December 2005 - ffmpeg-devel - lists.ffmpeg.org

time for a release?
by diego＠biurrun.de 24 Feb '06

24 Feb '06

Folks, it's been a while since the last release and since then there has been a lot of development and many new features have been added to FFmpeg along with fixes for a good deal of bugs. In short, I think it's time to make a new release. Are there any important open bugs and/or patches that should be taken care of first? Otherwise I would say we single out a CVS snapshot soon and make a release out of it. Opinions? Diego P.S.: If there are any pending build-system or documentation related patches, please point me to them.

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Question about FAQ 1.3
by lucabe72＠email.it 24 Feb '06

24 Feb '06

Hi all, http://ffmpeg.sourceforge.net/faq.html#SEC4 says: "Currently, the grabbing stuff does not handle synchronisation correctly. You are free to correct it. A fix is planned." Is this still true, or is it just an old FAQ that has not been updated? I sporadically use ffmpeg or libavformat to grab audio and video, but I do not remember seeing big synch problems recently... But maybe this is just a "long-term stability" issue and I am grabbing for a too short time? If the bug is still there, can someone explain how to reproduce it (and give me a hint about what is wrong... I looked at the code, and everything seems to be correct)? Is the bug in libavformat, or in ffmpeg.c? If someone can give me some hints and if I am able to reproduce the problem, I am willing to fix it. Otherwise, maybe it's time to update the FAQ. Thanks, Luca -- _____________________________________________________________________________ Copy this in your signature, if you think it is important: N O W A R ! ! ! -- Email.it, the professional e-mail, gratis per te: http://www.email.it/f Sponsor: In cambio di 10 minuti del tuo tempo per esprimere la tua opinione, * Shopmon dona 1 Euro ai progetti di solidariet? di AMREF ed UNICEF Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=3669&d=27-10

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Question about libavutil
by lucabe72＠email.it 24 Feb '06

24 Feb '06

Hi all, what's the rule of libavutil? Is it intended to contain all the common utility functions shared between libavcodec and libavformat? If yes, why are the av_*alloc() functions in libavcodec and not in libavutil? Would a patch that moves the av_*alloc() functions in libavutil be accapted? Same questions for av_log() & friends... I am asking because I have an application which only uses libavformat, and I'd like to compile it without linking libavcodec. But that's currently not possible because of av_alloc(), av_log(), and similar functions. Thanks, Luca -- _____________________________________________________________________________ Copy this in your signature, if you think it is important: N O W A R ! ! !

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libavcodec help
by dionoea＠via.ecp.fr 23 Feb '06

23 Feb '06

On Tue, Nov 01, 2005, Michael Niedermayer wrote: > none > > just write something like > > switch(opt->type){ > case FF_OPT_TYPE_FLAGS: str="<flags>"; break; > ... > } > av_log(..., str, ...) > > or > > static const char *str[]= { > [FF_OPT_TYPE_FLAGS] = "<flags>", > ... > } > av_log(..., str[opt->type], ...) The problem with this method is that it doesn't look nice (at least it doesn't look as nice as the previous method) because you won't be able to specify a field width concerning the option's name + its type. -- Antoine Cellerier dionoea (hope i didn't messup in the reply address this time)

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"error, non monotone timestamps" when extracting audio from 3gp
by julian＠sektor37.de 19 Feb '06

19 Feb '06

Hi, I have a problem with ffmpeg from CVS. This is probably a regression since it worked better with ffmpeg-0.4.9-pre1. I'm trying to extract raw AMR audio data from a 3GP file. This is the command line I am using: ffmpeg -y -i test.3gp -vn -acodec copy out.amr Using ffmpeg-0.4.9-pre1 (configured with --enable-mp3lame and --enable-amr_nb) this works fine and I end up with the correct data (20310 bytes of audio data). But using today's ffmpeg from CVS (same configuration options, same gcc version, same mp3lame and AMR codec versions), or when using Debian unstable's latest ffmpeg package, I get the following errors (the full log files are attached): error, non monotone timestamps 1355254 >= 1355254 (CVS) error, non monotone timestamps 1353600 >= 1353600 (Debian/unstable) And in both cases I end up with only 762 bytes of bogus audio data. What may be interesting is that regarding the video stream in the 3GP file, it's the other way around: ffmpeg 0.4.9-pre1 only extracts 27 frames from the video file, while ffmpeg CVS correctly extracts 98 frames. In other words, using 0.4.9-pre1 I can extract the audio, but not the video data; using the latest version, I can extract video but no audio. This suggests that the two issues are related, maybe the fix for the video problem introduced a regression? My question is, is there any way to make both video and audio extraction work correctly at the same time? I would like to avoid using two different ffmpeg binaries, one for each purpose. Please let me know if you need the movie sample I have been using. I haven't uploaded it yet because it is copyrighted content and I would have to get permission first. If there's anything else I can do, like enabling debug information or adding output statements to the code, please let me know. Thanks in advance, Julian Scheid

3 3

Intel IPP
by the_ether＠lycos.co.uk 06 Feb '06

06 Feb '06

Has anyone tried using the Intel Performance Primitives (IPP) libraries? I'm interested to know: - whether you saw any speed improvement - how to integrate them I just tried replacing the ffmpeg fDCT routine with the Intel equivalent but had linker problems. I am using the Windows version of IPP and compiling with gcc 3.4.2 with MinGW. g.

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[PATCH] from DivX, Part 7: MSVC fixes
by slhomme＠divxcorp.com 05 Feb '06

05 Feb '06

These are only the "soft" part of the MSVC fixes. That means I didn't include parts I know wouldn't make it, like the named fields in structures.

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[PATCH] BMP decoder fixes + libavcodec version number bump
by gbazin＠altern.org 02 Feb '06

02 Feb '06

Hi, The main BMP decoder fix is to handle the requirement that lines are padded to have a size that is a multiple of 4. Cheers, -- Gildas

3 2

Patches for OS/2 - os2.patch [1/1]
by paulat＠smedleydot.info 02 Feb '06

02 Feb '06

Hi All, Attached patches add threading support for OS/2 - as well as enabling the test for freetype2, and allowing network support. Not sure what freetype2 and network support add - but they're now there ;) -- Cheers, Paul. begin 666 os2.patch M9&EF9B`M=2`M<B!C=G,O8V]N9FEG=7)E('!A=&-H960O8V]N9FEG=7)E#0HM M+2T at 8W9S+V-O;F9I9W5R90E-;VX at 3V-T("`S(#(P.C,S.C0X(#(P,#4-"BLK M*R!P871C:&5D+V-O;F9I9W5R90E4=64 at 3V-T("`T(#$R.C0W.C`R(#(P,#4- M"D!`("TS-S at L-R`K,S<X+#8 at 0$`-"B!V-&P](FYO(@T*(&%U9&EO7V]S<STB M;F\B#0H at 9'8Q,SDT/2)N;R(-"BUN971W;W)K/2)N;R(-"B!F9G-E<G9E<CTB M;F\B#0H@=FAO;VL](FYO(@T*(&]S,CTB>65S(@T*0$`@+3$P-C<L-R`K,3`V M-BPW($!`#0H at 14]&#0H@#0H at 9G)E971Y<&4R/6YO#0HM:68@=&5S="`B>"1T M87)G971O<R(@(3T@(GA"94]3(B`F)B!T97-T("(D;W,R(B`A/2`B>65S(CL@ M=&AE;@T**VEF('1E<W0@(G at D=&%R9V5T;W,B("$](")X0F5/4R([('1H96X- M"B`@(&EF("AF<F5E='EP92UC;VYF:6<@+2UV97)S:6]N*2`^+V1E=B]N=6QL M(#(^)C$@.R!T:&5N#0H@("`@(&EF("1C8R`M;R`D5$U012`D5$U00R!@9G)E M971Y<&4M8V]N9FEG("TM8V9L86=S8"!@9G)E971Y<&4M8V]N9FEG("TM;&EB M<V`@(#X at +V1E=B]N=6QL(#(^)C$@.R!T:&5N#0H@("`@("`@9G)E971Y<&4R M/7EE<PT*0$`@+3$V,#4L-B`K,38P-"PY($!`#0H@:68@=&5S="`B)&]S,B(@ M/2`B>65S(B`[('1H96X-"B`@(&5C:&\@(B-D969I;F4 at 0T].1DE'7T]3,B`Q M(B`^/B`D5$U02`T*("`(a)96-H;R`B0T].1DE'7T]3,CUY97,B(#X^(&-O;F9I M9RYM86L-"BL@(&5C:&\@(DA!5D5?3U,R5$A214%$4SUY97,B(#X^(&-O;F9I M9RYM86L-"BL@(&5C:&\@(B-D969I;F4 at 2$%615]/4S)42%)%0413(#$B(#X^ M("1435!(#0HK("!E8VAO("(C9&5F:6YE($A!5D5?5$A214%$4R`Q(B`^/B`D M5$U02`T*(&9I#0H@#0H@:68@=&5S="`B)%1!4D=%5%]/4R(@/2`B4W5N3U,B M(#L@=&AE;@T*9&EF9B`M=2`M<B!C=G,O;&EB879C;V1E8R]-86ME9FEL92!P M871C:&5D+VQI8F%V8V]D96,O36%K969I;&4-"BTM+2!C=G,O;&EB879C;V1E M8R]-86ME9FEL90E-;VX at 4V5P(#(V(#$Y.C,U.C$R(#(P,#4-"BLK*R!P871C M:&5D+VQI8F%V8V]D96,O36%K969I;&4)36]N($]C="`(a),R`R,#HP.#HT."`R M,#`U#0I`0"`M,C`S+#8@*S(P,RPQ,2!`0`T*($]"2E,K/2!W,S)T:')E860N M;PT*(&5N9&EF#0H@#0HK:69E<2`H)"A(059%7T]3,E1(4D5!1%,I+'EE<RD- M"BM/0DI3*ST@;W,R=&AR96%D+F\-"BME;F1I9 at T**PT**PT*(&EF97$@*"0H M2$%615]"14]35$A214%$4RDL>65S*0T*($]"2E,K/2!B96]S=&AR96%D+F\- M"B!E;F1I9 at T*3VYL>2!I;B!P871C:&5D+VQI8F%V8V]D96,Z(&]S,G1H<F5A M9"YC#0ID:69F("UU("UR(&-V<R]L:6)A=F9O<FUA="]T8W`N8R!P871C:&5D M+VQI8F%V9F]R;6%T+W1C<"YC#0HM+2T at 8W9S+VQI8F%V9F]R;6%T+W1C<"YC M"4UO;B!-87D@(#D@,C`Z,3 at Z,3(@,C`P-0T**RLK('!A=&-H960O;&EB879F M;W)M870O=&-P+F,)36]N($]C="`@,R`R,#HP-CHS,"`R,#`U#0I`0"`M,C$L M-R`K,C$L-R!`0`T*("-I;F-L=61E(#QS>7,O='EP97,N:#X-"B`C:6YC;'5D M92`\<WES+W-O8VME="YH/@T*("-I;F-L=61E(#QN971I;F5T+VEN+F@^#0HM M(VEF(&1E9FEN960H7U]"14]37U\I#0HK(VEF(&1E9FEN960H7U]"14]37U\I M('Q\(&1E9FEN960H7U])3DY/5$5+7TQ)0D-?7RD-"B!T>7!E9&5F(&EN="!S G;V-K;&5N7W0[#0H@(V5N9&EF#0H@(VEF;F1E9B!?7T)%3U-?7PT* ` end

2 1

[PATCH] from DivX, Part 2: Multifile source
by slhomme＠divxcorp.com 29 Jan '06

29 Jan '06

This patch adds a new protocol input to do the simulation of file concatenation (not always available when you use the ffmpeg library). It should work on other OS too. The URL to use is : "multi:<file1>*<file2>*" It's mostly used for merging MPEG (VOB) files on the fly.

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