h.264 - Concatenate two mp4 files using ffmpeg -


i'm trying concatenate 2 mp4 files using ffmpeg. need automatic process hence why chose ffmpeg. i'm converting 2 files .ts files , concatenating them , trying encode concated .ts file. files h264 , aac encoded , i'm hoping keep quality same or close original possible.

ffmpeg -i part1.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part1.ts ffmpeg -i part2.mp4 -vcodec copy -vbsf h264_mp4toannexb -acodec copy part2.ts cat part1.ts part2.ts > parts.ts ffmpeg -y -i parts.ts -acodec copy -ar 44100 -ab 96k -coder ac -vbsf h264_mp4toannexb parts.mp4

unfortunately i'm getting following error message coming ffmpeg during encoding:

[h264 @ 0x1012600]sps_id out of range [h264 @ 0x1012600]non-existing sps 0 referenced in buffering period [h264 @ 0x1012600]sps_id out of range [h264 @ 0x1012600]non-existing sps 0 referenced in buffering period [null @ 0x101d600]error, non monotone timestamps 13779431 >= 13779431kbits/s     av_interleaved_write_frame(): error while opening file

this happens half way through encoding makes me think can't concat 2 .ts files , have work. appreciated.

ffmpeg has 3 concat methods. (in windows, use double quotes ")

concat protocol

ffmpeg -i 'concat:input1|input2' -codec copy output

concat video filter

ffmpeg -i opening.mkv -i episode.mkv -i ending.mkv \   -filter_complex '[0:0] [0:1] [1:0] [1:1] [2:0] [2:1] concat=n=3:v=1:a=1 [v] [a]' \   -map '[v]' -map '[a]' output.mkv

note method performs re-encode.

concat demuxer

$ cat mylist.txt file '/path/to/file1' file '/path/to/file2' file '/path/to/file3'  $ ffmpeg -f concat -i mylist.txt -c copy output

for windows:

(echo file ../../../../1.mp4 & echo file ../../../../2.mp4 )>%tmp%/list.txt ffmpeg -safe 0 -f concat -i %tmp%/list.txt -c copy c:/output.mp4

which 1 use

  • concat protocol: use formats support file level concatenation (mpeg-1, mpeg-2 ps, dv).
  • concat filter: use if need re-encode such when applying filters.
  • concat demuxer: use when want avoid re-encode , format not support file level concatenation.

if in doubt try concat demuxer.

also see


Comments

Post a Comment

Popular posts from this blog

ubuntu - PHP script to find files of certain extensions in a directory, returns populated array when run in browser, but empty array when run from terminal -

i running os ububtu 16.04. ultimate goal able run php script cron job every minute. here php script located @ /var/www/html/tests/test/index.php : <?php $directorypath = $_server['document_root']."/tests/test/data/"; echo "directorypath: $directorypath<br><br>";//check $imagefilepathsarray = glob($directorypath . "*.{png,gif}", glob_brace); echo "<br><br>imagefilepathsarray: "; print_r($imagefilepathsarray);//check ?> when open php script in browser visiting url my-ip-address/tests/test/index.php , get: directorypath: /var/www/html/tests/test/data/ imagefilepathsarray:array( [0] => /var/www/html/tests/test/data/pic.png [1] => /var/www/html/tests/test/data/pic.gif ) before writing cron job in crontab file, need check if can run anywhere using terminal . opened ubuntu terminal @ /home/ location, , executed in terminal: sudo php /var/www/html/tests/test/index.php i got following out...
Read more

php - How can i create a user dashboard -

today have questions you, want create user dashboard site, include (obviously), users data, example -email -username -and others stuff how can information, , print them in html page? if can, how can these information via php sessions? shuld use session? example, if user login, , start new session ( session_start() ), how can data print in dashboard? should use php "project"? in advice, have day , thank time!
Read more

javascript - How to detect toggling of the fullscreen-toolbar in jQuery Mobile? -

i have jquery mobile page fixed full-screen toolbar, data-tap-toggle enabled. straight under toolbar have positioned banner should slide upwards when toolbar hiding , slide downward when toolbar showing. jquery mobile toggles toolbar applying , removing ui-fixed-hidden class - sadly, can't find in documentation of toolbar widget toggle , hide or show event that. how can detect when toolbar toggled, reposition banner? .banner { position: fixed; background-color: darkseagreen; top: 46px; min-height: 48px; width: 100%; text-align: center; line-height: 48px; } <!doctype html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"> <script src="https://code.jquery.com/jquery-1....
Read more