Add logo + subtitle to multiple videos? AviDemux

I lost an hour after reading your post... but I was curious myself... so now I at least understand the basics of it.

Avidemux seems to require Sub Station Alpha subtitles. I know very little about them, so I used Subtitle Edit to create a single line SSA subtitle with a 5 hour duration. It looks like this (a text file with an ssa extension).

Code:

[Script Info]
; This is a Sub Station Alpha v4 script.
Title:
ScriptType: v4.00
Collisions: Normal
PlayDepth: 0

[V4 Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding
Style: Default,Arial,12.0,65535,65535,0,0,0,0,3,1,1,2,10,10,10,0,1

[Events]
Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: Marked=0,0:00:00.00,5:00:00.00,*Default,NTP,0000,0000,0000,,This is the subtitle

Avidemux batch encoding requires a python script and even the example on the Avidemux wiki was either outdated or wrong. I have just enough understanding of python to figure it out though.

You need to configure a single encode with your desired filtering and encoder settings etc and save it as a project (File/Project Script/Save As Project). That script will contain the configuration info you'll need to copy to the template script below, replacing the contents between the Project Start and Project End lines. I'm on Linux but you'll need to change the relevant bits according to your file paths anyway. They're highlighted. This script will convert any files with an MKV extension in the specified folder. Unfortunately python enforces an infuriating indentation in scripts, so after you've pasted the relevant parts from the script you saved, you'll have to adjust the indentation to match the script below. When you're done the script needs to be saved with a py extension, and from there you can use the "File/Project Script" menu to run it for batch encoding, assuming it works, of course.

After you've setup your project and saved it as a script there'll be a lot more individual settings for the x264 encoder, and probably other encoders too, and also settings for the audio configuration etc, but for this example I only kept the basic stuff.

Code:

#PY  <- Needed to identify #

# Convert files with an MKV extension in /media/NVME1/

gui = Gui()
adm = Avidemux()
ext = "mkv"
inputFolder = "/media/NVME1/"
outputFolder = "/media/NVME2/"
list = get_folder_content(inputFolder, ext)

if(list is None): raise gui.displayError("File error", "Cannot load file")
for i in list: convert(i)

def convert(filein):

    if not adm.loadVideo(filein):
        raise gui.displayError("File error", "Cannot load file")

    # ---------- Project Start ------------

    adm.videoCodec("x264", "useAdvancedConfiguration=False", "general.params=CRF=20", "general.preset=medium", \
      "general.tuning=film", "general.profile=high")

    adm.addVideoFilter("addLogo", "x=45", "y=45", "alpha=255", "logoImageFile=/media/NVME1/Google.png", "fade=0", \
      "scale=1.000000")

    adm.addVideoFilter("ssa", "font_scale=1.000000", "line_spacing=0.100000", \
      "subtitleFile=/media/NVME1/subtitle.ssa", "fontDirectory=/usr/share/fonts/truetype/", \
      "extractEmbeddedFonts=1", "topMargin=0", "bottomMargin=0", "displayAspectRatio=0")

    adm.setContainer("MKV", "forceAspectRatio=False", "displayWidth=1280", "displayAspectRatio=2", \
      "addColourInfo=False", "colMatrixCoeff=2", "colRange=0", "colTransfer=2", "colPrimaries=2")

    # ---------- Project End ------------

    adm.save(outputFolder + filein + ".converted.mkv")

[Attachment 79173 - Click to enlarge]