import subprocess
import os

# Input files
input_files = [
    "wipEoutHOME.mp4"
]

output_dir = "output"
os.makedirs(output_dir, exist_ok=True)

for input_file in input_files:
    output_file = os.path.join(output_dir, os.path.basename(input_file))

    cmd = [
        "ffmpeg",
        "-i", input_file,
        # copy streams exactly as-is
        "-c", "copy",
        # DO NOT include any movflags
        # (this keeps moov atom at the end)
        "-y",
        output_file
    ]

    print("Running command:", " ".join(cmd))
    result = subprocess.run(cmd)

    if result.returncode != 0:
        print(f"Error processing {input_file}")
    else:
        print(f"Successfully created {output_file}")
        
        
# PS Home supports the following video codecs:
# MPEG-4 Part 2 MPEG-4 Video Simple Profile - up to Level 3
# MPEG-4 Part 2 MPEG-4 Video Advanced Simple Profile - up to Level 5
# MPEG-4 Part 10 AVC H.264 - up to Level 3.1
#
# AVC H.264 Level 3.1 720p, 30fps is supported only in video spaces. Other types of spaces or scene types except
# game spaces support up to Level 3.0.
#
# PS Home supports the following video container formats:
# MPEG-4 Part 14 MP4
# MPEG-2 Part 1 Transport Stream TS
#
# If you require audio, you can add an AAC audio track to the container. For more information on MPEG-4 Levels and
# supported resolutions, see Screen Memory Usage.
#
# The recommended tool for encoding video for PS Home is FFmpeg or an application based on FFmpeg, though any application which
# creates files which adhere to supported MPEG-4 standards should be compatible. For best results, make sure that both the video
# width and the video height are multiples of 16.
#
# Video is automatically stretched to fit the screen, so you dont need to encode video at the correct aspect ratio
# for it to display correctly assuming that the screen is the correct aspect ratio. This makes it easier to
# select video dimensions that are multiples of 16.
#
# Selecting an Appropriate Bit Rate
# Although PS Home is able to play video with bit rates up to the maximum allowed for each supported MPEG-4 profile level up to 8
# Mbps for MPEG-4 Video and 14 Mbps for AVC H.264, bit rates this high are rarely required to maintain a high level of video
# quality.
#
# The bit rate required will depend on the following factors:
#
# Resolution: High-resolution videos require a higher bit rate.
# Frame rate: Higher frame rates require higher bit rates, note that there is no visible benefit to using a frame rate higher
# than 29.97 frames per second fps as this is the frame rate of the PS Home client.
#
# Video format: MPEG-4 Video requires higher bit rates than AVC H.264 at the same resolution in order to maintain similar
# quality levels.
#
# Video content: Video files with large amounts of fast-moving footage will require a higher bit rate, whereas video
# containing mostly static backgrounds can use a lower bit rate without sacrificing quality.
# For these reasons, it is not possible to specify what bit rates should be used to ensure high-quality video in all situations,
# but the following examples may be used as guidelines when encoding video:
#
# Format Width Height Frame Rate fps Bit Rate Kbps
# MPEG-4 Part 2, Simple Profile 176 144 15 64
# MPEG-4 Part 2, Simple Profile 352 288 29.97 fps* 384
# MPEG-4 Part 2, Advanced Simple Profile 352 288 29.97 fps* 768
# MPEG-4 Part 2, Advanced Simple Profile 640 480 29.97 fps* 1536
# MPEG-4 Part 2, Advanced Simple Profile 720 576 29.97 fps* 2048

# MPEG-4 Part 2, Advanced Simple Profile
#    cmd = [
#        "ffmpeg",
#        "-i", input_file,
#        "-c:v", "mpeg4",
#        "-profile:v", "15",
#        "-level:v", "3",
#        "-s", "720x480",
#        "-r", "29.97",
#        "-b:v", "1024k",
#        "-c:a", "aac",
#        "-af", "volume=2.0",
#        "-y",
#        output_file
#    ]

# Format Width Height Frame Rate (fps) Bit Rate (Kbps)
# MPEG-4 Part 10 (AVC/H.264) 320 240 29.97 fps* 256
# MPEG-4 Part 10 (AVC/H.264) 640 480 29.97 fps* 768
# MPEG-4 Part 10 (AVC/H.264) 720 480 29.97 fps* 1024
# MPEG-4 Part 10 (AVC/H.264) 1280 720 29.97 fps* 3072

# https://trac.ffmpeg.org/wiki/Encode/H.264
# Preset			Encode speed										File size / compression efficiency
# ultrafast	Very fast 											Largest file size / least efficient
# superfast	Faster													Larger file size
# veryfast		Fast (default for some builds)	Decent compression
# faster			Slightly slower									Smaller files
# fast				Slower													Better compression
# medium			Balanced (default)							Good compromise
# slow				Slower 													Smaller file size
# slower			Very slow												Even smaller files
# veryslow		Extremely slow 									Best compression, smallest file size

# The range of the CRF scale is 0-51, where 0 is lossless (for 8 bit only, for 10 bit use -qp 0), 23 is the default, and 51 is worst quality possible. 
# A lower value generally leads to higher quality, and a subjectively sane range is 17-28. Consider 17 or 18 to be visually lossless or nearly so; 
# it should look the same or nearly the same as the input but it isn't technically lossless.

# using -crf
# lower crf, higher quality
#    "-vf", "scale=720:480,fps=29.97",
#cmd = [
#    "ffmpeg",
#    "-i", input_file,
#    "-vf", "scale=640:480,fps=29.97",
#    "-c:v", "libx264",
#    "-preset", "medium",
#    "-crf", "22",
#    "-c:a", "aac",
#    "-y",
#    output_file
#]

# using -b:v
#    "-vf", "scale=720:480,fps=29.97",
#cmd = [
#    "ffmpeg",
#    "-i", input_file,
#    "-vf", "scale=640:480,fps=29.97",
#    "-c:v", "libx264",
#    "-preset", "medium",
#    "-b:v", "1024k",
#    "-c:a", "aac",
#    "-y",
#    output_file
#]