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

[Steve Boyer]

On Thu, May 29, 2014 at 8:04 AM, Vijay Kanta <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>
> wrote:
>
>>  On 05/28/2014 05:17 AM, Carl Eugen Hoyos wrote:
>>
>>> Vijay Kanta <viju.kantah at ...> <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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>>> Libav-user at ffmpeg.org
>>> http://ffmpeg.org/mailman/listinfo/libav-user
>>>
>>  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
>
>
> _______________________________________________
> Libav-user mailing listLibav-user at ffmpeg.orghttp://ffmpeg.org/mailman/listinfo/libav-user
>
>  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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> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
>
>
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