How to merge files in correct order using command prompt
2
I have a folder with video segments from a mpeg-dash video.
there is an "init.mp4" file along with 275 segments, i.e. "seg-1.m4s", "seg-2.m4s" and so on. I want to merge them in a single file.
I am using the following command in cmd:
copy /b init.mp4 + seg-*.m4s source.mp4
The above code is merging the files in wrong order. see the merge order
How do I merge the files in the correct order like, 1,2,3...9,10,11..19,20...
Also note that I have tried merging them one by one using a loop. but that is way slower compared to the above code
batch-file cmd merge concatenation command-prompt
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
|
show 2 more comments
2
I have a folder with video segments from a mpeg-dash video.
there is an "init.mp4" file along with 275 segments, i.e. "seg-1.m4s", "seg-2.m4s" and so on. I want to merge them in a single file.
I am using the following command in cmd:
copy /b init.mp4 + seg-*.m4s source.mp4
The above code is merging the files in wrong order. see the merge order
How do I merge the files in the correct order like, 1,2,3...9,10,11..19,20...
Also note that I have tried merging them one by one using a loop. but that is way slower compared to the above code
batch-file cmd merge concatenation command-prompt
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
1
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
p.s. I am not creating a separate batch script to merge. I am calling theos.system( )function in python
– Rajorshi Roy
Nov 20 '18 at 14:12
|
show 2 more comments
2
2
2
1
I have a folder with video segments from a mpeg-dash video.
there is an "init.mp4" file along with 275 segments, i.e. "seg-1.m4s", "seg-2.m4s" and so on. I want to merge them in a single file.
I am using the following command in cmd:
copy /b init.mp4 + seg-*.m4s source.mp4
The above code is merging the files in wrong order. see the merge order
How do I merge the files in the correct order like, 1,2,3...9,10,11..19,20...
Also note that I have tried merging them one by one using a loop. but that is way slower compared to the above code
batch-file cmd merge concatenation command-prompt
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
I have a folder with video segments from a mpeg-dash video.
there is an "init.mp4" file along with 275 segments, i.e. "seg-1.m4s", "seg-2.m4s" and so on. I want to merge them in a single file.
I am using the following command in cmd:
copy /b init.mp4 + seg-*.m4s source.mp4
The above code is merging the files in wrong order. see the merge order
How do I merge the files in the correct order like, 1,2,3...9,10,11..19,20...
Also note that I have tried merging them one by one using a loop. but that is way slower compared to the above code
batch-file cmd merge concatenation command-prompt
batch-file cmd merge concatenation command-prompt
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
asked Nov 18 '18 at 21:59
Rajorshi RoyRajorshi Roy
163
163
1
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
p.s. I am not creating a separate batch script to merge. I am calling theos.system( )function in python
– Rajorshi Roy
Nov 20 '18 at 14:12
|
show 2 more comments
1
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
p.s. I am not creating a separate batch script to merge. I am calling theos.system( )function in python
– Rajorshi Roy
Nov 20 '18 at 14:12
1
1
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
p.s. I am not creating a separate batch script to merge. I am calling the
os.system( ) function in python– Rajorshi Roy
Nov 20 '18 at 14:12
p.s. I am not creating a separate batch script to merge. I am calling the
os.system( ) function in python– Rajorshi Roy
Nov 20 '18 at 14:12
|
show 2 more comments
3 Answers
3
active
oldest
votes
0
so, my english dont help...
but, i think that your need rename files:
1 - 9 to 001 - 009:
10 - 99 to 010 - 099:
in commandline:
for /l %l in (1 1 9) do ren seg-%l.m4s seg-00%l.m4s
for /l %l in (10 1 99) do ren seg-%l.m4s seg-0%l.m4s
in batch file :
for /l %%l in (1 1 9) do ren seg-%%l.m4s seg-00%%l.m4s
for /l %%l in (10 1 99) do ren seg-%%l.m4s seg-0%%l.m4s
After this, run your code:
copy /b init.mp4 + seg-*.m4s source.mp4
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
add a comment |
2
A very simple pure Batch-file solution:
@echo off
setlocal EnableDelayedExpansion
rem Sort file names in numerical order
for /F "tokens=1,2 delims=-." %%a in ('dir /B *.m4s') do (
set /A "num=1000+%%b"
set "file[!num!]=%%a-%%b.m4s"
)
rem Create the ordered list
set "files=init.mp4"
for /F "tokens=2 delims==" %%a in ('set file[') do set "files=!files! + %%a"
rem Do it
copy /B %files% source.mp4
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
@DodgyCodeException: With 3 digits, each+ seg-123.m4sfile name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...
– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your firstfor /fshould use a command rather than a file spec?
– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!:(Just fixed...
– Aacini
Nov 19 '18 at 18:41
add a comment |
1
This can be done fairly easily. Put this code in a file named mp4match.ps1. The key to this code that the sorting is done on the numeric value in the filename. It is extracted by a regex.
$segments = Get-ChildItem -File -Filter 'seg-*.mps' |
Sort-Object @{Expression={([int]([regex]::match($_.Name, 'seg-(d*).mps')).Groups[1].Value)}} |
ForEach-Object { $_.Name }
'init.mp4 ' + $segments -join ' '
Then, use this batch file to run it. When the COPY command looks correct, remove the ECHO at the beginning of the line.
FOR /F "delims=" %%f IN ('powershell -NoProfile -File .mp4match.ps1') DO (
SET "FILE_LIST=%%f"
)
IF EXIST ".source.mp4" (DEL ".source.mp4")
COPY /Y %FILE_LIST% source.mp4
answered Nov 19 '18 at 1:38
litlit
5,57743052
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
so, my english dont help...
but, i think that your need rename files:
1 - 9 to 001 - 009:
10 - 99 to 010 - 099:
in commandline:
for /l %l in (1 1 9) do ren seg-%l.m4s seg-00%l.m4s
for /l %l in (10 1 99) do ren seg-%l.m4s seg-0%l.m4s
in batch file :
for /l %%l in (1 1 9) do ren seg-%%l.m4s seg-00%%l.m4s
for /l %%l in (10 1 99) do ren seg-%%l.m4s seg-0%%l.m4s
After this, run your code:
copy /b init.mp4 + seg-*.m4s source.mp4
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
add a comment |
0
so, my english dont help...
but, i think that your need rename files:
1 - 9 to 001 - 009:
10 - 99 to 010 - 099:
in commandline:
for /l %l in (1 1 9) do ren seg-%l.m4s seg-00%l.m4s
for /l %l in (10 1 99) do ren seg-%l.m4s seg-0%l.m4s
in batch file :
for /l %%l in (1 1 9) do ren seg-%%l.m4s seg-00%%l.m4s
for /l %%l in (10 1 99) do ren seg-%%l.m4s seg-0%%l.m4s
After this, run your code:
copy /b init.mp4 + seg-*.m4s source.mp4
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
add a comment |
0
0
0
so, my english dont help...
but, i think that your need rename files:
1 - 9 to 001 - 009:
10 - 99 to 010 - 099:
in commandline:
for /l %l in (1 1 9) do ren seg-%l.m4s seg-00%l.m4s
for /l %l in (10 1 99) do ren seg-%l.m4s seg-0%l.m4s
in batch file :
for /l %%l in (1 1 9) do ren seg-%%l.m4s seg-00%%l.m4s
for /l %%l in (10 1 99) do ren seg-%%l.m4s seg-0%%l.m4s
After this, run your code:
copy /b init.mp4 + seg-*.m4s source.mp4
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
so, my english dont help...
but, i think that your need rename files:
1 - 9 to 001 - 009:
10 - 99 to 010 - 099:
in commandline:
for /l %l in (1 1 9) do ren seg-%l.m4s seg-00%l.m4s
for /l %l in (10 1 99) do ren seg-%l.m4s seg-0%l.m4s
in batch file :
for /l %%l in (1 1 9) do ren seg-%%l.m4s seg-00%%l.m4s
for /l %%l in (10 1 99) do ren seg-%%l.m4s seg-0%%l.m4s
After this, run your code:
copy /b init.mp4 + seg-*.m4s source.mp4
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
edited Jan 16 at 14:34
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
answered Nov 19 '18 at 0:01
kaputtzkaputtz
198312
198312
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
add a comment |
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
2
2
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
no, the OP needs to combine those files into one
– phuclv
Nov 19 '18 at 3:08
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
@phclv- nOp- need put files in right order first, then merge files.
– kaputtz
Nov 19 '18 at 9:52
2
2
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
no. he doesn't need to rename the files. And you only add the merge part after my comment
– phuclv
Nov 19 '18 at 10:19
add a comment |
2
A very simple pure Batch-file solution:
@echo off
setlocal EnableDelayedExpansion
rem Sort file names in numerical order
for /F "tokens=1,2 delims=-." %%a in ('dir /B *.m4s') do (
set /A "num=1000+%%b"
set "file[!num!]=%%a-%%b.m4s"
)
rem Create the ordered list
set "files=init.mp4"
for /F "tokens=2 delims==" %%a in ('set file[') do set "files=!files! + %%a"
rem Do it
copy /B %files% source.mp4
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
@DodgyCodeException: With 3 digits, each+ seg-123.m4sfile name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...
– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your firstfor /fshould use a command rather than a file spec?
– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!:(Just fixed...
– Aacini
Nov 19 '18 at 18:41
add a comment |
2
A very simple pure Batch-file solution:
@echo off
setlocal EnableDelayedExpansion
rem Sort file names in numerical order
for /F "tokens=1,2 delims=-." %%a in ('dir /B *.m4s') do (
set /A "num=1000+%%b"
set "file[!num!]=%%a-%%b.m4s"
)
rem Create the ordered list
set "files=init.mp4"
for /F "tokens=2 delims==" %%a in ('set file[') do set "files=!files! + %%a"
rem Do it
copy /B %files% source.mp4
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
@DodgyCodeException: With 3 digits, each+ seg-123.m4sfile name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...
– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your firstfor /fshould use a command rather than a file spec?
– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!:(Just fixed...
– Aacini
Nov 19 '18 at 18:41
add a comment |
2
2
2
A very simple pure Batch-file solution:
@echo off
setlocal EnableDelayedExpansion
rem Sort file names in numerical order
for /F "tokens=1,2 delims=-." %%a in ('dir /B *.m4s') do (
set /A "num=1000+%%b"
set "file[!num!]=%%a-%%b.m4s"
)
rem Create the ordered list
set "files=init.mp4"
for /F "tokens=2 delims==" %%a in ('set file[') do set "files=!files! + %%a"
rem Do it
copy /B %files% source.mp4
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
A very simple pure Batch-file solution:
@echo off
setlocal EnableDelayedExpansion
rem Sort file names in numerical order
for /F "tokens=1,2 delims=-." %%a in ('dir /B *.m4s') do (
set /A "num=1000+%%b"
set "file[!num!]=%%a-%%b.m4s"
)
rem Create the ordered list
set "files=init.mp4"
for /F "tokens=2 delims==" %%a in ('set file[') do set "files=!files! + %%a"
rem Do it
copy /B %files% source.mp4
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
edited Nov 19 '18 at 18:40
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
answered Nov 19 '18 at 4:15
AaciniAacini
51.3k75274
51.3k75274
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
@DodgyCodeException: With 3 digits, each+ seg-123.m4sfile name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...
– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your firstfor /fshould use a command rather than a file spec?
– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!:(Just fixed...
– Aacini
Nov 19 '18 at 18:41
add a comment |
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
@DodgyCodeException: With 3 digits, each+ seg-123.m4sfile name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...
– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your firstfor /fshould use a command rather than a file spec?
– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!:(Just fixed...
– Aacini
Nov 19 '18 at 18:41
1
1
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
Problem is, if there are enough files, you'll reach the 8k command line length limit.
– DodgyCodeException
Nov 19 '18 at 10:12
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
after running this batch script i got source.mp4 of size 1kb
– Rajorshi Roy
Nov 19 '18 at 12:54
1
1
@DodgyCodeException: With 3 digits, each
+ seg-123.m4s file name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...– Aacini
Nov 19 '18 at 17:05
@DodgyCodeException: With 3 digits, each
+ seg-123.m4s file name takes 14 chars, so this method may manage a max of 8192/14 = 585 files. The OP specified 275 files, so...– Aacini
Nov 19 '18 at 17:05
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your first
for /f should use a command rather than a file spec?– DodgyCodeException
Nov 19 '18 at 17:14
Good point. But why is the OP getting a resulting file size of only 1 KB? Maybe your first
for /f should use a command rather than a file spec?– DodgyCodeException
Nov 19 '18 at 17:14
@DodgyCodeException: Ops! You are right!
:( Just fixed...– Aacini
Nov 19 '18 at 18:41
@DodgyCodeException: Ops! You are right!
:( Just fixed...– Aacini
Nov 19 '18 at 18:41
add a comment |
1
This can be done fairly easily. Put this code in a file named mp4match.ps1. The key to this code that the sorting is done on the numeric value in the filename. It is extracted by a regex.
$segments = Get-ChildItem -File -Filter 'seg-*.mps' |
Sort-Object @{Expression={([int]([regex]::match($_.Name, 'seg-(d*).mps')).Groups[1].Value)}} |
ForEach-Object { $_.Name }
'init.mp4 ' + $segments -join ' '
Then, use this batch file to run it. When the COPY command looks correct, remove the ECHO at the beginning of the line.
FOR /F "delims=" %%f IN ('powershell -NoProfile -File .mp4match.ps1') DO (
SET "FILE_LIST=%%f"
)
IF EXIST ".source.mp4" (DEL ".source.mp4")
COPY /Y %FILE_LIST% source.mp4
answered Nov 19 '18 at 1:38
litlit
5,57743052
add a comment |
1
This can be done fairly easily. Put this code in a file named mp4match.ps1. The key to this code that the sorting is done on the numeric value in the filename. It is extracted by a regex.
$segments = Get-ChildItem -File -Filter 'seg-*.mps' |
Sort-Object @{Expression={([int]([regex]::match($_.Name, 'seg-(d*).mps')).Groups[1].Value)}} |
ForEach-Object { $_.Name }
'init.mp4 ' + $segments -join ' '
Then, use this batch file to run it. When the COPY command looks correct, remove the ECHO at the beginning of the line.
FOR /F "delims=" %%f IN ('powershell -NoProfile -File .mp4match.ps1') DO (
SET "FILE_LIST=%%f"
)
IF EXIST ".source.mp4" (DEL ".source.mp4")
COPY /Y %FILE_LIST% source.mp4
answered Nov 19 '18 at 1:38
litlit
5,57743052
add a comment |
1
1
1
This can be done fairly easily. Put this code in a file named mp4match.ps1. The key to this code that the sorting is done on the numeric value in the filename. It is extracted by a regex.
$segments = Get-ChildItem -File -Filter 'seg-*.mps' |
Sort-Object @{Expression={([int]([regex]::match($_.Name, 'seg-(d*).mps')).Groups[1].Value)}} |
ForEach-Object { $_.Name }
'init.mp4 ' + $segments -join ' '
Then, use this batch file to run it. When the COPY command looks correct, remove the ECHO at the beginning of the line.
FOR /F "delims=" %%f IN ('powershell -NoProfile -File .mp4match.ps1') DO (
SET "FILE_LIST=%%f"
)
IF EXIST ".source.mp4" (DEL ".source.mp4")
COPY /Y %FILE_LIST% source.mp4
answered Nov 19 '18 at 1:38
litlit
5,57743052
This can be done fairly easily. Put this code in a file named mp4match.ps1. The key to this code that the sorting is done on the numeric value in the filename. It is extracted by a regex.
$segments = Get-ChildItem -File -Filter 'seg-*.mps' |
Sort-Object @{Expression={([int]([regex]::match($_.Name, 'seg-(d*).mps')).Groups[1].Value)}} |
ForEach-Object { $_.Name }
'init.mp4 ' + $segments -join ' '
Then, use this batch file to run it. When the COPY command looks correct, remove the ECHO at the beginning of the line.
FOR /F "delims=" %%f IN ('powershell -NoProfile -File .mp4match.ps1') DO (
SET "FILE_LIST=%%f"
)
IF EXIST ".source.mp4" (DEL ".source.mp4")
COPY /Y %FILE_LIST% source.mp4
answered Nov 19 '18 at 1:38
litlit
5,57743052
edited Nov 19 '18 at 3:02
answered Nov 19 '18 at 1:38
litlit
5,57743052
answered Nov 19 '18 at 1:38
litlit
5,57743052
answered Nov 19 '18 at 1:38
litlit
5,57743052
5,57743052
add a comment |
add a comment |
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1
The core problem is that cmd.exe is sorting them as character strings. Is there any way you could get all files named with a three (3) digit value? seg-001.mp4, seg-020.mp4, etc.
– lit
Nov 18 '18 at 22:42
Thanks for the tip. I am actually using a python script to download these segments. So i can easily save them with whatever name I want. I think this solves my problem. thanks again
– Rajorshi Roy
Nov 19 '18 at 11:49
If you're already using a Python script, why not use the same script to append each segment to the main file right from the source? That would save having to create an additional script to do the merge.
– DodgyCodeException
Nov 19 '18 at 13:41
I found the command line option to be faster. Is there any way to merge the files faster using python only?
– Rajorshi Roy
Nov 20 '18 at 14:09
p.s. I am not creating a separate batch script to merge. I am calling the
os.system( )function in python– Rajorshi Roy
Nov 20 '18 at 14:12