Remember that B and P frames offer us the most efficient compression, so in a lower bitrate movie, a short GOP length will result in poorer video quality. This can of course be converted to some other format if needed. The shorter the GOP length, the fewer B and P frames exist between I frames. The technical metadata is then stored in DynamoDB in XML format. Using MediaInfo, the Lambda function then extracts the technical metadata from the multimedia file. MediaInfo downloads the minimum bytes necessary of the multimedia file stored on S3. Resulting in the total duration of all the files, in seconds. The Lambda function generates a S3 signed URL, which is passed as an input to MediaInfo. Nice, it is same as ffprobe which I found, supports lesser formats than mediainfo. We can then split this output up, selecting just the duration time. How can I find length (duration) of MP4 videos and m4a audio files on cygwin I heard about mediainfo, ffmpeg, avconv utilities on Linux platform but not sure if they work (or available) on cygwin. ts extension, but assuming they're some type of video file you can use ffmpeg to identify the duration of a file like so: $ ffmpeg -i some.mp4 2>
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |