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When converting an array of jpegs to a video file (ogg format) I have been using the -crf option. What are the valid ranges for -crf? Currently I am using 23.
I cannot find the bookmark I read to know what this flag does and I have spent some time Googling around.
These are the arguments I am using at the moment:
-f image2 -r 10 -i " + _sourcePath + @"\img%05d.jpg -crf 18 -y -r 10 " + _destPath + "\\" + _filename + ".ogg"
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I don't know any thing about this command, but it's very well documented here: http://www.ffmpeg.org/ffmpeg.html.
– Ben Plont – 2013-11-18T18:04:05.2871Are you using libx264 (for H.264 video) or libvpx (for VP8 video)? Please show your ffmpeg command and the complete console output. – llogan – 2013-11-18T18:11:40.337
Hi, sorry for the delay. Had to walk the dog. I will amend my question. Thanks – Andrew Simpson – 2013-11-18T19:04:00.370
1So, the question is if you want to keep this question rather general to CRF, or if you have a specific issue you need help with. In the latter case we'd need to get the full commandline output (i.e. everything from "ffmpeg version…" to the last bit) and the actual command you're using, but it'd unfortunately render the existing answers useless. You might want to ask a new question if you're facing a concrete issue. – slhck – 2013-11-18T19:59:01.773
@slhck Hi, you are absolutely right. I do need to learn to be more specific and comprehensive in future. As it was your answer fitted my needs more than everyone else's but everyone else's were also informative. I will tread more carefully in the future :) Thank you for your time. Much appreciated. – Andrew Simpson – 2013-11-19T07:43:41.320