blogng/2011-10-11-ffmepg-nokia-7210-video-clips.markdown at trunk

Dhananjay Balan 58b20109cf Convert from old categories to tags

import sys
import yaml

with open(sys.argv[1]) as fp:
    data = fp.read()

if not data.find("---") == 0:
    # no head
    print("NO YAML HEAD FOUND")
    sys.exit(-1)

data = data[3:]
head_end = data.find("---")

head = data[0:head_end]
data = data[head_end+3:]

metadata = yaml.safe_load(head)

cats = metadata.pop('categories', None)
if cats != None:
    if type(cats) == list:
        tags = cats
    elif type(cats) == str:
        tags = cats.split()

    tags = list(map(lambda t: t.lower(), tags))

    metadata["tags"] = ", ".join(tags)
    new_data = f"---\n{yaml.dump(metadata, default_flow_style=False)}---{data}"
    # write it
    print(f"coverted: categories to tags: {tags} - {sys.argv[1]}")
    with open(sys.argv[1], "w") as fp:
        fp.write(new_data)
    sys.exit(0)

if not metadata.get("tags", None):
    metadata["tags"] = "untagged"
    new_data = f"---\n{yaml.dump(metadata, default_flow_style=False)}---{data}"
    print(f"untagged: {sys.argv[1]}")
    # write it
    with open(sys.argv[1], "w") as fp:
        fp.write(new_data)
    sys.exit(0)

print("No changes needed")

2019-01-28 17:16:27 -05:00

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Raw Permalink Blame History

author	comments	date	layout	slug	tags	title	wordpress_id
dhananjayishere	true	2011-10-11 03:33:00	post	ffmepg-nokia-7210-video-clips	gnu/linux, multimedia, tips	FFmpeg + Nokia 7210 Video Clips.	74980538

Nokia 7210 supports video clips of container mp4 with following specifications.

Video Codec: mpeg4 Video Size: 320x240 Bit Rate: 500 Frame Rate: Auto Aspect: Auto Same Quality: False

Audio: Audio Codec: mpeg4aac Bit Rate: 96 Sample Rate: 44100 Channels: 1 (Mono) Disable Audio: False

So to make a clip playable in phone,

Use

** ffmpeg -i -b 500 -s 320x240 -f mp4 -acodec libfaac -vcodec mpeg4 **

644 B Raw Permalink Blame History

644 B

Raw Permalink Blame History