thumbnails from video files

[pBS]

oh and add -deinterlace as it makes for better snaps...forgot about that..

[sub]

Strangely by adjusting the order of the parameters to the following made it fast. Same paremeters, different order.

Code:

<CaptureScreenshotCmdLine>-y -ss {SECONDS} -vframes 1 -i "{SOURCE_FILE}" -f image2 -s 160x120 "{DEST_FILE}"</CaptureScreenshotCmdLine>

[sub]

What is the version of ffmpeg that you are using. I have found that certain versions do not take the same commandline options such as -f or -img. Also, the output seems to be always named with a number such as img00001.jpg. I want to name it the same as the video filename so it comes out as a thumbnail image in gbpvr/pvrx2. Thanks

Are you using the built in mechanism? If so, it should produce a file with the filename the same as the video but .jpg extension.

[mrxtc89117]

Yes, these are the parameters I use and it works very well. Thanks

ffmpeg -y -ss 10 -vframes 1 -i "%*.mov" -f image2 -s 200x130 "%*.jpg"

Now if I can just figure out how to write a batch file and go into all the subdirectories and run this command for each video file it sees.

[jksmurf]

Yes, these are the parameters I use and it works very well. Thanks

ffmpeg -y -ss 10 -vframes 1 -i "%*.mov" -f image2 -s 200x130 "%*.jpg"

Now if I can just figure out how to write a batch file and go into all the subdirectories and run this command for each video file it sees.

What would be very cool would be if one of you could X-ref this with Comskips estimating routines, as the frames of one of the show lead-ins that comskip recognizes would make a great icon (for me).

k.

[pBS]

Strangely by adjusting the order of the parameters to the following made it fast. Same paremeters, different order.

Code:

<CaptureScreenshotCmdLine>-y -ss {SECONDS} -vframes 1 -i "{SOURCE_FILE}" -f image2 -s 160x120 "{DEST_FILE}"</CaptureScreenshotCmdLine>

ahhh,it's cuz you had the vframes 1 after the input file..
as i understand it, the new ffmpeg syntax changed to having all parameters before their intended target, so the input options have to be before the -i and all output opts just before the output, or at least has to be after the input..

[input opts] -i file [output opts] outputfile
so the vframes needs to be before the input, and sizing after the input..

glad it works well for you now..really comes in handy..

[pBS]

in showburner i use that very thing..[actually i tried out several methods in fallback to lesser accurate ones]
i had to write a program to convert the comskip times to seconds so i could use with this parameter, also i made one where you would watch the video to where you wanted the snap in GPBVR and stop, the run batch and it snaps last viewed position.. [search the forums, i made a complete snap maker batch for use from video library transcode buttons,you can select your snap points]

[pBS]

What would be very cool would be if one of you could X-ref this with Comskips estimating routines, as the frames of one of the show lead-ins that comskip recognizes would make a great icon (for me).

k.

Your wish is my command... [actually wanted to make one of these anyways]
batch file only.,..
usage: save as snap.bat and type [snap.bat filename.mpg]
it will save as filename.jpg in that dir,at native mpeg resolution,a snap 2 secs after first commercial ends..
instructions in batch for adjustments..

Code:

@echo off
cls
rem     Set "line" to comskip break # you want, starting at line 3 for first commercial..4 for second,etc..
set line=4
set seconds=0
if exist "%~dpn1.txt" for /f "usebackq tokens=1,2 skip=%line%" %%c in ("%~dpn1.txt") do (
::          Adjust below line for exact snap time, i use + 2 as + 0 usually is black frame..
set /a seconds= %%d * 100 / 2997 + 2
goto :next
)    
:next
echo.
Echo Snapping from %seconds% into movie.
echo.
"C:\Program Files\DEVNZ\Gbpvr\Third Party\FFmpeg\ffmpeg.exe"  -y -ss %seconds% -vframes 2  -i "%~1" -f image2  "%~dpn1.jpg"
echo.
echo Done! "%~dpn1.jpg" %seconds%
rem START "image" "%~dpn1.jpg"
rem use the START image line to auto-view it afterwards...

Enjoy!

[mila06]

Now if I can just figure out how to write a batch file and go into all the subdirectories and run this command for each video file it sees.

If you use pBS' snap.bat, this code will go through dir and sub-dirs and create a jpg for all recordings/videos:

Code:

FOR /R D:\Download\video\ %%G IN (*.mpg *.avi *.wmv *.mpeg *.mov) DO D:\Download\video\snap "%%G"

[jksmurf]

Your wish is my command... [actually wanted to make one of these anyways]
batch file only.,..

Enjoy!

Thank you pBs :-) ..I'll give it a whirl ..

k.