September 2005 - ffmpeg-user - lists.ffmpeg.org

image + audio conversion to MPEG4
by s.mathur＠ieee.org 28 Sep '05

28 Sep '05

Hello, I want to convert a still image and an audio track to an MPEG4 file, such that the image is displayed during the entire audio playback. Can someone please help with the additional command line options/tools needed to stretch the image to the duration of the track? I want to add minimum possible overhead to the MPEG4 file size compared to the audio-only scenario. I tried the options below, but as expected the image only lasts for the first frame: ffmpeg -f image -img jpeg -i Sunset%d.jpg -i testsample16kHz.wav test .mp4 ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 [mjpeg @ 0x8319e5c]get_buffer() failed Input #0, image, from 'Sunset%d.jpg': Duration: 00:00:00.0, bitrate: N/A Stream #0.0: Video: rawvideo, yuvj444p, 800x600, 25.00 fps Input #1, wav, from 'testsample16kHz.wav': Duration: 00:01:06.1, bitrate: 512 kb/s Stream #1.0: Audio: pcm_s16le, 16000 Hz, stereo, 512 kb/s File 'mixed.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to 'mixed.mp4': Stream #0.0: Video: mpeg4, 800x600, 25.00 fps, q=2-31, 200 kb/s Stream #0.1: Audio: aac, 16000 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 1 q=4.3 Lsize= 845kB time=0.0 bitrate=173065.6kbits/s video:43kB audio:793kB global headers:0kB muxing overhead 1.098105% Thanks Siddharth

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Where to find win32 binary?
by wzrlpy＠hotmail.com 28 Sep '05

28 Sep '05

Hi, These two front ends to FFMpeg include a binary compiiled for Win32: http://fever.link.free.fr/SUPER.html http://www.videohelp.com/download/gui4ffmpeg12.zip Anyway, notice that they may not have all the codecs you want, that is another reason to compile FFMpeg by yourself. Regards, V?ctor

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Reading from an open file
by macca＠maccasoft.com 27 Sep '05

27 Sep '05

Hi. I'm using the avformat library to open an mpeg file that is still open for writing. The file opens fine using a normal open/O_RDONLY call but fails when opened with av_open_input_file. Is there some flag that can be used to tell avformat that the file should not be opened in exclusive mode ? Bye

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decode to yuv420
by Philippe.deneve＠intec.ugent.be 27 Sep '05

27 Sep '05

Hi, I want to perform next thing: My source file is uncompressed RGB in an AVI container and I want to 'decode' (or better 'convert') it to raw YUV 4:2:0 format. When i do this: ffmpeg -i HD.avi HD.yuv it puts all rgb bits raw to the yuv (in fact stripping the avi from its headers). It should convert to 4:2:0! Do you know which option or codec I should use? regards, Philippe.

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Re[1]:
by Keip＠humour.com 27 Sep '05

27 Sep '05

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Where to find win32 binary?
by andreas＠bolanski.com 27 Sep '05

27 Sep '05

I have been looking around for a win32 binary of ffmpeg from latest cvs or something as close as possibly. I tried to look at the old archive but the link is dead http://mplayerhq.hu/MPlayer/cvs/ anyone have a exe lying around never than the released 0.4.9-pre1? /andy sweden

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Re[7]:
by Howes＠future-online.net 27 Sep '05

27 Sep '05

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(no subject)
by gtg850h＠mail.gatech.edu 26 Sep '05

26 Sep '05

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frame question
by knowdet＠yahoo.com 26 Sep '05

26 Sep '05

Hi! I use ffmpeg for encoding and I would like to manipulate frame information. The main goal is to make a frame last for a specified time. For example if a stream's frame rate is 25 fps, is it possible to make 1 frame last for 2 frames' time with AVI output format? If it's possible, how (sturcture, member name)? Thanks in advance! __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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silent mode?
by dgiet＠edillia.com 26 Sep '05

26 Sep '05

Sorry, that was ont in my intention. In ColdFusion the tag <cfexecute> does not work fine and i have encountered many problems with it. So, in a forum i have found a link to <cfx_exec> from Adiabata http://www.adiabata.com which works well but only on windows. This CFX can be try and buy from http://www.cftagstore.com/?page=viewTag <http://www.cftagstore.com/?page=viewTag&tagId=175&message=The%20evaluat ion%20should%20start%20downloading> &tagId=175&message=The%20evaluation%20should%20start%20downloading Didier

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