Python console utility to compress video files by converting them to H.265 codec using FFmpeg. Supports both command line arguments and user input (user input is only available if not all variables are covered by command line arguments)
Tested only on Windows 10 (I think it works in ubuntu too, but may not resolve some input paths)
There may be some bugs with the rendering of the progress bar because I'm not too good with the command line cursor in python. (where is my SetCursorPosition from C#?)
A speed test was carried out for compressing video files of approximately 55mb in size, with the AVC2 codec and a duration of about 4 minutes. AMD Ryzen 7 3700x 8/16 used as CPU
| Threads | Files | Elapsed time | Description |
|---|---|---|---|
| 1 | 4 | 02m 27s | Just a single thread compression |
| 2 | 4 | 01m 46s | Threads covered half of files count |
| 4 | 4 | 01m 36s | Threads covered all provided files |
| 16 | 4 | 01m 35s | It does not make sense to specify more threads than files in the source, extra threads will not be used anyway |
The table below shows the percentage of compression speed for different number of streams (single-thread mode and multi-thread modes)
| Base | Comparison | Result |
|---|---|---|
| Single thread | Multiple threads (4) | +34% |
| Single thread | Multiple threads (2) | +28% |
| Multiple threads (2) | Multiple threads (4) | +13% |
As you can see, in any case use the multiple threads provides approximately 28% speed increase, if used more threads the speed also increases, however, with each new thread, the percentage drops
To automate the use of this utility, command line arguments are provided that allow you to disable manual entry of specified variables.
| Argument | Shortcut | Type | Description |
|---|---|---|---|
| --force | -f | bool | Force compress files even if files already has compressed version |
| --input | -i | str | Target directory or file |
| --output | -o | str | Relative path for compressed files |
| --threads | -t | int | Threads count for compression |
| --no-unicode | Remove unicode symbols from output |
re-knownout - https://github.com/re-knownout/
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