batch to do a math formula time notation

[marcorocchini]

Hi ****
please consider a c:\duration.txt file that contain only this text:

0:00:35.368667

or 00:00:35.368667

0 hours, 0 minutes, 35 sec and 368667 millisec
now I would like convert this value in framenumber @ 25fps

I try:

for /f "tokens=1-4 delims=:," %%a in ('c:\duration.txt') do set /a "number_Of_Frames=((%%a00)*3600 + (%%b00)*60 + (%%c00) + (%%d0)/10 ) * 25 / 100"

echo number_Of_Frames is %number_Of_Frames%

but it don't work

How can I resolve? thanks

[LMotlow]

I don't know. But 368667 milliseconds is the same thing as 368.667 seconds, or just over 6 minutes and 8 seconds all by itself. So add that to 35 seconds in your posted figure and you have a total of 6 minutes and 41.7 seconds -- or 00:06:41.667

1000 milliseconds = 1 second. I should think that someone who lives in Europe should know what "milli" means.

[marcorocchini]

because this is a unit of misure in catSecond ^^
are slightly different

[marcorocchini]

I try also put the content of txt file in a variable %waveduration% = 0:00:35.368667

but if nececessary fot notation, I can set %waveduration% = 00:00:35.368667 (if "%%~g"=="duration" set "waveDuration=0%%~h")

however

  SET /a result=((1%waveduration:~0,2%00^) * 3600^) + ((1%waveduration:~3,2%00^) * 60^) + ((1%waveduration:~6,2%00^)^) + ((1%waveduration:~-2%0^)/10) * 25 / 100
) ELSE (SET "result=NOT defined")

but it wont' work

however I should get 884 from 0:00:35.368667 or 00:00:35.368667

[LMotlow]

Even if your cat-math 6 minutes and 41.667 seconds could work, at 25 frames per second you would have 10,042 frames.

The notation you're using isn't used for video timing by anyone in the world, including cats. Video timing is stated in two ways:

hh.mm:ss.ms
hh:mm:ss.frames

25fps video plays at 40ms per frame. So if your formula were stated in the correct format, you want 25fps frames that play for 35 seconds plus 1/368667 seconds. 25fps video frames can't play for only a part of a millisecond.
35 seconds @ 25fps = 875 frames
0.358667 seconds = 358.667 milliseconds. If 25fps plays at 40 milliseconds per frame, you would need another 8.967 frames. There's no way you can get a fractional part of a video frame to play, so you have to settle for an additional 8 frame or an additional 9 frames. But 8.967 frames is not possible.
875 + 8 frames = 883 frames. At 25 FPS, it will play for 35 seconds and 320 milliseconds -- or as your cats seem to have their own timing notation, 35.32 seconds

[jagabo]

for /f "tokens=1-4 delims=:." %%a in (duration.txt) do set /a "number_Of_Frames=((%%a00)*3600 + (%%b00)*60 + (%%c00) + (%%d)/10000) * 25 / 100"
echo number_Of_Frames is %number_Of_Frames%

[marcorocchini]

Even if your cat-math 6 minutes and 41.667 seconds could work, at 25 frames per second you would have 10,042 frames.

The notation you're using isn't used for video timing by anyone in the world, including cats. Video timing is stated in two ways:

hh.mm:ss.ms
hh:mm:ss.frames

25fps video plays at 40ms per frame. So if your formula were stated in the correct format, you want 25fps frames that play for 35 seconds plus 1/368667 seconds. 25fps video frames can't play for only a part of a millisecond.
35 seconds @ 25fps = 875 frames
0.358667 seconds = 358.667 milliseconds. If 25fps plays at 40 milliseconds per frame, you would need another 8.967 frames. There's no way you can get a fractional part of a video frame to play, so you have to settle for an additional 8 frame or an additional 9 frames. But 8.967 frames is not possible.
875 + 8 frames = 883 frames. At 25 FPS, it will play for 35 seconds and 320 milliseconds -- or as your cats seem to have their own timing notation, 35.32 seconds

mm a little complicated to understand for cats, hoewver I get the "duration" with:

  for /f "tokens=1,2 delims=^=" %%g in ('v:\automazioneclip\virtualdub\FFProbe -hide_banner -loglevel fatal -pretty  -show_streams -show_entries stream^=codec_type^,duration^,r_frame_rate^,width^,height^,sample_aspect_ratio:stream_disposition^=:format_tags^=timecode^,company_name^,product_name^,product_version "%~dp1%~n1_gen_SD.wav" 2^>^&1') DO (
       if "%%~g"=="duration" set "waveDuration=0%%~h")          	 

       echo waveduration is %waveduration%

I don't know is right this duration string

[marcorocchini]

thanks jagabo

[marcorocchini]

for /f "tokens=1-4 delims=:." %%a in (duration.txt) do set /a "number_Of_Frames=((%%a00)*3600 + (%%b00)*60 + (%%c00) + (%%d)/10000) * 25 / 100"
echo number_Of_Frames is %number_Of_Frames%

thanks, it seems working

only a thing: and if instead of the .txt I have the duration value in %waveduration% how can I put it on the command?

I have try:

 for /f "tokens=1-4 delims=:." %%a in ('%waveduration%') do set /a "number_Of_Frames=((%%a00)*3600 + (%%b00)*60 + (%%c00) + (%%d)/10000) * 25 / 100"
       echo number_Of_Frames is %number_Of_Frames%

but shure I mistake, how can i modify it?

[nic2k4]

Set /p waveduration=Enter Duration.

If you need to correct a mistake create a loop to confirm the entry before you commit

:Test
Set /p waveduration=Enter Duration
cls
echo.
echo.
echo The duration you entered is %waveduration%
echo.
set /p Te$t=Is this correct, y or n
if not %Te$t%*=y* goto :Test

Or you can combine TXT file and manual override

goto :Check
:Test
Set /p waveduration=Enter Duration
echo %waveduration%>duration.txt
:Check
cls
echo.
echo.
echo The duration is %waveduration%
echo.
set /p Te$t=Is this correct, y or n
if not %Te$t%*=y* goto :Test

And follow through with Jagabo's code. If there is no TXT file you will be given the chance to enter a value and a TXT file will be created.

[marcorocchini]

set /p ?

[marcorocchini]

mmmmm

set /p "number_Of_Frames"?

[marcorocchini]

Even if your cat-math 6 minutes and 41.667 seconds could work, at 25 frames per second you would have 10,042 frames.

The notation you're using isn't used for video timing by anyone in the world, including cats. Video timing is stated in two ways:

hh.mm:ss.ms
hh:mm:ss.frames

25fps video plays at 40ms per frame. So if your formula were stated in the correct format, you want 25fps frames that play for 35 seconds plus 1/368667 seconds. 25fps video frames can't play for only a part of a millisecond.
35 seconds @ 25fps = 875 frames
0.358667 seconds = 358.667 milliseconds. If 25fps plays at 40 milliseconds per frame, you would need another 8.967 frames. There's no way you can get a fractional part of a video frame to play, so you have to settle for an additional 8 frame or an additional 9 frames. But 8.967 frames is not possible.
875 + 8 frames = 883 frames. At 25 FPS, it will play for 35 seconds and 320 milliseconds -- or as your cats seem to have their own timing notation, 35.32 seconds

mmmm

[marcorocchini]

Set /p waveduration=Enter Duration.

If you need to correct a mistake create a loop to confirm the entry before you commit

:Test
Set /p waveduration=Enter Duration
cls
echo.
echo.
echo The duration you entered is %waveduration%
echo.
set /p Te$t=Is this correct, y or n
if not %Te$t%*=y* goto :Test

Or you can combine TXT file and manual override

goto :Check
:Test
Set /p waveduration=Enter Duration
echo %waveduration%>duration.txt
:Check
cls
echo.
echo.
echo The duration is %waveduration%
echo.
set /p Te$t=Is this correct, y or n
if not %Te$t%*=y* goto :Test

And follow through with Jagabo's code. If there is no TXT file you will be given the chance to enter a value and a TXT file will be created.

ah ok, but really, I need to batch automate. Possibly I would like do a script that don't need a manual input and that calculate the correct value, a part the case of %duration%==""

so that if %duration%=="" -->goto :eof and pause

[nic2k4]

so that if %duration%=="" -->goto :eof and pause

Should be "%duration%"==""

if exist duration.txt goto :Next
:Test
Set /p waveduration=Enter Duration
echo %waveduration%>duration.txt
cls
echo.
echo.
echo The duration is %waveduration%
echo.
set /p Te$t=Is this correct, y or n
if not %Te$t%*=y* goto :Test
:Next

Obviously your requirement for total automation takes away any correction possibility (if there's a TXT file).

[marcorocchini]

so that if %duration%=="" -->goto :eof and pause

Should be "%duration%"==""

ops, I have the cat's paw when I type in the keyboard ^^

[jagabo]

Actually, I think it's a bit ugly to append a couple zeros to the values. I'd just multiply by an extra 100:

for /f "tokens=1-4 delims=:." %%a in (duration.txt) do set /a "number_Of_Frames=((%%a)*360000 + (%%b)*6000 + (%%c)*100 + (%%d)/10000) * 25 / 100"

Or if you wanted to be more explicit:

for /f "tokens=1-4 delims=:." %%a in (duration.txt) do set /a "number_Of_Frames=((%%a)*100*3600 + (%%b)*100*60 + (%%c)*100 + (%%d)*100/1000000) * 25 / 100"

Using an environment variable rather than a file:

for /F "tokens=1-4 delims=:." %%a in ("%DURATION%") do set /a "number_Of_Frames=((%%a)*100*3600 + (%%b)*100*60 + (%%c)*100 + (%%d)*100/1000000) * 25 / 100"

One caveat: This code treats the digits to the right of the decimal point as microseconds. And it requires that there be six digits. If a program reports the time with fewer or more digits to the right of the decimal place the calculation will be wrong.

[marcorocchini]

[Attachment 28394 - Click to enlarge]
maybe this (working in windows 32)

set "wavDuration=0:09:35.368667"

for /f  "tokens=1-4 delims=:."  %%a in ('echo %wavDuration%') do (
for /f "delims=" %%x in ('powershell ^(0.%%d + ^(%%a * 3600^) + ^(%%b * 60^) + %%c^)*25') do Set "FrameCountAudio=%%x")

echo return FrameCount is %FrameCountAudio%

[ndjamena]

Dear god... I've been meaning to tell you to use Powershell instead of damn batch, you can set ffprobe AND MediaInfoCLI to output in xml format and load them AS xml structures in Powershell.

In fact, as I clicked on this thread I was planning on just writing "POWERSHELL" and walking away, or maybe I'd have just left a link to the Powershell section of SS64.com...

I do some pretty stupid things with batch, but even I know when to switch to a better language.

[marcorocchini]

Dear god...

Dear CAT please !!

[ndjamena]

"C:\Windows\System32\WindowsPowerShell\v1.0\powers hell_ise.exe"

If I had a god, it wouldn't be a damn cat!