And yet another suggestion [FRAMES] and [SAVE AS BMP].
I'm working with long videos now and I need to select and saveseveral hundred frames from these videos (kind of BMP thumbnails). First of all, I find it more convenient to refer to singe frames by a frame number rather than by time. If I need to remember a single frame to get back to it later, I'd rather write down 3652 as a frame number on a paper, than something like 00:02:11.633. Virtual Dub shows both time and frame number, but I'm not sure if it is possible with all file formats (Vdub works with AVI only). If it is possible, having this reference would be useful. And also a possibility to jump to a frame number (like "Go to time" button that we already have).
The next problem is that the frame saving process is too much boring. It's OK if we need to save one frame, but no more than that... When we press Ctrl-M, the default name shows 20161001_122859.bmp, but it is only fine for one file. If we save many files, we'll have to make up some unique names manually and this is not cool at all. As a solution, I suggest to set default file name to "sourcename_framenumber.bmp" when saving a single image. So, if we save many images, the names would be like 20161001_122859_1.bmp, 20161001_122859_554.bmp, 20161001_122859_15852.bmp... Alternatively (if it's hard to calculate the frame number), time offset of the frame can be used as a suffix making the fname unique (something like 20161001_122859_00_02_11_633.bmp). The work will become even faster if we could save frames without showing the confirmation window at all (as an option). Or maybe ask the target folder and file name template once for the first image, and then name and save the following frames automatically. I know this is not easy to implement and the perfect solution is not obvious, but again, these are just my thoughts and nobody has to do anything to make them real if he doesn't want to. By now I found another solution, I just used ffmpeg.exe to extract all I-frames as BMP files and now review them and select the images that I need to keep and delete the others. This is really faster than saving single images with Ctrl-M in Avidemux and enter and confirm file names for every file, at least now.