Script to virtualdub

[jebaniec]

Hello.
I have 800 files with fps problem: https://forum.videohelp.com/threads/412168-Editing-web-camera-file
I use ffmpeg command to fix it and show it as 8 fps.
VirtualDub 1.10.4, however, can solve this problem.
I load the file. I choose Video->Direct Stream Copy, then Video->Frame Rate->Change so video and audio duration match
and File->Save as Avi and put name.
File works fine.
However, processing about 500 files manually like this is getting me tired. Maybe someone has a ready script that would do it for me?

[hello_hello]

Can you upload another sample. I tried remuxing the sample you uploaded as an MKV with ffmpeg and the video ended up with a frame rate of 15fps and the length of both the audio and video was the same. I tried again remuxing as an AVI and it was no different. Maybe you should upload a sample that your ffmpeg command line in the other thread wouldn't fix for someone to look at.

MKVToolNix won't remux it as it says the audio is unsupported. Maybe it doesn't support 8 bit PCM (wave files).

The command lines I used for remuxing are actually AnotherGUI command lines for ffmepg.
AnotherGUI can be handy for batch processing with command-line programs, including VirtualDub apparently, but I've never used VirtualDub via a command line myself.

AVI
-i "<FullSourceFileName>" -y -threads 1 -vcodec copy -acodec copy -bsf:v h264_mp4toannexb -sn "<OutputPath><OutputFileName>.avi"
MKV
-i "<FullSourceFileName>" -y -threads 1 -vcodec copy -acodec copy -scodec copy -map_metadata -1 "<OutputPath><OutputFileName>.mkv"

Once they're created, you can drag and drop a bunch of files onto AnotherGUI, use Ctrl+A to highlight them all if need be to set an output location, the tell AnotherGUI to run them.
For remuxing files it's probably best to only allow AnotherGUI to use a single thread in Preferences, otherwise I think the default is as many file simultaneously as you have CPU cores.

mp4toannexb & map_metadata probably aren't needed. They just happen to be included in the ffmpeg presets I'd already created.

For VirtualDub2 (I don't know if it's the same for the original VirtualDub) you should be able to set it up, including the frame rate change, and then use "File/Queue Batch Operation/Batch Wizard" to load a bunch of files for batch processing.

The AVI I created from your sample using the above AnotherGUI/ffmpeg command line is attached.

From MediaInfo.

General
Complete name                            : /media/NVME1/1698852005.avi
Format                                   : AVI
Format/Info                              : Audio Video Interleave
Format settings                          : WaveFormatEx
File size                                : 729 KiB
Duration                                 : 30 s 0 ms
Overall bit rate                         : 199 kb/s
Frame rate                               : 15.000 FPS
Writing application                      : Lavf60.17.100

Video
ID                                       : 0
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4
Format settings                          : CABAC / 1 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 1 frame
Format settings, GOP                     : M=1, N=30
Codec ID                                 : H264
Duration                                 : 30 s 0 ms
Bit rate                                 : 125 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 15.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.004
Stream size                              : 457 KiB (63%)

Audio
ID                                       : 1
Format                                   : ADPCM
Format profile                           : A-Law
Codec ID                                 : 6
Codec ID/Hint                            : CCITT
Duration                                 : 30 s 0 ms
Bit rate mode                            : Constant
Bit rate                                 : 64.0 kb/s
Channel(s)                               : 1 channel
Sampling rate                            : 8 000 Hz
Bit depth                                : 8 bits
Stream size                              : 234 KiB (32%)
Interleave, duration                     : 40  ms (0.60 video frame)