April 2010 - ffmpeg-user - lists.ffmpeg.org

Dark_Shikari
by phil_rhodes＠rocketmail.com 17 Jun '10

17 Jun '10

Hi all. I'm posting this, not without some regret, at the behest of a few other people who felt the same way. What follows is an open letter regarding a situation we feel there's no other way to address. Begin quote This is an open letter from a group of ffmpeg users (not devs) who wish to complain about the behaviour of the user Dark_Shikari in the #ffmpeg IRC channel on freenode. We're complaining in this way for two reasons: 1) We have been unable to identify an individual in overall charge of the #ffmpeg channel or indeed the ffmpeg project in general. Nickserv reports that user md, founder of #ffmpeg, was last seen more than a year ago, so we're throwing this out in public in the hope that those who need to hear this will hear it. 2) The #ffmpeg channel is a prime contact point for ffmpeg users, particularly those seeking technical support. Channel operators there are, de facto, representatives of the project. Their behaviour reflects on the entire project and on Free and Open Source Software in general. We feel that Dark_Shikari's behaviour is too often that of the arrogant pedant, giving trivial, obvious or deliberately unhelpful responses to questions. For instance: <@Dark_Shikari> mik3: read the error! <@Dark_Shikari> [mpeg1video @ 0x84b5010]MPEG1/2 does not support 5/1 fps <mik3> i don't know what that means <@Dark_Shikari> I'm not sure what there is to understand Also: <Hfuy> Can I have AAC audio instead? it's what I sort of wanted anyway. <@Dark_Shikari> Hfuy: then tell it to encode aac. While we wish to give Dark_Shikari the benefit of the doubt, he takes this attitude so commonly that it is almost impossible to avoid the assumption that he is being deliberately petulant and pedantic. He is certainly being redundant and patronising. While we hesitate to attempt to psychoanalyse Dark_Shikari's attitude, it has to date been typified by sophistry connected to his status as a respected software engineer, and his presumed and wholly inaccurate assumption of our status somehow infinitely lower than that. To our knowledge this has been the situation for at least several years. We are aware of Dark_Shikari's contributions to the x264 project and its impact on high-quality FOSS encoding tools. We wish to take nothing away from him as a software engineer. However, we ask that: - Dark_Shikari realises that while he has expertise in at least one area, we have expertise, perhaps exceeding his, in others. We expect the same level of professionalism from him as we would any of our other colleagues in the field of digital media. - The controlling entities of #ffmpeg acknowledge that Dark_Shikari continues to be an extremely disruptive presence, regardless of his expertise, is unsuitable to be a representative of the ffmpeg project, and as such should not hold channel operator status. Yours: - Phil "Hfuy" Rhodes (phil at philrhodes.com ) - Michael "mahoney" Revelle (mrevelle at e-vergent.com) - Jan "Jan`" Hogevold (kerynasta at yahoo.com) - Two more users who do not wish to be named.

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ffmpeg-0.5 fails to compile
by george.tovrea＠baesystems.com 16 May '10

16 May '10

System: uname -m = sun4u uname -r = 5.10 uname -s = SunOS uname -v = Generic_118833-33 Configure command: ${HOME}/GCC_SOL/ffmpeg-0.5/configure \ --prefix=${HOME}/local/sol2 \ --enable-gpl \ --disable-ffplay \ --disable-ffserver \ --enable-pthreads \ --enable-libx264 \ --cross-prefix=${HOME}/local/sol2/bin/ \ --extra-ldflags="-L${HOME}/local/sol2/lib -L${HOME}/local/sol2/lib/gcc/sparc-sun-solaris2.10/4.4.0" Error: /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/version.sh "/net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5" version.h /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/version.sh: syntax error at line 8: `OLD_REVISION=$' unexpected /net/whistler/auto/users/tovrea/local/sol2/bin/gcc -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I. -I"/net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -std=c99 -D__EXTENSIONS__ -fomit-frame-pointer -mcpu=ultrasparc -mtune=ultrasparc -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wtype-limits -Wundef -O3 -fno-math-errno -fno-signed-zeros -c -o libavdevice/alldevices.o /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c: In function 'avdevice_register_all': /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:47: error: 'CONFIG_ALSA_MUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:47: error: (Each undeclared identifier is reported only once /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:47: error: for each function it appears in.) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:47: error: 'CONFIG_ALSA_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:48: error: 'CONFIG_AUDIO_BEOS_MUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:48: error: 'CONFIG_AUDIO_BEOS_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:49: error: 'CONFIG_BKTR_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:50: error: 'CONFIG_DV1394_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:51: error: 'CONFIG_OSS_MUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:51: error: 'CONFIG_OSS_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:52: error: 'CONFIG_V4L2_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:53: error: 'CONFIG_V4L_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:54: error: 'CONFIG_VFWCAP_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:55: error: 'CONFIG_X11_GRAB_DEVICE_DEMUXER' undeclared (first use in this function) /net/whistler/auto/users/tovrea/GCC_SOL/ffmpeg-0.5/libavdevice/alldevice s.c:58: error: 'CONFIG_LIBDC1394_DEMUXER' undeclared (first use in this function) make: *** [libavdevice/alldevices.o] Error 1 Comment: ../libavdevice/Makefile contains: # input/output devices OBJS-$(CONFIG_ALSA_DEMUXER) += alsa-audio-common.o alsa-audio-dec.o OBJS-$(CONFIG_ALSA_MUXER) += alsa-audio-common.o alsa-audio-enc.o OBJS-$(CONFIG_BKTR_DEMUXER) += bktr.o OBJS-$(CONFIG_DV1394_DEMUXER) += dv1394.o OBJS-$(CONFIG_OSS_DEMUXER) += oss_audio.o OBJS-$(CONFIG_OSS_MUXER) += oss_audio.o OBJS-$(CONFIG_V4L2_DEMUXER) += v4l2.o OBJS-$(CONFIG_V4L_DEMUXER) += v4l.o OBJS-$(CONFIG_VFWCAP_DEMUXER) += vfwcap.o OBJS-$(CONFIG_X11_GRAB_DEVICE_DEMUXER) += x11grab.o # external libraries OBJS-$(CONFIG_LIBDC1394_DEMUXER) += libdc1394.o OBJS-$(CONFIG_AUDIO_BEOS_DEMUXER) += beosaudio.o OBJS-$(CONFIG_AUDIO_BEOS_MUXER) += beosaudio.o Bill Tovrea BAE Systems 16550 West Bernardo Drive San Diego, CA 92127 Telephone: (858) 592-5292 Pager: (888) 971-4964 E-mail: George.Tovrea at baesystems.com

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Best H.264 encoding settings for source quality preservation
by stas.oskin＠gmail.com 05 May '10

05 May '10

Hi. What would be the best H.264 trans-coding settings to best preserve the source (MPEG-4) video quality, while still reducing the required bandwidth? Is there any FFMPEG parameter which will just trans-code to H.264 while keeping same quality? I will be doing a 1-pass encoding coming from a live source. Thanks!

4 5

Multiple output files
by ferenc.deak＠adactus.no 03 May '10

03 May '10

Hi all, I have the following question: I have one input file, and I want to generate three output files from it, but the only difference between these files is only the bitrate (in the command line). So, right now I call ffmpeg three times. I would like to ask is it possible to make one ffmpeg call to generate three files? Thanks, ferenc

7 11

Which are good parameters for encoding high quality FLV ?
by amitkumarmangal＠gmail.com 01 May '10

01 May '10

Hi, Please tell me which are good parameters to convert from any video format to high quality flv with reduce size or atleast same size. Thanks & Regards Amit

2 1

Compilation of ffmpeg with proyect in the same build
by rommelmeza＠gmail.com 01 May '10

01 May '10

Hi my name is Rommel im want to know if can be possible to compile ffmpeg with other codecs like lame in the same build. Right now i have installed lame and when i build ffmpeg with --enable-libmp3lame i have a binary of ffmpeg but if i uninstall lame. the binary of ffmpeg doesnt work more. If someone know how i compile the two proyecto in the same build i apprecite very much.

2 2

help in optimize command
by amitkumarmangal＠gmail.com 30 Apr '10

30 Apr '10

Hi Everyone i am using below command to convert any media to flv and mov i want to reduce size and quality shouldbe sama as original video my command reduce size but also it degrade quality please any body help me to optimize command so that quality shouldbe same. ffmpeg -i test.wm -flags +loop -cmp +chroma -deblockalpha 0 -deblockbeta 0 -c rf 24 -bt 256k -refs 1 -coder 0 -subq 5 -partitions +parti4x4+parti8x8+partp8x8 -g 250 -keyint_min 25 -level 30 -qmin 10 -qmax 51 -trellis 2 -sc_threshold 40 -i_qfactor 0.71 -ab 64k -ar 44100 -ac 2 test.flv

3 2

deinterlacing DCS HQRII videos
by mikko.rapeli＠iki.fi 30 Apr '10

30 Apr '10

Hello, I have a bunch of videos shot with an analog helmet camera and a DCS HQRII recorder: http://www.dogcamsport.co.uk/hqr2-micro-pocket-dvr-2.htm To edit the clips in kdenlive with a bunch of other progressive material I'd like to deinterlace the clips, but ffmpeg is not succeeding. Here a sample clip: http://mcfrisk.kapsi.fi/media/2010/dcs_hqrii_sample.mpg ffmpeg -i: Input #0, mpeg, from 'dcs_hqrii_sample.mpg': Duration: 00:00:13.47, start: 0.220000, bitrate: 6077 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 16:15 DAR 4:3], 5500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, 2 channels, s16, 224 kb/s I tried ffmpeg with Debian unstable from debian-multimedia.org and latest git but both fail to deinterlace. Previously with other DV cameras the -deinterlace option to ffmpeg has done the trick but not now. $ ./ffmpeg_g -i dcs_hqrii_sample.mpg -target pal-dv -deinterlace test01.dv FFmpeg version git-ad188cb, Copyright (c) 2000-2010 the FFmpeg developers built on Apr 28 2010 21:04:18 with gcc 4.4.3 configuration: --prefix=/usr --extra-cflags='-Wall -g ' --enable-static --disable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libtheora --enable-libdc1394 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libschroedinger --disable-encoder=libschroedinger --enable-avfilter-lavf --enable-libopenjpeg --enable-version3 --cpu=i686 --enable-ffmpeg --disable-ffplay --shlibdir=/usr/lib/i686/cmov libavutil 50.14. 0 / 50.14. 0 libavcodec 52.66. 0 / 52.66. 0 libavformat 52.61. 0 / 52.61. 0 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.10. 0 / 0.10. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mpeg @ 0x9679bc0]max_analyze_duration reached Input #0, mpeg, from 'dcs_hqrii_sample.mpg': Duration: 00:00:13.47, start: 0.220000, bitrate: 6077 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x576 [PAR 16:15 DAR 4:3], 5500 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, 2 channels, s16, 224 kb/s File 'test01.dv' already exists. Overwrite ? [y/N] y Output #0, dv, to 'test01.dv': Metadata: encoder : Lavf52.61.0 Stream #0.0: Video: dvvideo, yuv420p, 720x576 [PAR 16:15 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding [mpeg2video @ 0x967aed0]ac-tex damaged at 29 3513.03 bitrate=28729.3kbits/s [mpeg2video @ 0x967aed0]Warning MVs not available [mpeg2video @ 0x967aed0]concealing 45 DC, 45 AC, 45 MV errors [mp2 @ 0x967bb10]incomplete frame Error while decoding stream #0.1 [dvvideo @ 0x967b490]Can't process DV frame #334. Insufficient audio data or severe sync problem. frame= 336 fps= 54 q=0.0 Lsize= 46969kB time=13.39 bitrate=28731.2kbits/s video:47250kB audio:2511kB global headers:0kB muxing overhead -5.611322% Partial result file is here: http://mcfrisk.kapsi.fi/media/2010/test01.dv Looking at the result file frame by frame I see that it is not deinterlaced. Any idea on how to get this kind of files deinterlaced? -Mikko

2 4

Newbie Question: 3gp to 3gp conversion failure
by nitin.bodke＠gmail.com 30 Apr '10

30 Apr '10

Hi All I am newbie to ffmpeg. I am trying to extract the codecs used in my video. For this I am using following command. ffmpeg -i input.3gpp -vcodec copy -acodec copy -async 1 -y output.3gpp But this command gives following error: <snip> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'videoJob.3gpp': Duration: 00:00:10.41, start: 0.000000, bitrate: 75 kb/s Stream #0.0(und): Audio: libopencore_amrnb, 8000 Hz, mono, s16 Stream #0.1(und): Video: h263, yuv420p, 176x144 [PAR 12:11 DAR 4:3], 29.97 tbr, 1k tbn, 29.97 tbc Unable to find a suitable output format for 'output.3gpp' </snip> Status of this command is 1 i.e. failure. Can you please correct what's wrong with above command? Thanks, Nitin.

2 1

Where do i get the older builds/binaries for ffmpeg
by 2komal＠gmail.com 30 Apr '10

30 Apr '10

Hi, I need to have a look at multiple older versions of Ffmpeg. On the download link i can download only the latest version. Could someone help me get the older binaries for this tool. thanks, Komal

1 0