2000-2005 MPlayer Team CPU: Intel Pentium 4/Xeon/Celeron Foster (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 for x86 CPU with extensions: MMX MMX2 SSE SSE2 86 audio & 200 video codecs File not found: 'frameno.avi' Failed to open frameno.avi init_freetype get_path('font/font.desc') -> '/home/raph/.mplayer/font/font.desc' font: can't open file: /home/raph/.mplayer/font/font.desc font: can't open file: /usr/local/share/mplayer/font/font.desc Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay [file] File size is 74010624 bytes STREAM: [file] stream.dump STREAM: Description: File STREAM: Author: Albeu STREAM: Comment: based on the code from ??? (probably Arpi) success: format: 0 data: 0x0 - 0x4695000 Checking for YUV4MPEG2 ASF_check: not ASF guid! Checking for Nullsoft Streaming Video Checking for NuppelVideo Checking for REAL REAL file format detected. real: Header size: 18 real: Header object version: 0 real: File version: 0 Chunk: PROP (504f5250) (size: 0x32, offset: 0x12) First index chunk offset: 0x0 First data chunk offset: 0x171 Flags (2): [perfect play (more buffers)] Chunk: CONT (544e4f43) (size: 0x15, offset: 0x44) Chunk: MDPR (5250444d) (size: 0x99, offset: 0x59) Found new stream (id: 0) Stream description: Audio Stream Stream mimetype: audio/x-pn-realaudio ==> Found audio stream: 0 Found audio stream! version: 4 header size: 57 frame_size: 304 sub_packet_size: 0 samplerate: 8000, channels: 1 skip_str: 4 bytes skipped read_str: 4 bytes read ======= WAVE Format ======= Format Tag: 26995 (0x6973) Channels: 1 Samplerate: 8000 avg byte/sec: 8500 Block align: 304 bits/sample: 16 cbSize: 10 Unknown extra header dump: [0] [0] [6] [0] [1] [0] [30] [1] [0] [0] =========================== ### skipping 2 bytes of codec info Chunk: MDPR (5250444d) (size: 0x75, offset: 0xf2) Found new stream (id: 1) Stream description: Video Stream Stream mimetype: video/x-pn-realvideo ==> Found video stream: 1 video fourcc: RV30 (30335652) H.263 ID: 30203002 unknown id: 30203002 ### skipping 0 bytes of codec info Chunk: DATA (41544144) (size: 0x46076a9, offset: 0x167) Packets in file: 110091 Auto-selected RM audio ID = 0 Auto-selected RM video ID = 1 VIDEO: RV30 [30203002,000A9030] 320x240 (aspect 0.00) 15.00 fps VIDEO: [RV30] 320x240 24bpp 15.000 fps 0.0 kbps ( 0.0 kbyte/s) [V] filefmt:11 fourcc:0x30335652 size:320x240 fps:15.00 ftime:=0.0667 ========================================================================== Opening audio decoder: [realaud] RealAudio decoder opening shared obj '/usr/lib/codecs/sipr.so.6.0' Audio codec: [1] 8.5 Kbps Voice Audio bitrate: 8.500 kbit/s (1063 bps) dec_audio: Allocating 1824 bytes for input buffer. dec_audio: Allocating 128000 + 65536 = 193536 bytes for output buffer. AUDIO: 8000 Hz, 1 ch, s16le, 8.5 kbit/6.64% (ratio: 1063->16000) Selected audio codec: [rasipr] afm:realaud (RealAudio Sipro) ========================================================================== OK, exit ALLOCATED STREAM N. 1, type=0 Opening video filter: [expand osd=1] Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1 ========================================================================== Opening video decoder: [realvid] RealVideo decoder realvideo codec id: 0x30203002 sub-id: 0x000A9030 opening shared obj '/usr/lib/codecs/drvc.so' INFO: RealVideo codec init OK! Selected video codec: [rv3040] vfm:realvid (Linux RealPlayer 10 RV30/40 decoder) ========================================================================== VIDEO CODEC ID: 5 ALLOCATED STREAM N. 2, type=1 Building audio filter chain for 8000Hz/1ch/s16le -> 0Hz/0ch/??... [libaf] Adding filter dummy [dummy] Was reinitialized: 8000Hz/1ch/s16le [dummy] Was reinitialized: 8000Hz/1ch/s16le Couldn't find wav tag for specified codec, exit Exiting... P.P.S. Crossposted to mencoder-users although I am told now that that mailing list is moribund.

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