Alexander Strasser <[email protected]> writes: > On 2020-08-15 16:25 +0200, Cecil Westerhof wrote: >> Simon Roberts <[email protected]> writes: >> >> > On Sat, Aug 15, 2020 at 5:01 AM Cecil Westerhof <[email protected]> wrote: >> > >> >> Through scripts I use ffmpeg for cutting and compressing videos and >> >> sometimes adding a watermark. Nothing fancy, but handy. >> >> >> >> In the past the original file was between 4 to 13 times bigger as the >> >> compressed file. Today I compressed a few files again. The compression >> >> was almost non existing to less as three. >> >> >> > >> > [...] >> > >> > >> >> >> > >> > What could be happening here? >> > >> > >> > The most immediate thought is that zoom improved their compression >> > algorithm and now there's not so much room left for a secondary >> > improvement. >> > >> > You might want to take a look at the original, perhaps using ffprobe, to >> > determine what codec was used, and what bitrate it started out with. >> >> No, that is not the case. These where videos I shot with my Sony >> handycam. So uncompressed files. >> But maybe I should have described it a bit clearer. > > Did I misread your logs? > > | Input #0, mpegts, from '00039.MTS': > | Duration: 00:02:49.02, start: 1.040000, bitrate: 22533 kb/s > | Program 1 > | Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), > yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], > |+25 fps, 50 tbr, 90k tbn, 50 tbc > | Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, > stereo, fltp, 256 kb/s > | Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / > 0x0090), 1920x1080 > | Stream mapping: > | Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) > > The input doesn't look uncompressed to me.
I do not have much knowledge of video formats, but this was really shot with a Sony. Maybe that the Sony compresses the video itself? It is a HDR-CX320. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
