March 2008 - ffmpeg-user - lists.ffmpeg.org

.m4a to .flv - image/video fails
by nreddig＠ptd.net 31 Mar '12

31 Mar '12

Hi all, I have greatly appreciated the information I have already gleaned from reading this forum. However I still can not solve my current problem. I am trying to convert from .m4a to .flv. These are podcast files (.m4a) built in garage band. Pictures were added as well and we would like to use this format to create weekly announcements because Garage Band is so easy for our non-technically oriented staff. Using ffmpeg the audio converts just fine but the "video" is not right. I guess it's because these files include chapter data not actual video. However when I convert it to any format the images fly through at different rates, then it seems to get stuck on a picture in the middle. The format I would like to convert to is flash so that I can easy display multiple announcement files using a flash player. I can convert .mov to .flv no problem. Converting .m4a to .mov and then .flv doesn't produce any better results. Here are the before and after files: http://www.warwicksd.org/warwick.m4a http://www.warwicksd.org/output.flv I used the following to get my conversion: ffmpeg -i warwick.m4a -b 300k -r 12 -s 300x300 -ar 22050 -y -ab 96k output.flv FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-libfaac --enable-libfaad --enable- libmp3lame --disable-vhook --enable-shared libavutil version: 49.5.0 libavcodec version: 51.44.0 libavformat version: 51.14.0 built on Oct 22 2007 15:31:25, gcc: 3.3 20030304 (Apple Computer, Inc. build 1640) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'warwick.m4a': Duration: 00:00:55.9, start: 0.000000, bitrate: 100 kb/s Stream #0.0(eng): Audio: mpeg4aac, 44100 Hz, stereo Stream #0.1(eng): Video: mjpeg, yuvj420p, 300x300, 44100.00 fps(r) Stream #0.2(eng): Data: tx3g / 0x67337874 Stream #0.3(eng): Data: text / 0x74786574 Output #0, flv, to 'output.flv': Stream #0.0(eng): Video: flv, yuv420p, 300x300, q=2-31, 300 kb/s, 12.00 fps (c) Stream #0.1(eng): Audio: libmp3lame, 22050 Hz, stereo, 96 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Press [q] to stop encoding frame= 83 fps= 21 q=2.0 Lsize= 1099kB time=6.9 bitrate=1301.6kbits/s video:70kB audio:657kB global headers:0kB muxing overhead 51.296550% .mov files convert nicely to .flv but these .m4as are just not working. Our current staff is very eager to use these Garage Band files to communicate announcements. I have been so desperate to get this particular file type to convert that I have been experimenting with grabbing the frames every 5 secs. and then rebuilding the images into video. This produces strange results and seems to be more programming then should be necessary. Thanks in advanced for any solutions you can provide. Nancy Reddig Web Programmer Warwick SD

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resize and imlib2 vhook in one command ?
by code＠u-turnmedia.com 02 Oct '08

02 Oct '08

hi, i would like to resize video and overlay with image. when i resize video, e.g. from 624x352 to 320x240, and use imlib2 vhook in one line, i get 320x240 video with small picture in the corner: ffmpeg -i infile.avi -cropright 52 -cropleft 52 -s 320x240 -aspect 1.333 -vhook './imlib2.so -x 0 -y 0 -i image.png' outfile.avi i know that options for imlib2 are -x -y for coordinates, and i would like to know how to use """ Expressions are functions of these variables: N frame number (starting at zero) H frame height W frame width h image height w image width X previous x coordinate of text or image Y previous y coordinate of text or image """ precisely, how do i tell to the image to keep the same size ? do i have to use two commands ? like in first command resize video, and in second use vhook ? thanks Co.De. --

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gamma filter in flv creation
by jdq＠xika.net 09 Apr '08

09 Apr '08

We have been using Sorenson Squeeze to create our FLVs. In order to counter what I perceived as a certain desaturation and dulling of colors, we have been using a "filter" with the following filters: GAMMA [checked] value=17 BLACK RESTORE [checked] --Amount = 17 --Smoothness=10 We have installed FFMPEG FFMEG and are getting good results using 2 pass, perhaps in some ways better than what we acheived with Squeeze. However, where it is not is good is that the images are again a bit duller and less vibrant in terms of color and vibrancy. Is there a way we can approximate the "filter" settings we've been using in Squeeze, such as Gamma, Brightness, Contrast, Black Restore, etc? thanks! xika -- View this message in context: http://www.nabble.com/gamma-filter-in-flv-creation-tp16197422p16197422.html Sent from the FFmpeg-users mailing list archive at Nabble.com.

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working cmdline for iPod acceptable mp4 conversion with libx264?
by blacktrash＠gmx.net 07 Apr '08

07 Apr '08

Hello, Has anybody got conversion for iPod working -- and by working I mean that the resulting file is accepted by iPod hardware -- with libx264? If yes, a rudimentary sample command line would be very nice to have. I got conversion working with libxvid like so (ommitting fine grain and 2pass options): $ ffmpeg -i <inp> -deinterlace -f mov \ -acodec libfaac -ab 128k -ar 48000 -ac 2 \ -vcodec libxvid -coder ac -bufsize 4096 -qmin 5 -qmax 10 \ -r 30 -s 640x480 -aspect 4:3 -g 300 -keyint_min 30 -bf 0 <outp> BTW, is 4096 bufsize some official standard; I only got it from examples ;), and couldn't find any specs where it's mentioned. With libx264 I played around with variations of the following (also stolen from examples) which convert fine, are playable in iTunes, but not accepted by the iPod: $ ffmpeg -i <inp> -deinterlace -f mp4 \ -acodec libfaac -ab 128k -ac 2 -ar 48000 \ -vcodec libx264 -coder ac -b 1600k \ -r 30 -s 640x480 -aspect 4:3 -g 300 -keyint_min 30 \ -level 30 -qmin 5 -lmin 5 -qmax 51 -bf 0 \ -sc_threshold 40 -rc_eq 'blurCplx^(1-qComp)' \ -cmp nsse -flags +slice+aic <outp> TIA c -- _B A U S T E L L E N_ lesen! --->> <http://www.blacktrash.org/baustellen.html>

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Generate libavcodec.so
by mayank77fromindia＠gmail.com 02 Apr '08

02 Apr '08

Still i am not clear how to generate the libavcodec.so file. In libavcodec folder there is one makfile and two other files are config.makand common.mak What is the purpose of config and common.mak.How these files are used alongwith makfile to generate libavcodec.so Regards, Mayank

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Problems decoding mp4a: Unsupported codec (id=86018) for input stream #0.1
by jackattack1＠gmail.com 02 Apr '08

02 Apr '08

Hello, I'm having issues converting video (.mov) files to .flv. I've gotten a couple files to convert properly, but seem to have an issue with converting videos with mp4a audio. I do have the faad2 and faac libraries installed, along with libmp3lame, and have ffmpeg configured with all of them. My configure line is: ./configure --enable-pthreads --enable-gpl --enable-libfaad --enable-libfaac --enable-libxvid --enable-nonfree --enable-libmp3lame Here's my full error output: FFmpeg version SVN-r12569, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-pthreads --enable-gpl --enable-libfaad --enable-libfaac --enable-libxvid --enable-nonfree --enable-libmp3lame libavutil version: 49.6.0 libavcodec version: 51.53.0 libavformat version: 52.12.0 libavdevice version: 52.0.0 built on Mar 28 2008 16:13:13, gcc: 4.1.2 20070626 (Red Hat 4.1.2-14) [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8428010]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'coursead.mov': Duration: 00:03:52.0, start: 0.000000, bitrate: 1568 kb/s Stream #0.0(eng): Video: h264, yuv420p, 640x480, 29.97 tb(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 48000 Hz, stereo Stream #0.2(eng): Data: tmcd / 0x64636D74 Output #0, flv, to 'video.flv': Stream #0.0(eng): Video: flv, yuv420p, 320x240, q=2-31, 200 kb/s, 29.97 tb(c) Stream #0.1(eng): Audio: adpcm_swf, 22050 Hz, stereo, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Unsupported codec (id=86018) for input stream #0.1 My output for: ffmpeg -formats | grep mp4 FFmpeg version SVN-r12569, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-pthreads --enable-gpl --enable-libfaad --enable-libfaac --enable-libxvid --enable-nonfree --enable-libmp3lame libavutil version: 49.6.0 libavcodec version: 51.53.0 libavformat version: 52.12.0 libavdevice version: 52.0.0 built on Mar 28 2008 16:13:13, gcc: 4.1.2 20070626 (Red Hat 4.1.2-14) E ipod iPod H.264 mp4 format D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG4/Motion JPEG 2000 format E mp4 mp4 format E psp psp mp4 format text2movsub remove_extra noise mov2textsub mp3decomp mp3comp mjpegadump imxdump h264_mp4toannexb dump_extra So it looks to me like I should have the proper decoder, but it's not working (as you can see above). I've searched through this mailing list, but haven't found any answers that seem to pertain to this issue. Am I missing a library or something? Thank you, -Jack Carlson

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compile libfaac support under cygwin
by brendanakelly＠yahoo.com 02 Apr '08

02 Apr '08

I can compile ffmpeg under cygwin but the libfaac support is not working. I configure ffmpeg as such: ../configure --enable-static --disable-shared --enable-libfaac --extra-cflags=-I/usr/local/include/ --extra-ldflags=-L/usr/local/lib $ ls /usr/local/lib libavcodec.a libavformat.a libfaac.a libllrint.a libmp4v2.la pkgconfig libavdevice.a libavutil.a libfaac.la libmp4v2.a llrint.o ffmpeg command line used: ../ffmpeg.exe -i test.mpg -acodec libfaac -ab 128kb -vcodec mpeg4 -b 1200kb -mbd 2 -flags +4mv+trell -a ic 2 -cmp 2 -subcmp 2 -s 320x180 test.mp4 But I get unknown codec errors: FFmpeg version SVN-r12310, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-static --disable-shared --enable-libfaac --extra-cflags=-I/usr/local/include/ --extra-ldflags=-L/usr/local/lib libavutil version: 49.6.0 libavcodec version: 51.50.1 libavformat version: 52.7.0 libavdevice version: 52.0.0 built on Mar 17 2008 19:15:37, gcc: 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) Input #0, asf, from '/cygdrive/c/Media/ipod-videos/test.mpg': Duration: 00:16:42.2, start: 73.116000, bitrate: 7239 kb/s Stream #0.0: Audio: mp3, 48000 Hz, stereo, 256 kb/s Stream #0.1: Invalid Codec type -1 Stream #0.2: Video: mpeg2video, yuv420p, 720x480 [PAR 8:9 DAR 4:3], 8000 kb/s, 29.97 tb(r) Unknown encoder 'libfaac' Any suggestions? Thanks Brendan

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Converting avi files to animated gifs
by dotancohen＠gmail.com 01 Apr '08

01 Apr '08

I need to output a summary of a video as an animated gif. Ideally, I would have eight equally-spaced frames from the video, and play them back one at a time, each for 0.25 seconds. So I'd have a 2 second animated gif. I have been using mplayer for the conversion as that's what I have been able to find relevant info on in google. This is what I have so far: #!/bin/bash mplayer "$@" -vo gif89a:output="$@".gif:fps=1 -vf scale=640:480 -endpos 8 -really-quiet This gives me eight frames from the first eight seconds of video. Not what I want, but it seems to be all that mplayer is capable of. Can ffmpeg grab those frames from $timeOfVideo/7 time periods? Note that I'm dividing the time of the video by 7, not 8, so that I will have the first and last frames of the video in the gif. My second problem is shortening the duration that each frame is shown. Currently, each frame is shown for 1 second. Can ffmpeg reduce that to 0.25 seconds each, so that the eight frames will be shown in two seconds? If there is a tool more suited to the job than ffmpeg, then please let me know what tool it is. I am very new to Linux in general and to bash in particular. Thanks in advance. Dotan Cohen http://what-is-what.com http://gibberish.co.il ?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-?-? A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing?

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Movie conversion
by carnold＠electrichendrix.com 31 Mar '08

31 Mar '08

>What is "10.3"? Sorry, i meant to state what linux distro i am using, opensuse 10.3 >It's in the FAQ. >http://ffmpeg.mplayerhq.hu/faq.html#SEC23 Yes i see that faq but i want to take the video off of DVD disc. So, the "input" in ffmpeg -i input -acodec libfaac -ab 128kb -vcodec mpeg4 -b 1200kb -mbd 2 -flags +4mv+trell -aic 2 -cmp 2 -subcmp 2 -s 320x180 -title X output.mp4 would be? DVD's have multiple vob files not just 1. Thanks for the clarification

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Movie conversion
by carnold＠electrichendrix.com 31 Mar '08

31 Mar '08

I use 10.3 and kde and ffmpeg for 10.3 from packman site. I want to take a purchased movie (DVD) and convert it into ipod format. Can anyone share the parameters to do this?

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