I'm trying to create a movie using ffmpeg and.or mencoder, from an image
file (jpg / png) and an audio file.
I encountered problems and searched for answers but I was unable to find
any that would help me in my problem, so I came to you to ask this directly.
Basically I have an audio file (mp3 / wav / ogg / whatever) and, for the
entire length of this audio track, I want to create a movie (how it is
encoded is not important for me) which will contain this audio track,
and as video data - an image file (jpg / png / whaterver).
I tried to do this in one step, but I wasn't able to find any way to do
this :( So here is what I did:
I succeeded in using mencoder to create a movie from the image file
using the following command:
>>> mencoder mf:///home/test/test.jpg -mf w=800:h=600:fps=25:type=jpg
-ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell -oac copy -o video.avi
The result (video.avi) file is a correct movie with only one frame (of
course - that was expected)
Now, I tried to use ffmpeg to join my audio file with this one frame
video file, into another output file, issuing the following command
(which is incorrect, but I'm telling you what I've tried):
>>> ffmpeg -y -i audio.mp3 -vn -acodec copy -i video.avi -an -vcodec
copy -map 0:1 -map 1:0 -b 2500 result.avi
Now, I definitelly do something wrong as I cannot understand really well
the -map option in order to get this right, but here is what I tried to do
- first input file (the audio file)
-vn -- no video
-acodec -- copy
- second input file (the video file created with mencoder)
-an -- no audio
-vcodec -- copy
now the -map options
-map 0:1 -map 1:0
-map 0:1 -- I understood from documentation and other references that
this means that input 0 (the audio file) is to be mapped to output
stream 1(the audio)
-map 1:0 -- mapping the video stream from input 2 (index 1) to the
video stream in output file
Definitelly I do something wrong as ffmpeg reports this:
===
libavutil version: 49.6.0
libavcodec version: 51.56.0
libavformat version: 52.13.0
libavdevice version: 52.0.0
built on Jun 1 2008 15:53:08, gcc: 4.1.2 20070626 (Red Hat 4.1.2-14)
Input #0, mp3, from 'audio.mp3':
Duration: 00:08:02.61, start: 0.000000, bitrate: 320 kb/s
Stream #0.0: Audio: mp3, 44100 Hz, stereo, 320 kb/s
Input #1, avi, from 'video.avi':
Duration: 00:00:00.04, start: 0.000000, bitrate: 5445 kb/s
Stream #1.0: Video: mpeg4, yuv420p, 800x600 [PAR 1:1 DAR 4:3], 25.00
tb(r)
Output file does not contain any stream
===
Can I be forwarded to a more detailed documentation page or to the right
direction about how to do this the right way?
What I want to do is similar to what movie maker from WinXP is doing -
create a movie from an audio file and an image. The image should be the
same for the entire length of the audio file. Of course, I would like to
inform ffmpeg to add keyframes every X.XX seconds, etc... but these aer
tweaks that I'll work on later, after I will see that the creation works
in the beginning.
Note: I've sent this e-mail to both mencoder-users@mplayerhq.hu and
ffmpeg-user@mplayerhq.hu as I've just registered myself with ffmpeg
list, and I don't know if the message would arrive or not, and message
arrival is priority for me.
Thank you for all your hard work and support.
With kind regards,
Sebi Onofrei
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