[Libav-user] This command take 2 minutes to render. Can it be quicker?

[Vijay Kanta]

On 05/29/2014 06:54 PM, Steve Boyer wrote:
> On Thu, May 29, 2014 at 8:04 AM, Vijay Kanta <viju.kantah at gmail.com 
> <mailto:viju.kantah at gmail.com>> wrote:
>
>     On 05/28/2014 06:15 PM, Steve Boyer wrote:
>>     On Wed, May 28, 2014 at 3:34 AM, Vijay Kanta
>>     <viju.kantah at gmail.com <mailto:viju.kantah at gmail.com>> wrote:
>>
>>         On 05/28/2014 05:17 AM, Carl Eugen Hoyos wrote:
>>
>>             Vijay Kanta <viju.kantah at ...> <mailto:viju.kantah at ...>
>>             writes:
>>
>>                 Can it be quicker and less resource
>>                 hungry by altering the following command?
>>
>>                 :~$ /usr/local/bin/ffmpeg -i /link/to/music.mp3
>>                 -i /link/to/video.mp4 -vcodec libx264 -crf 23
>>                 -vf subtitles=/link/to/subtitles.srt -strict -2
>>                 /link/to/muxed.mp4
>>
>>             This is missing console output but at least
>>             -preset ultrafast (and friends) come to
>>             mind.
>>
>>
>>     This command will (if I understand correctly) transcode your
>>     audio. Using "-c:a copy" will copy the audio.mp3 into the
>>     muxed.mp4 container. Same thing with "-c:v copy" as the video.mp4
>>     is (obviously) already in an MP4 container, it should be a
>>     trivial matter to mux the two streams into a single MP4.
>>
>>             Carl Eugen
>>
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>>
>>         Sorry, what do you mean by missing console output? This
>>         command does output to the shell.
>>
>>
>>     It would help us even more if you could provide what your console
>>     outputs when the command runs.
>>
>>         Regards,
>>         ~Vijay.
>>
>>     Steve
>>
>>
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>     Hey, it doesn't work or I couldn't do it properly. Here's the
>     command and output.
>
>     FFMPEG-COMMAND: /usr/local/bin/ffmpeg -i
>     music/qT0pdDhKxFDnfJHq2.mp3 -c:a copy -i
>     video/HKp1ZpHbANT4dmGRC.mp4 -vcodec libx264 -crf 23 -vf
>     subtitles=subtitles/1718379803.srt -preset ultrafast -strict -2
>     film/HKp1ZpHbANT4dmGRC.mp4
>     ffmpeg version 2.1.1 Copyright (c) 2000-2013 the FFmpeg developers
>       built on Dec 15 2013 14:17:24 with gcc 4.4.5 (Ubuntu/Linaro
>     4.4.4-14ubuntu5)
>       configuration: --enable-libass --enable-shared --enable-libx264
>     --enable-gpl
>       libavutil      52. 48.101 / 52. 48.101
>       libavcodec     55. 39.101 / 55. 39.101
>       libavformat    55. 19.104 / 55. 19.104
>       libavdevice    55.  5.100 / 55.  5.100
>       libavfilter     3. 90.100 /  3. 90.100
>       libswscale      2.  5.101 /  2.  5.101
>       libswresample   0. 17.104 /  0. 17.104
>       libpostproc    52.  3.100 / 52.  3.100
>     Input #0, mp3, from 'music/qT0pdDhKxFDnfJHq2.mp3':
>       Metadata:
>         title           : Legendary
>         artist          : Oval
>         album           : Ringtone EP
>         track           : 1
>       Duration: 00:00:50.86, start: 0.000000, bitrate: 128 kb/s
>         Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
>     Unknown decoder 'copy'
>
>
> Vijay, Can you send me the input files so I can help come up with a 
> fix? I am away from my home computer where I have a variety of mp4s 
> and mp3s to test with. To me, this SHOULDN'T fail, so I am curious to 
> see this myself.
>
> Steve
>
>     Regards,
>     ~Vijay.
>
>
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>
>
>
>
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Hey Steve,

I am wondering how the media can help solve a command format.

Regards,
~Vijay.

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