7ff1031627
commit 4fe0af4e6a4a15ee4796a857e79ad0fe9b72c0f1
Author: Dylan <dylanpdx@gmail.com>
Date: Wed Dec 28 18:09:25 2022 +0000
Misc. changes to MP4 Looping function
commit 42ef8845c38c5a74e56da3c5f035d5a6c091c86a
Author: Dylan <dylanpdx@gmail.com>
Date: Tue Dec 27 20:00:22 2022 +0000
Abandoning raw gif conversion for now; looping vid instead
commit b61938b340a02ac8cfab02048b7e9deaf87edbf5
Author: Dylan <dylanpdx@gmail.com>
Date: Tue Dec 27 19:38:58 2022 +0000
More work on WIP gif generation
commit 3bc6e7e0da1ce6ae905c80bbbaaa55a68050de52
Author: Dylan <dylanpdx@gmail.com>
Date: Mon Dec 26 14:46:46 2022 +0000
Experimental gif conversion
92 lines
2.6 KiB
Python
92 lines
2.6 KiB
Python
import base64
|
|
import os
|
|
import subprocess
|
|
import json
|
|
import sys
|
|
import tempfile
|
|
|
|
def extractStatus(url):
|
|
return ""
|
|
|
|
def get_video_frame_rate(filename):
|
|
result = subprocess.run(
|
|
[
|
|
"./ffprobe",
|
|
"-v",
|
|
"error",
|
|
"-select_streams",
|
|
"v",
|
|
"-of",
|
|
"default=noprint_wrappers=1:nokey=1",
|
|
"-show_entries",
|
|
"stream=r_frame_rate",
|
|
filename,
|
|
],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT,
|
|
)
|
|
result_string = result.stdout.decode('utf-8').split()[0].split('/')
|
|
fps = float(result_string[0])/float(result_string[1])
|
|
return fps
|
|
|
|
def get_video_length_seconds(filename):
|
|
result = subprocess.run(
|
|
[
|
|
"./ffprobe",
|
|
"-v",
|
|
"error",
|
|
"-show_entries",
|
|
"format=duration",
|
|
"-of",
|
|
"default=noprint_wrappers=1:nokey=1",
|
|
filename,
|
|
],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT,
|
|
)
|
|
result_string = result.stdout.decode('utf-8').split()[0]
|
|
return float(result_string)
|
|
|
|
def loop_video_until_length(filename, length):
|
|
# use stream_loop to loop video until it's at least length seconds long
|
|
video_length = get_video_length_seconds(filename)
|
|
if video_length < length:
|
|
loops = int(length/video_length)
|
|
new_filename = tempfile.mkstemp(suffix=".mp4")[1]
|
|
out = subprocess.call(["./ffmpeg","-stream_loop",str(loops),"-i",filename,"-c","copy","-y",new_filename],stdout=subprocess.DEVNULL,stderr=subprocess.STDOUT)
|
|
return new_filename
|
|
else:
|
|
return filename
|
|
|
|
|
|
|
|
def lambda_handler(event, context):
|
|
if ("queryStringParameters" not in event):
|
|
return {
|
|
"statusCode": 400,
|
|
"body": "Invalid request."
|
|
}
|
|
|
|
url = event["queryStringParameters"].get("url","")
|
|
|
|
# download video
|
|
videoLocation = tempfile.mkstemp(suffix=".mp4")[1]
|
|
subprocess.call(["wget","-O",videoLocation,url],stdout=subprocess.DEVNULL,stderr=subprocess.STDOUT)
|
|
|
|
videoLocationLooped = loop_video_until_length(videoLocation, 30)
|
|
if videoLocationLooped != videoLocation:
|
|
os.remove(videoLocation)
|
|
videoLocation = videoLocationLooped
|
|
|
|
with open(videoLocation, "rb") as image_file:
|
|
encoded_string = base64.b64encode(image_file.read()).decode('ascii')
|
|
os.remove(videoLocation)
|
|
return {
|
|
'statusCode': 200,
|
|
"headers":
|
|
{
|
|
"Content-Type": "video/mp4"
|
|
},
|
|
'body': encoded_string,
|
|
'isBase64Encoded': True
|
|
} |