1
I have couple of (over 100) mp4 video files, which are approximately 15 MB each. I think they are unnecessarily high quality videos, I want to lower the sizes of each, by reducing the quality. I know I can do this with ffmpeg, but I am not familiar with concepts like bitrates, codes etc, so can anyone help with that? This is metadata of one of them:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '16.8-AnomalyDetection-AnomalyDetectionUsingTheMultivariateGaussianDistribution-OPTIONAL.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isom
creation_time : 2011-12-06 18:56:20
Duration: 00:14:03.40, start: 0.000000, bitrate: 176 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1000x562 [SAR 1:1 DAR 500:281], 45 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 127 kb/s
Metadata:
creation_time : 2011-12-06 18:56:20
handler_name : GPAC ISO Audio Handler
1You do realize that the audio is responsible for over 70% of your file size? – Daniel Beck – 2012-01-08T22:24:28.347
No I do not :) As I say, I am not particularly good with audio and video encodings. – yasar – 2012-01-08T22:26:03.197
You can see the lines that contain
Audio
andVideo
, with the former having127 kb/s
and the latter45 kb/s
, making up almost all of the total176 kb/s
. – Daniel Beck – 2012-01-08T22:31:26.480