The quality of source and output video files are same.Īfter that I have used ffmpeg tool and x265 with no crf option but I have used -preset slow and this time the output video file size is 96 mb. After that I have seen the properties of output video file using media info tool and found that the video bitrate as 160 kbps. The quality of source and output video files are same.Īfter that I have used ffmpeg tool and x265 with crf 28 option this time the output video file size is 95 mb. After that I have seen the properties of the output video file with media info tool and found that video bitrate as 190 kbps and audio bitrate as 50 kbps. When I have used ffmpeg and x265, with crf 24 option, fdkaac with audio bitrate as 50 kbps. I have tried to compress this file in a number of ways.
XMEDIA RECODE AAC VS FDK AAC MP4
Suppose I have a x264 video mp4 file with video bitrate as 128 kbps and audio bitrate as 128 kbps and memory space of 93 mb. If you play any video file you are going to view video and at the same time you are going to listen audio. There are two streams in any video file they are video and audio. The source file and compressed file are of same size and some times output video file size is greater than source file. I thought that converting x264 mp4 to x265 mp4 file would reduce the memory space to half but it's not true. I have created a project in source forge and I am providing the link below I am providing these scripts to help you in any way if you are working with compression of video files. I am providing the scripts, ffmpeg builds which are compiled by me from latest git repository. I have created these scripts according to my needs like I have not included option for intel quick sync as I don't have such new processor.So if you want create your own version with modifications and run and distribute to others. If you don't do this cpu usage may be upto 99 percent which will generate much heat and destroy the PC. I am finally suggesting you to modify the cpucount option to your processor core count -1. The third script takes less time and less memory space but the quality is unknown. The second script that used CRF takes lot of memory space with maximum quality and takes less time. In the above scripts the first one uses two pass encoding to compress video file with maximum quality but takes lot of time and produces lowest possible memory size. I am providing three scripts one which uses 2 pass encoding and another which uses CRF encoding and another which doesn't use any of the above two. After that I have used fdkaac which is the best audio codec developed which uses less memory for quality audio. After that I have used x265 which is the latest video standard developed which uses less memory for quality videos. In these scripts I have used ffmpeg tool which is used in many projects and even in YouTube. I have read a lot of documents and tutorials related to x265 including It uses all the system resources to compress videos one by one with optimal quality. The script I am providing is easy to understand and use. There are a number of scripts available for ffmpeg but they may be difficult to understand to you. But all of the guis can't run according to your needs for example I have used one ffmpeg gui where it tries to encode 3 to 4 videos at a time but if there is any power failure again you must start the process from the beginning. Many of you may think as there are many ffmpeg guis and scripts available why I must use the current one. The system requirements are working Linux PC, ffmpeg built with libfdk\_aac and libx265 and gpl, opencl, opengl support. Simply place the script in the folder which you have mp4 videos you want to compress and after that give execution permission and after that execute it in terminal emulator. This script can be modified according to your needs and run. I have developed a small shell script to compress these mp4 videos using ffmpeg command and x265 video codec, fdkaac. But all of these have their own pros and cons. So I tried a lot to compress these files using ffmpeg command and some guis like handbrake, X media recode etc.
XMEDIA RECODE AAC VS FDK AAC ANDROID
Generally these files are of large size specifically captured from android smartphone camera. I have compressed these files using ffmpeg script and I am providing to you which may help you to do the same. Hi I am Rupesh from India and I have some mp4 video files which are downloaded from YouTube and captured from android smartphone camera.
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