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Code Issues Wiki Activity

Export videos with audio

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Only works with mp3 for now
This commit is contained in:
Emmanouil Papadeas 2024-12-09 18:39:18 +02:00
parent 963eef4124
commit 47fb74b268
1 changed files with 50 additions and 9 deletions
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59
src/Autoload/Export.gd
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@ -427,7 +427,7 @@ func export_processed_images(
if is_single_file_format(project):
if is_using_ffmpeg(project.file_format):
var video_exported := export_video(export_paths)
var video_exported := export_video(export_paths, project)
if not video_exported:
Global.popup_error(
tr("Video failed to export. Ensure that FFMPEG is installed correctly.")
@ -505,8 +505,9 @@ func export_processed_images(
## Uses FFMPEG to export a video
func export_video(export_paths: PackedStringArray) -> bool:
func export_video(export_paths: PackedStringArray, project: Project) -> bool:
DirAccess.make_dir_absolute(TEMP_PATH)
var video_duration := 0
var temp_path_real := ProjectSettings.globalize_path(TEMP_PATH)
var input_file_path := temp_path_real.path_join("input.txt")
var input_file := FileAccess.open(input_file_path, FileAccess.WRITE)
@ -516,25 +517,65 @@ func export_video(export_paths: PackedStringArray) -> bool:
processed_images[i].image.save_png(temp_file_path)
input_file.store_line("file '" + temp_file_name + "'")
input_file.store_line("duration %s" % processed_images[i].duration)
video_duration += processed_images[i].duration
input_file.close()
# ffmpeg -y -f concat -i input.txt output_path
var ffmpeg_execute: PackedStringArray = [
"-y", "-f", "concat", "-i", input_file_path, export_paths[0]
]
var output := []
var success := OS.execute(Global.ffmpeg_path, ffmpeg_execute, output, true)
print(output)
var temp_dir := DirAccess.open(TEMP_PATH)
for file in temp_dir.get_files():
temp_dir.remove(file)
DirAccess.remove_absolute(TEMP_PATH)
var success := OS.execute(Global.ffmpeg_path, ffmpeg_execute, [], true)
if success < 0 or success > 1:
var fail_text := """Video failed to export. Make sure you have FFMPEG installed
and have set the correct path in the preferences."""
Global.popup_error(tr(fail_text))
_clear_temp_folder()
return false
# ffmpeg -i input1 -i input2 ... -i inputn -filter_complex amix=inputs=n output_path
var ffmpeg_combine_audio: PackedStringArray = ["-y"]
var audio_layer_count := 0
var max_audio_duration := 0
for layer in project.layers:
if layer is AudioLayer and layer.audio is AudioStreamMP3:
var temp_file_name := str(audio_layer_count + 1).pad_zeros(number_of_digits) + ".mp3"
var temp_file_path := temp_path_real.path_join(temp_file_name)
var temp_audio_file := FileAccess.open(temp_file_path, FileAccess.WRITE)
temp_audio_file.store_buffer(layer.audio.data)
audio_layer_count += 1
ffmpeg_combine_audio.append("-i")
ffmpeg_combine_audio.append(temp_file_path)
if layer.audio.get_length() >= max_audio_duration:
max_audio_duration = layer.audio.get_length()
if audio_layer_count > 0:
var amix_inputs_string := "amix=inputs=%s" % audio_layer_count
var audio_file_path := temp_path_real.path_join("audio.mp3")
ffmpeg_combine_audio.append_array(
PackedStringArray(["-filter_complex", amix_inputs_string, audio_file_path])
)
OS.execute(Global.ffmpeg_path, ffmpeg_combine_audio, [], true)
var copied_video := temp_path_real.path_join("video." + export_paths[0].get_extension())
DirAccess.copy_absolute(export_paths[0], copied_video)
# ffmpeg -y -i video_file -i input_audio -c:v copy -map 0:v:0 -map 1:a:0 video_file
var ffmpeg_final_video: PackedStringArray = [
"-y", "-i", copied_video, "-i", audio_file_path
]
if max_audio_duration > video_duration:
ffmpeg_final_video.append("-shortest")
ffmpeg_final_video.append_array(
["-c:v", "copy", "-map", "0:v:0", "-map", "1:a:0", export_paths[0]]
)
OS.execute(Global.ffmpeg_path, ffmpeg_final_video, [], true)
_clear_temp_folder()
return true
func _clear_temp_folder() -> void:
var temp_dir := DirAccess.open(TEMP_PATH)
for file in temp_dir.get_files():
temp_dir.remove(file)
DirAccess.remove_absolute(TEMP_PATH)
func export_animated(args: Dictionary) -> void:
var project: Project = args["project"]
var exporter: AImgIOBaseExporter = args["exporter"]