Changes between Version 8 and Version 9 of How to concatenate (join, merge) media files


Ignore:
Timestamp:
11/23/2012 12:20:18 AM (7 months ago)
Author:
burek
Comment:

updated the script with logging directions

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  • How to concatenate (join, merge) media files

    v8 v9  
    1010./mmcat <input1> <input2> <input3> ... <output> 
    1111}}} 
     12 
     13If you get an error like this: 
     14{{{ 
     15#/tmp/mcs_v_all: Operation not permitted 
     16}}} 
     17that could mean that you don't have correct permissions set on /tmp directory (or whatever you set in TMP variable) or that decoding of your input media has failed for some reason. In this case, it would be the best to turn on the logging (described in the script's comments) 
    1218 
    1319= Script = 
    … …  
    5662 
    5763# the version of the script 
    58 VERSION=1.2 
     64VERSION=1.3 
    5965 
    6066# location of temp folder 
    … …  
    97103################################################################################ 
    98104mkfifo $TMP/mcs_a1 $TMP/mcs_v1 
     105 
    99106ffmpeg -y -i $first -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 $TMP/mcs_a1 2>/dev/null </dev/null & 
    100107ffmpeg -y -i $first -an -f yuv4mpegpipe -vcodec rawvideo $TMP/mcs_v1 2>/dev/null </dev/null & 
     108 
     109# if you need to log the output of decoding processes (usually not necessary) 
     110# then replace the "2>/dev/null" in 2 lines above with your log file names, like this: 
     111#ffmpeg -y -i $first -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 $TMP/mcs_a1 2>$TMP/log.a.1 </dev/null & 
     112#ffmpeg -y -i $first -an -f yuv4mpegpipe -vcodec rawvideo $TMP/mcs_v1 2>$TMP/log.v.1 </dev/null & 
    101113 
    102114################################################################################ 
    … …  
    110122do 
    111123        mkfifo $TMP/mcs_a$i $TMP/mcs_v$i 
     124 
    112125        ffmpeg -y -i $f -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 $TMP/mcs_a$i 2>/dev/null </dev/null & 
    113126        { ffmpeg -y -i $f -an -f yuv4mpegpipe -vcodec rawvideo - 2>/dev/null </dev/null | tail -n +2 > $TMP/mcs_v$i ; } & 
     127 
     128        # if you need to log the output of decoding processes (usually not necessary) 
     129        # then replace the "2>/dev/null" in 2 lines above with your log file names, like this: 
     130        #ffmpeg -y -i $f -vn -f u16le -acodec pcm_s16le -ac 2 -ar 44100 $TMP/mcs_a$i 2>$TMP/log.a.$i </dev/null & 
     131        #{ ffmpeg -y -i $f -an -f yuv4mpegpipe -vcodec rawvideo - 2>$TMP/log.v.$i </dev/null | tail -n +2 > $TMP/mcs_v$i ; } & 
     132 
    114133        all_a="$all_a $TMP/mcs_a$i" 
    115134        all_v="$all_v $TMP/mcs_v$i"