Problem using avconv to convert .mp4 to .webm
finally for some have interest, i use these commands to convert some type of video files:
avconv -i "$videoname".AVI -b 2048k -r 30 -c:a libmp3lame "$videoname".mp4
avconv -i "$videoname".AVI -c:v libx264 -ar 44100 -y "$videoname".flv
avconv -i "$videoname".mp4 -y "$videoname".webm
with these three steps i can embed correctly with my script.
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johnny cravatta
Updated on September 18, 2022Comments
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johnny cravatta over 1 year
I'll try to describe my situation:
I have an android phone makes video in mp4 format. I like to share this video on my web page and jwplayer. Such that operates well. I use one script to make all and all works fine. I use to convert the file in webm,and Inserting in jwplayer with this type of embedding code:
<div id="player" align="center"> <script src="jwplayer.js" type="text/javascript"></script> <script type="text/javascript"> jwplayer("player").setup({ height: 270, image: "thumb.png", levels: [ {file: 'file.mp4', type: 'video/mp4' }, {file: 'file.webm', type: 'video/webm' }, ], modes: [ { type: 'html5' }, { type: 'flash', src: 'player.swf' } ], width: 480 }); </script></div>
to convert from mp4 to webm i use simply this command:
avconv -i "$file".mp4 "$file".webm
OK! Now the problem is with my new photo camera. My pentax makes video in AVI and in this case to embedding with my jwplayer I need one mp4 and one webm file.
OK I use this command:
avconv -i "$videoname".AVI -c:v libx264 -crf 23 -c:a libfaac -b:a 192k "$videoname".mp4
the results are positive.
Now if i use to convert this new mp4 in webm with:
avconv -i "$file".mp4 "$file".webm
the webm file doesn't work....
example ffprobe with the avi file:
$ ffprobe IMGP0129.AVI avprobe version 0.8.4-4:0.8.4-0ubuntu0.12.04.1, Copyright (c) 2007-2012 the Libav developers built on Nov 6 2012 16:51:33 with gcc 4.6.3 Input #0, avi, from 'IMGP0129.AVI': Duration: 00:00:44.64, start: 0.000000, bitrate: 27089 kb/s Stream #0.0: Video: mjpeg, yuvj420p, 1280x720, 30.08 tbr, 30.08 tbn, 30.08 tbc Stream #0.1: Audio: pcm_u8, 32000 Hz, 1 channels, u8, 256 kb/s
example of error message for the webm in output:
$ avconv -i output.mp4 out2.webm avconv version 0.8.4-4:0.8.4-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers built on Nov 6 2012 16:51:33 with gcc 4.6.3 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf53.21.0 Duration: 00:00:04.99, start: 0.000000, bitrate: 2228 kb/s Stream #0.0(und): Video: h264 (Main), yuvj420p, 1280x720, 2193 kb/s, 30.01 fps, 30.01 tbr, 500k tbn, 60.01 tbc Stream #0.1(und): Audio: aac, 32000 Hz, mono, s16, 54 kb/s Incompatible pixel format 'yuvj420p' for codec 'libvpx', auto-selecting format 'yuv420p' [buffer @ 0x2345340] w:1280 h:720 pixfmt:yuvj420p [avsink @ 0x2356540] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out' [scale @ 0x2343220] w:1280 h:720 fmt:yuvj420p -> w:1280 h:720 fmt:yuv420p flags:0x4 [libvpx @ 0x23468a0] v1.0.0 Output #0, webm, to 'out2.webm': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf53.21.0 Stream #0.0(und): Video: libvpx, yuv420p, 1280x720, q=-1--1, 200 kb/s, 1k tbn, 30.01 tbc Stream #0.1(und): Audio: libvorbis, 32000 Hz, mono, s16 Stream mapping: Stream #0:0 -> #0:0 (h264 -> libvpx) Stream #0:1 -> #0:1 (aac -> libvorbis) Press ctrl-c to stop encoding **[webm @ 0x2344de0] Application provided invalid, non monotonically increasing dts to **muxer in stream 0: 33 >= 33** **strong text**av_interleaved_write_frame(): Invalid argument**
Any suggestions?
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Davisein over 11 yearsI have been struggling with several problems similar lately. Can you add the error message? Can you add the format ffprobe "$videoname".avi gives to you?
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johnny cravatta over 11 yearsok i'm going to update question
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Davisein over 11 yearsHave you tried putting this
--rtmp-liveradio-opts --live
. I saw it here: ffmpeg.org/pipermail/ffmpeg-user/2011-June/001315.html -
johnny cravatta over 11 yearsthanks davisein but this option is used with live streams "rtmp". lists.infradead.org/pipermail/get_iplayer/2011-May/001504.ht‌​ml
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Davisein over 11 yearsMy bad, shame on me :( I was looking for some workaround for you as you had a different problem than me ;)
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phoibos over 11 yearsJust to be nitpicking: You should use the original avi source for the conversion to webm for maximum quality.
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johnny cravatta about 11 years@phoibos,thanks for the suggest, but i'm unable to find correct avconv options to converto directly from avi to webm, can you post some verifyed examples, please.i have tried with "avcvonv -i video.avi -y video.webm" dont'work
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v010dya over 9 years@johnnycravatta Have you tried
avconv -i video.AVI -sn -y video.webm
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v010dya over 9 years@johnnycravatta If that doesn't work, you should consider posting somewhere an example of your avi file, so that people can try.