April 2005 - ffmpeg-user - lists.ffmpeg.org

how ffmpeg deals with uncoded frames
by jaso4you＠yahoo.com 22 Apr '05

22 Apr '05

I am trying to calculate the psnr of an mpeg 4 video after transmitting it over the network. The video losses some frames after transmission. And when i am decoding it back to YUV the if wont decode the lost frames(VOP not coded). What happens if a frame is not coded(VOP not coded). Is the frame dropped or replaced by something? __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Spelling error
by kevinmb500＠gawab.com 22 Apr '05

22 Apr '05

Is this the right list to report a "bug"? This may be kinda picky, but there's a spelling error that's bugging me like crazy. In libavcodec, mpegvideo.c, line 3946: av_log(s->avctx, AV_LOG_INFO, "warning, cliping %d dct coefficents to % d..%d\n", overflow, minlevel, maxlevel); clipping is spelled "cliping"! This sometimes gets spat out when encoding as msmpeg4[v2] and wmv(1|2). This annoys me frequently, and will take about 2 seconds to fix! No excuses, am i right?

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error with --enable-shared ??
by reid.vail＠mci.com 22 Apr '05

22 Apr '05

I'm running a SuSE 9.2 implementation on an AMD X86_64 platform. I've had trouble compiling ffmpeg-0.4.9-pre1. After following this list for a while I saw notes about removing the --enable-shared switch. I did that, and it works fine. If it's OK to ask, what's the problem with --enable-shared, and what capabilities are lost by removing that switch? Thanks in advance. RV I got ffmpeg to compile with the following config: reid at linux:~/ffmpeg-0.4.9-pre1/ffmpeg-0.4.9-pre1> ./configure --prefix=/usr --enable-pthreads --enable-mp3lame --enable-a52 --enable-a52bin \ > enable-faac --enable-gpl Install prefix /usr Source path /home/Reid/ffmpeg-0.4.9-pre1/ffmpeg-0.4.9-pre1 C compiler gcc make make CPU unknown (generic) Big Endian no inttypes.h yes broken inttypes.h no gprof enabled no zlib enabled no mp3lame enabled yes vorbis enabled no faad enabled no faadbin enabled no faac enabled no a52 support yes a52 dlopened yes pp support no debug symbols yes optimize yes shared pp no Video hooking yes SDL support no risky / patent encumbered codecs yes Imlib2 support no freetype support yes Sun medialib support no pthreads support yes AMR-NB float support no AMR-NB fixed support no AMR-WB float support no License: GPL Creating config.mak and config.h ______________________________________________________________________ This e-mail has been scanned by MCI Managed Email Content Service, using Skeptic? technology powered by MessageLabs. For more information on MCI's Managed Email Content Service, visit http://www.mci.com. ______________________________________________________________________

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Re: Re: FLV & Audio
by ffmpeg＠gmail.com 22 Apr '05

22 Apr '05

Dear: Hi,this is the bug of mov.c The following patch will hack it! Please try again: ffmpeg -i pict005.mov -ar 44100 pict005.flv =================================================================== RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/mov.c,v retrieving revision 1.78 diff -u -r1.78 mov.c --- mov.c 30 Mar 2005 00:36:30 -0000 1.78 +++ mov.c 21 Apr 2005 13:33:35 -0000 @@ -1146,6 +1146,8 @@ st->codec.codec_id = CODEC_ID_PCM_S8; /* fall */ case CODEC_ID_PCM_U8: + if(st->codec.bits_per_sample == 16) + st->codec.codec_id = CODEC_ID_PCM_S16BE; st->codec.bit_rate = st->codec.sample_rate * 8; break; default: > Griff Hamlin wrote: > > Hi Mike, > > Thanks for the info. The command: > > ffmpeg -i pict005.mov -ar 44100 pict005.flv > > > > produces audio, so that's an improvement. But the audio > > is white noise. Here's the output > > from ffmpeg that produces the white noise audio: > > [...] > > > If I convert to a ".avi" file using: > > ffmpeg -i pict005.mov -ar 44100 pict005.avi > > > > I also get white noise audio. > > Are you sure that the original .mov file has valid audio and not white > noise? Maybe you were filming at the beach with crashing waves in the > background? > > -- > -Mike Melanson //---------------------------------------- "Like any human language, C++ provides a way to express concepts. If successful, this medium of expression will be significantly easier and more flexible than the alternatives as problems grow larger and more complex."

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FFMPEG Grabbing a single frame
by kai＠cmgwork.com 21 Apr '05

21 Apr '05

I'm trying to grab a single frame from a video. So far I am using the command: /usr/src/ffmpeg/ffmpeg -y -i videofile.wmv -an -r 1 -t 1 -s 640x480 frame.gif Which returns a very low-quality gif; Is there any way to get a higher-quality still (preferably in jpg format)? Thanks all, -Wes

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compile problem
by a21453＠alunos.det.ua.pt 21 Apr '05

21 Apr '05

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mencoder feeding ffserver
by mbalcells＠gmail.com 21 Apr '05

21 Apr '05

Hello, I'm trying ffserver and ffmpeg to stream TV from a capture card. Everything works fine except for ffmpeg consuming most CPU resources wich I think leads to small pauses in player reproduction. Anyway what I'd like to do is to use mencoder as an encoder to feed ffserver, I've tried the obvious wich is giving mencoder output file as http://localhost:8090/feed1.ffm but It looks like ffserver doesn't get anything. Has anybody tried this? thank's. -- Marc.

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FLV & Audio
by kai＠cmgwork.com 21 Apr '05

21 Apr '05

My bad, I was trying to strip out just the audio to see if the codec would encode mp3 data. Here is the >real< FLV command I tried to use: root at www root :) $ffmpeg -i 1.AVI -acodec mp3 1.flv ffmpeg version 0.4.9-pre1, build 4752, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-shared --enable-mp3lame --enable-pthreads built on Apr 19 2005 14:35:57, gcc: 3.2.3 20030502 (Red Hat Linux 3.2.3-49) Input #0, avi, from '1.AVI': Duration: 00:00:12.0, start: 0.000000, bitrate: 9288 kb/s Stream #0.0: Video: mjpeg, 640x480, 30.00 fps Stream #0.1: Audio: pcm_u8, 8000 Hz, mono, 64 kb/s Output #0, flv, to '1.flv': Stream #0.0: Video: flv, 640x480, 30.00 fps, q=2-31, 200 kb/s Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 360 q=0.0 Lsize= 1225kB time=12.0 bitrate= 836.5kbits/s video:1220kB audio:0kB global headers:0kB muxing overhead 0.462206% And here is the output of `ffmpeg -formats`: root at www root :) $ffmpeg -formats ffmpeg version 0.4.9-pre1, build 4752, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-shared --enable-mp3lame --enable-pthreads built on Apr 19 2005 14:35:57, gcc: 3.2.3 20030502 (Red Hat Linux 3.2.3-49) File formats: E 3g2 3gp2 format E 3gp 3gp format D 4xm 4X Technologies format D RoQ Id RoQ format DE ac3 raw ac3 DE alaw pcm A law format DE asf asf format E asf_stream asf format DE au SUN AU Format DE audio_device audio grab and output DE avi avi format E crc crc testing format D dts raw dts DE dv DV video format D dv1394 dv1394 A/V grab E dvd MPEG2 PS format (DVD VOB) D ea Electronic Arts Multimedia Format DE ffm ffm format D film_cpk Sega FILM/CPK format D flic FLI/FLC animation format DE flv flv format DE gif GIF Animation DE h261 raw h261 DE h263 raw h263 DE h264 raw H264 video format D idcin Id CIN format DE image image sequence DE image2 image2 sequence DE image2pipe piped image2 sequence DE imagepipe piped image sequence D ipmovie Interplay MVE format DE m4v raw MPEG4 video format D matroska Matroska file format DE mjpeg MJPEG video E mov mov format D mov,mp4,m4a,3gp,3g2 QuickTime/MPEG4 format E mp2 MPEG audio layer 2 D mp3 MPEG audio E mp4 mp4 format DE mpeg MPEG1 System format E mpeg1video MPEG video E mpeg2video MPEG2 video DE mpegts MPEG2 transport stream format D mpegvideo MPEG video E mpjpeg Mime multipart JPEG format DE mulaw pcm mu law format D nsv NullSoft Video format E null null video format DE nut nut format E psp psp mp4 format D psxstr Sony Playstation STR format DE rawvideo raw video format D redir Redirector format DE rm rm format E rtp RTP output format D rtsp RTSP input format DE s16be pcm signed 16 bit big endian format DE s16le pcm signed 16 bit little endian format DE s8 pcm signed 8 bit format D sdp SDP D shn raw shn E singlejpeg single JPEG image D sol Sierra SOL Format E svcd MPEG2 PS format (VOB) DE swf Flash format DE u16be pcm unsigned 16 bit big endian format DE u16le pcm unsigned 16 bit little endian format DE u8 pcm unsigned 8 bit format E vcd MPEG1 System format (VCD) D video4linux video grab D vmd Sierra VMD format E vob MPEG2 PS format (VOB) DE wav wav format D wc3movie Wing Commander III movie format D wsaud Westwood Studios audio format D wsvqa Westwood Studios VQA format DE yuv4mpegpipe YUV4MPEG pipe format Image formats (filename extensions, if any, follow): DE gif gif Codecs: D V 4xm D V D 8bps EA ac3 DEA adpcm_4xm DEA adpcm_adx DEA adpcm_ct DEA adpcm_ea DEA adpcm_ima_dk3 DEA adpcm_ima_dk4 DEA adpcm_ima_qt DEA adpcm_ima_smjpeg DEA adpcm_ima_wav DEA adpcm_ima_ws DEA adpcm_ms DEA adpcm_swf DEA adpcm_xa D A alac DEV D asv1 DEV D asv2 D V D camtasia D V D cinepak D V D cljr D V D cyuv DEV D dvvideo DEV D ffv1 DEVSD ffvhuff D A flac D V D flic DEVSD flv DEA g726 DEV D h261 DEVSDT h263 D VSD h263i EV h263p D V DT h264 DEVSD huffyuv D V D idcinvideo D V indeo3 D A interplay_dpcm D V D interplayvideo EV ljpeg D V D loco D A mace3 D A mace6 D V D mdec DEV D mjpeg D V D mjpegb DEA mp2 D A mp3 D A mp3adu D A mp3on4 DEVSDT mpeg1video DEVSDT mpeg2video DEVSDT mpeg4 D VSDT mpegvideo DEVSD msmpeg4 DEVSD msmpeg4v1 DEVSD msmpeg4v2 D V D msrle D V D msvideo1 D V D mszh DEV pam DEV pbm DEA pcm_alaw DEA pcm_mulaw DEA pcm_s16be DEA pcm_s16le DEA pcm_s8 DEA pcm_u16be DEA pcm_u16le DEA pcm_u8 DEV pgm DEV pgmyuv DEV png DEV ppm D V D qdraw D V D qpeg D V D qtrle DEV rawvideo D A real_144 D A real_288 D A roq_dpcm D V D roqvideo D V D rpza DEV D rv10 DEV D rv20 D A shorten D V D smc DEV snow D A sol_dpcm DEA sonic EA sonicls D V D sp5x DEV D svq1 D VSD svq3 D V theora D V D truemotion1 D V D ultimotion D V vc9 D V D vcr1 D A vmdaudio D V D vmdvideo D V vp3 D V D vqavideo D A wmav1 D A wmav2 DEVSD wmv1 DEVSD wmv2 D V wmv3 D V D wnv1 D A xan_dpcm D V D xan_wc3 D V D xl DEV D zlib Supported file protocols: file: pipe: udp: rtp: tcp: http: Frame size, frame rate abbreviations: ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif Motion estimation methods: zero(fastest) full(slowest) log phods epzs(default) x1 Note, the names of encoders and decoders dont always match, so there are several cases where the above table shows encoder only or decoder only entries even though both encoding and decoding are supported for example, the h263 decoder corresponds to the h263 and h263p encoders, for file formats its even worse -Wes -----Original Message----- From: ffmpeg-user-bounces at mplayerhq.hu [mailto:ffmpeg-user-bounces at mplayerhq.hu] On Behalf Of Mike Melanson Sent: Tuesday, April 19, 2005 4:42 PM To: FFMpeg user questions and RTFMs Subject: Re: [Ffmpeg-user] FLV & Audio Wes Widner wrote: > FFMPEG Output: > root at www root :) $ffmpeg -i 1.AVI -acodec mp3 1.mp3 > ffmpeg version 0.4.9-pre1, build 4752, Copyright (c) 2000-2004 Fabrice > Bellard > configuration: --enable-shared --enable-mp3lame --enable-pthreads > built on Apr 19 2005 14:35:57, gcc: 3.2.3 20030502 (Red Hat Linux > 3.2.3-49) > Input #0, avi, from '1.AVI': > Duration: 00:00:12.0, start: 0.000000, bitrate: 9288 kb/s > Stream #0.0: Video: mjpeg, 640x480, 30.00 fps > Stream #0.1: Audio: pcm_u8, 8000 Hz, mono, 64 kb/s > Output #0, mp2, to '1.mp3': > Stream #0.0: Audio: 0x0000, 8000 Hz, mono, 64 kb/s > Stream mapping: > Stream #0.1 -> #0.0 > Unsupported codec for output stream #0.0 I'm a little confused. Weren't you trying to convert to FLV? Why are you specifying a .mp3 output file? The basic, proper command line would be: ffmpeg -i 1.AVI 1.flv That will encode the audio and video using the default codecs assigned to the FLV muxer. Hope this helps... -- -Mike Melanson _______________________________________________ ffmpeg-user mailing list ffmpeg-user at mplayerhq.hu http://mplayerhq.hu/mailman/listinfo/ffmpeg-user

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Compile failure w/ gcc4 on Fedora Core 4 Test2 (libpostproc)
by thias＠spam.spam.spam.spam.spam.spam.spam.egg.and.spam.freshrpms.net 21 Apr '05

21 Apr '05

Hi, I'm trying to get ffmpeg compiled on what will become Fedora Core 4, and am facing this build failure for which I haven't been able to find any useful information : + cd FFMpeg-20050421 + LANG=C + export LANG + unset DISPLAY + export CFLAGS=-O3 + CFLAGS=-O3 + export CFLAGS ++ find . -name config.guess -o -name config.sub + ./configure --build=i686-redhat-linux-gnu --host=i686-redhat-linux-gnu -- target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec- prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc -- datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib -- libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com -- mandir=/usr/share/man --infodir=/usr/share/info --enable-mp3lame --enable- vorbis --enable-faad --enable-faac --enable-xvid --enable-pp --enable- shared-pp --enable-shared --enable-gpl --disable-strip libogg must be enabled to enable Vorbis Install prefix /usr Source path /usr/src/ rpm/BUILD/FFMpeg-20050421 C compiler gcc make make CPU x86 (generic) Big Endian no inttypes.h yes broken inttypes.h no MMX enabled yes Vector Builtins no gprof enabled no zlib enabled yes mp3lame enabled yes libogg enabled no vorbis enabled no theora enabled no faad enabled yes faadbin enabled no faac enabled yes xvid enabled yes x264 enabled no a52 support no a52 dlopened no dts support no pp support yes debug symbols yes strip symbols no optimize yes shared pp yes Video hooking yes SDL support yes Imlib2 support yes freetype support yes Sun medialib support no pthreads support no AMR-NB float support no AMR-NB fixed support no AMR-WB float support no AMR-WB IF2 support no network support yes IPv6 support yes License: GPL Creating config.mak and config.h [... all fine w/ warnings here ...] make -C libpostproc make[2]: Entering directory `/usr/src/rpm/BUILD/FFMpeg-20050421/libavcodec/ libpostproc' gcc -c -O3 -g -Wall -Wno-switch -O3 -I. -I.. -I'/usr/src/ rpm/BUILD/FFMpeg-20050421'/libavcodec -I../.. -o postprocess.o postprocess.c In file included from postprocess.c:645: postprocess_template.c: In function 'do_a_deblock_MMX': postprocess_template.c:2901: error: memory input 4 is not directly addressable postprocess_template.c: In function 'postProcess_MMX': postprocess_template.c:3510: warning: pointer targets in passing argument 6 of 'blockCopy_MMX' differ in signedness postprocess_template.c:3656: warning: pointer targets in passing argument 6 of 'blockCopy_MMX' differ in signedness postprocess_template.c:3757: warning: pointer targets in passing argument 4 of 'tempNoiseReducer_MMX' differ in signedness postprocess_template.c:3781: warning: pointer targets in passing argument 4 of 'tempNoiseReducer_MMX' differ in signedness make[2]: *** [postprocess.o] Error 1 make[2]: Leaving directory `/usr/src/rpm/BUILD/ FFMpeg-20050421/libavcodec/libpostproc' make[1]: *** [libavcodec.so] Error 2 make[1]: Leaving directory `/usr/src/rpm/BUILD/FFMpeg-20050421/ libavcodec' make: *** [lib] Error 2 At first, I thought that "memory input 4 is not directly addressable" error was linked to the new CFLAGS, which include "-Wp,-D_FORTIFY_SOURCE=2 -fexceptions", but overriding with plain "-O3" like above gives the same error. I've seen many people report success rebuilding ffmpeg with gcc4, but I guess that's because they don't enable post processing. Clues, pointers and fixes are very welcome :-) Matthias -- Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ Fedora Core release 3 (Heidelberg) - Linux kernel 2.6.11-1.14_FC3 Load : 1.28 1.11 0.92

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ffmpeg and ffserver help needed.
by kamarudin＠gmail.com 21 Apr '05

21 Apr '05

Hi all, 1st of all, im Linux noob. Im running Fedora Core 3. I try to put my camera onthe web by using ffserver and ffmpeg. I can see the aoutput using xawtv, so my camera was OK. As root, i run ffserver....and ffserver started. But when i run.... ... [root at xxx]# ffmpeg -vd '/dev/video0' -an http://localhost:8090/feed1.ffm ffmpeg version 0.4.9-pre1, build 4730, Copyright (c) 2000-2004 Fabrice Bellard configuration: --build=i686-redhat-linux-gnu --host=i686-redhat-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --extra-cflags=-O2 -g -pipe -m32 -march=i386 -mtune=pentium4 --enable-mp3lame --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-pp --enable-shared-pp --enable-shared --enable-gpl --disable-strip built on Nov 16 2004 11:18:55, gcc: 3.4.2 20041017 (Red Hat 3.4.2-6.fc3) [video4linux @ 0xb85428]Fatal: grab device does not support suitable format Could not find video grab device What going wrong?? Help me please :(. Thanx in advance. -- regards, kamarudin samsudin

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