[FFmpeg-user] mp4 splitting and concatenating process

[Mahesh Patade]

Hey hans,

For me mkv concatenation is working fine with my process. Do you want
output file in mkv format ?

On Mon, Jul 6, 2015 at 8:24 PM, Hans Emmanuel <hans at sparksupport.com> wrote:
> Hello Mahesh,
>
> Thanks for your reply. Its really interesting project. We are looking in to
> building a scalable transcoding farm in AWS. I tried using your commands
> for splitting and concatenating , but have the same result. The issue seems
> only for mkv files while mp4 concatenation seems fine.
>
> On Mon, Jul 6, 2015 at 12:05 PM, Mahesh Patade <patademahesh at gmail.com>
> wrote:
>
>> Hey,
>>
>> Please check this process
>> https://github.com/patademahesh/Distributed-Video-Transcoding/.
>>
>> I have written this logic in my project. Check scripts.
>>
>>
>>
>> On Mon, Jul 6, 2015 at 11:39 AM, Hans Emmanuel <hans at sparksupport.com>
>> wrote:
>> > Hello all,
>> >
>> > I need to split mp4 files for distributed batch transcoding process. I
>> was
>> > planning to split it with ffmpeg command
>> >
>> > *ffmpeg -i largefile.mp4 -ss 00:00:00 -t 00:05:00  -acodec copy -vcodec
>> > copy part1.mp4 -ss 00:05:00 -t 00:05:00  -acodec copy -vcodec copy
>> > part2.mp4 * etc..
>> >
>> > Then concatenating the part files with
>> >
>> > *ffmpeg -f concat -i mylist.txt -c copy final.mp4*    where mylist.txt
>> > contains the part files locations. But the final video seems hanging for
>> a
>> > bit of second at the joining points. I  have tried the other method with
>> > mpegts.
>> >
>> > first I split converted to mpegts with
>> >
>> >
>> > *ffmpeg -i file.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts
>> file_mpegts.ts*
>> >
>> > Then I split mpegts to part files with the first ffmpeg command and
>> > finally I concatenated part files with
>> >
>> > *ffmpeg -i "concat:part1.ts|part2.ts" -c copy -bsf:a aac_adtstoasc
>> > file_final.mp4*  . But in this method also, the above mentioned
>> >
>> >  problem is there. Am I using the correct commands/ method? Please
>> > share your thoughts for a smooth concatenation.
>> >
>> >
>> >
>> >
>> > --
>> >    Warm Regards,  Hans Emmanuel
>> > *Project Manager (Linux Infrastructure Management)*
>> >  *Email* :  hans at sparksupport.com   *|*   *Skype* :  sparkhans
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>> https://twitter.com/sparksupport>
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>>
>>
>> --
>> Best Regards,
>> Mahesh Patade
>> Mob. No. +91-97735-80660
>> _______________________________________________
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>>
>
>
>
> --
>    Warm Regards,  Hans Emmanuel
> *Project Manager (Linux Infrastructure Management)*
>  *Email* :  hans at sparksupport.com   *|*   *Skype* :  sparkhans
> <http://www.sparksupport.com/> <http://www.sparkmycloud.com/>
> <https://www.facebook.com/sparksupport>
> <http://www.linkedin.com/company/244846>  <https://twitter.com/sparksupport>
> 3rd Floor, Leela Infopark, Phase -2,Kakanad, Kochi-30, Kerala, India
> *Phone*:+91 484 6561696 , *Mobile*:91-9744167260.   *Confidentiality
> Notice:* Information in this e-mail is proprietary to SparkSupport. and is
> intended for use only by the addressed, and may contain information that is
> privileged, confidential or exempt from disclosure. If you are not the
> intended recipient, you are notified that any use of this information in
> any manner is strictly prohibited. Please delete this mail & notify us
> immediately at info at sparksupport.com
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user



-- 
Best Regards,
Mahesh Patade
Mob. No. +91-97735-80660