Any ideas about a good 1080p to 720p converter that is able to convert a video of 90 minutes in less than several hours? (maybe like in 2, 3 or 4 hours ;-)
The compression of a file is H.264/MPEG-4 AVC.
closed as off topic by Journeyman Geek♦, Brad Patton, Simon, Tog, 8088 Apr 24 '13 at 16:04
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x264 has a reputation of being fast and efficient. The speed can be tuned by presets that are called, for example, "fast". They range from "ultrafast" to "veryslow". You can check x264's help by calling
Here are the flags for "ultrafast". They disable some advanced encoding functions that require processing time. Encoding in "ultrafast" mode will not be as efficient in terms of bits used, and with a fixed bit rate, you'll lose some quality. But generally, it shouldn't matter as much.
You can for example enter them in Handbrake's option string when looking under "Advanced":
Just copy this string, found here:
Don't forget to rescale by going to the Picture Settings.
Or, use them in FFmpeg by simply calling the right preset:
If you are looking for something like real-time speeds or better, you could look into using your GPU for encoding.
Here's an article titled "H.264 encoding - CPU vs GPU: Nvidia CUDA, AMD Stream, Intel MediaSDK and x264" that you might be interested in reading.
The quality you'll get from a GPU based encoder is nowhere near what x264 can deliver (sometimes destroying frames completely). However, if you're using the fastest settings you can configure for x264, it might be worth comparing those results.
I use Handbrake for all my conversions. But I can't tell how fast will it be for you.