Note: You can also choose your own encoding parameters and modify it to your liking and requirements. map -c:v:2 libx264 -x264-params "nal-hrd=cbr:force-cfr=1" -b:v:2 1M -maxrate:v:2 1M -minrate:v:2 1M -bufsize:v:2 1M -preset slow -g 48 -sc_threshold 0 -keyint_min 48 \Ĭan you see what’s been done here? We have taken the three variables, , and as our inputs and transcoded each of the inputs using libx264‘s slow preset, and at the desired bitrates. Let’s use those directly as inputs for the transcoding step. Remember, that we have already scaled the video at the required resolutions and stored the output in, , and. Next, we move on to Steps 3 & 4 – we have to transcode the video to multiple bitrates as is typically done for ABR Video Streaming. Transcode a Video to Multiple Bitrates for HLS Packaging using FFmpeg For more on this topic, please check our tutorial on resizing and scaling videos using FFmpeg. Else, you can force it and apply letterboxing if necessary. Note, here we are assuming that the scaling process is going to retain the aspect ratio. Here, we are scaling the input video to 1080p, 720p, and 360p.Īnd,, , are variables that contain the output of the scaling process. Each of these are taken as inputs to a scaling function in FFmpeg that accepts a height and width number. In our case, there is only one video stream and this is split into 3 outputs. refers to the input file’s first video stream. This can be done in a single command as follows – ffmpeg -i brooklynsfinest_clip_1080p.mp4 \ Okay, Step 1 and 2 involve reading a video from disk and scaling it to multiple resolutions. Now, let’s tackle this step by step, shall we? Resize a Video to Multiple Resolutions using FFmpeg
Transcode a Video to Multiple Bitrates for HLS Packaging using FFmpeg.Resize a Video to Multiple Resolutions using FFmpeg.Basic Steps to HLS Packaging using FFmpeg.
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HOW TO USE FFMPEG REDDIT ANDROID
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