Two-Pass: Requires a bitrate. This defines the quality of the video. Youtube and Vimeo usually reduce your bitrate to 25mbs. So if it is higher, it will be compressed by these websites.
Lower bitrate means lower files size.
- (Size in Megabytes * 8192) / Total Length in Seconds = Available bandwith
- Available bandwith - Audio Bitrate = Video Bitrate
- (200 MiB * 8192 [converts MiB to kBit]) / 600 seconds = ~2730 kBit/s total bitrate
- 2730 - 320 kBit/s (desired audio bitrate) = 2410 kBit/s video bitrate
-
Download FFMPEG fro Windows
-
Extract and go to "bin" folder.
-
In "bin" hold Shift+RightClick and select Open PowerShell...
-
For pass 1:
.\ffmpeg.exe -thread_queue_size 512 -y -r 24 -i "D:\%04d.png" -i "D:\Max.wav" -c:v libx264 -pix_fmt yuv420p -vprofile high422 -vlevel 4.2 -preset veryslow -b:v 2410k -c:a aac -strict experimental -b:a 320k -pass 1 -f mp4 NULL -
For pass 2:
.\ffmpeg.exe -thread_queue_size 512 -r 24 "D:\%04d.png" -i "D:\Max.wav" -c:v libx264 -pix_fmt yuv420p -vprofile high422 -vlevel 4.2 -preset veryslow -b:v 2410k -c:a aac -strict experimental -b:a 320k -pass 2 "D:\output.mp4"
-
Lossy CRF (1-51):
.\ffmpeg.exe -thread_queue_size 512 -r 24 -i "D:\%04d.png" -i "D:\Max.wav" -c:v libx264 -pix_fmt yuv420p -vprofile high422 -vlevel 4.2 -preset veryslow -crf 2 -c:a aac -strict experimental -b:a 320k "D:\crf2_output.mp4" -
Lossless CRF 0 H264:
.\ffmpeg.exe -thread_queue_size 512 -r 24 -i "D:\%04d.png" -i "D:\Max.wav" -c:v libx264 -pix_fmt yuv444p -vprofile high444 -vlevel 5.1 -preset veryslow -crf 0 -c:a aac -strict experimental -b:a 320k "D:\crf0_output.mp4" -
Lossless CRF 0 H265:
.\ffmpeg.exe -thread_queue_size 512 -r 24 -i "D:\%04d.png" -i "D:\Max.wav" -c:v libx265 -preset veryslow -crf 0 -c:a aac -strict experimental -b:a 320k "D:\crf0_output.mp4"
Framerate of Source: -r 24
Source Video: -i "D:\%04d.png" (Image Sequence eg 0001.png)
Source Audio: -i "D:\Max.wav"
Codec Video: -c:v libx264
Pixel Format: -pix_fmt yuv420p
H264 Profile: -vprofile high422
H264 Level: -vlevel 4.2
Compression (Loseless): -preset veryslow
Bitrate Video: -b:v 2410k (Calculated as above)
Pass Number: -pass 1
Codec Audio: -c:a aac
Needed For AAC: -strict experimental
Bitrate Audio: -b:a 320k (Desired audio rate)
Format: -f mp4
According to https://trac.ffmpeg.org/wiki/Encode/H.264
the conversion factor for bitrates should be 8388.608.
In ffmpeg, bitrates are given in "kb/s" and according to the documentation, kb is 1000 bits. But using a factor of 8192 gives you kibibits (1024 bits).