@spitsyn.andrey @GG how can I use custom script for proxy files creation inside > Cinelerra? Or use ffmpeg's scale_vaapi filter if vaapi used. > > Proxies can not be run easily by remote control or from a shell script. GG does not understand why you would not just use the Settings->Proxy Settings? However, there is nothing special about the actual proxy files -- you can just create the scaled down size with an ffmpeg command line and give it the name which would have been generated by Cinelerra if you had created them that way. For example, test.mp4 would just be test.proxy2-mp4.mpeg if you chose mpeg as the format file type (with mpeg becoming the extension) at 1/2 scale (the 1/2 scale shows as the 2 in "proxy2" of the new file name). VERY IMPORTANT - you must use the ffmpeg binary in Cinelerra's thirdparty directory. Example using mp4:
./ffmpeg -i /root/media/tutorial.mp4 -s 720x540 /root/media/tutorial.proxy2-mp4.mp4 Now when you load the tutorial.mp4 video, and then do Settings->Proxy Settings, the proxy file is already created and will load. ------------------------------------------------------------------------------------------------------------------------------------------- We tried a couple of examples of using scale_vaapi from the ffmpeg command line and it always failed for us on a Intel laptop with Broadwell graphics board. For example, something like the following: ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -i input.mp4 -vf 'scale_vaapi=1280:720'.. out.mp4 and another line from Cinelerra's thirdparty/ffmpeg directory documentation. We also tried using a .opts file for the import. For example, for test.mp4, we created a test.opts file containing: video_filter=scale_vaapi=1280:720 and that gave us more error messages. Question gg has - can you give us a good working ffmpeg command line using scale_vaapi (again you must use the ffmpeg binary in Cinelerra's thirdparty directory) so we can see it that works for us? Also, why rescale using vaapi instead of using a plugin? Is it faster?
-- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
