Error while opening codec for output stream #0.1 – maybe incorrect parameters such as bit_rate, rate, width or height
Piece a crap! I’ve spent half a day debugging this error..
So you are trying to convert some avi movies into flv and get rich with your video uploading website.. You’ve tested you upload video functionality and it works flawless, untill some guy comes and say: hey i’ve tried to upload this video and it didn’t work. You run to the Linux console do a log print and you receive this beautiful error:
FFmpeg version SVN-r10964, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-libmp3lame --enable-shared --prefix=/usr --enable-libogg --enable-libvorbis
libavutil version: 49.5.0
libavcodec version: 51.48.0
libavformat version: 51.18.0
built on Nov 8 2007 14:12:36, gcc: 4.1.1 20061011 (Red Hat 4.1.1-30)
Input #0, avi, from 'files/3635634.avi':
Duration: 00:00:18.1, start: 0.000000, bitrate: 660 kb/s
Stream #0.0: Video: mjpeg, yuvj422p, 320x240 [PAR 0:1 DAR 0:1], 15.00 fps(r)
Stream #0.1: Audio: pcm_u8, 11024 Hz, mono, 88 kb/s
Output #0, flv, to 'files/3635634.flv':
Stream #0.0: Video: flv, yuv420p, 320x240 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 15.00 fps(c)
Stream #0.1: Audio: libmp3lame, 11024 Hz, mono, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[flv @ 0x7c77d0]removing common factors from framerate
Error while opening codec for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height
You run manually the command :
ffmpeg -y -i input_video.avi -f flv output_video.flv
...and the error doesn't dissapear
After googling around reading ffmpeg documentation i found the solution. You need to manually set the sampling frequency like this:
ffmpeg -y -i files/input_file.avi -ar 22050 -f flv files/output_file.flv
Later edit: Post has been updated . Thanks to Peter
Filed under: Uncategorized | 59 Comments
Tags: codec, error, ffmpeg, stream, video conversion
Solutions for net headaches 
Man! This is great!!! Thanx for the solution. Had the same problem. 🙂
Thanx again.
Anyone plz tell me where to enter those commands and how
“-ar 22050” is not the bitrate, it’s the sampling frequency! “-ab” is the bitrate…
Or am I missing something?
Thanks a ton!
Thanks for the article helped me debug the problem.
In the article you say:
maybe incorrect parameters such as bit_rate, rate, width or height – rate doesn’t have to do with audio. Why? Can you please explain.
I think Peter is right. Its a problem with the audios sampling frequency rate not the bit_rate. I could be wrong.
Found via Google, thanks!
I had to add addiotional “-ac 2” to tell ffmpeg we’re having stereo audio.
Thank you thank you thank you! I spent all day recompiling several versions of ffmpeg before i found this. Worked like a charm!
Thankyou very much. It works!
Toni thnx
Thank you very much ! worked like a charm..
Hello dude,
here i want u to solve my problem!!!
i tried to convert a movie from .VOB to MP4 format then ERROR MESSAGE
Error while opening codec for output stream #0.1 – maybe incorrect parameters such as bit_rate, rate, width or height
is displaying 4 only one file . now how can i convert it to mp4
plz suggest me an answer !!
i hope u will n thank u!!!!
Waiting 4 ur reply!!!!!
Thank you very very much for sharing this with us :D!!!
I was trying mine with -r when it should have been -ar all long!
Thanks again! Much appreciated!
Thanks alot Dude.
and then the quality become bad as Chuck Norris ..
thanks for sharing info %)
can someone simplify the solution. I’m not sure where to enter these commands.
I’m trying to run E.M. total Video Converter. I keep getting that same error but I don’t see anywhere to make those changes.
Regards,
Tplayer
thanks man, very useful!
Man you great!
Finally, was getting annoyed already.
Thanks a lot
I’m same problem..
Error while opening codec for output stream #0.1 – maybe incorrect parameters such as bit_rate, rate, width or height
command.
ffmpeg -i princess.avi -ab 56 -ar 44100 -b 320 -r 24 -sameq -f flv princess.flv
ffmpeg -y -i princess.avi -f flv princess.flv
ffmpeg -y -i princess.avi -ar 22050 -f flv princess.flv
ffmpeg -y -i files/princess.avi -ar 22050 -f flv files/princess.flv
I don’t understand…
is that wrong my command?
Here’s how I got it to work:
ffmpeg -y -i video.mkv -ar 22050 -ac 2 -vcodec flv output.flv
Hope it helped..
there are many free software video converters on the internet that we can download but the best ones are always paid version *
I also got this error when converting to mp4. Solution was to output to width and height that were multiples of 4. My input video was an odd height — 715 pixels. Specifying the size with “-s 1272×712” did the trick.
thanks 🙂 very useful!
¡¡¡Thanks a lot!!!
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Also had to add the “-ac 2” to resolve issue. Thanks!
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Adding -ac2 did the trick for me. Random.
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You hero. Thanks for that – stumbled across it just when I was about to give up.
Thanks a lot men. Just saved me a lot of headaches 😀
[SOLVED]
added -b 64k before output to set output bitrate (aconv = ffmpeg)
ffmpeg -i input.avi -f avi -b 64k output.avi
of
avconv -i input.avi -f avi -b 64k output.avi
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