[FFmpeg-user] Slight blur on converted video

[Dave]

Hi Lou,

Sorry I wasn’t trying to top post, just respond to everyone’s questions.  I thought it would be easier to read if I responded to them individually.

I realise that ffmpeg can be downloaded there.  I was referring to Erik’s post where he said that he was using "zeranoe builds” and saw on https://ffmpeg.zeranoe.com/builds/ <https://ffmpeg.zeranoe.com/builds/> there was only space for a Windows download.

Anyways I try and respond to everyone’s questions and points in the one email from now on.

The full ffmpeg output is:

$ ./ffmpeg -y -i in.mp4 -acodec pcm_s16le -vcodec prores_ks -profile:v 1 -vf scale=interl=1 -sws_flags full_chroma_inp+full_chroma_int -copytb -1 out.mov
ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
  configuration: 
  libavutil      55. 34.101 / 55. 34.101
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.101 / 57. 56.101
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp41mp42isom
    creation_time   : 2017-03-24T10:21:26.000000Z
  Duration: 00:00:20.17, start: -0.002354, bitrate: 10552 kb/s
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], 9719 kb/s, 23.97 fps, 25 tbr, 50k tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2017-03-24T10:21:26.000000Z
      handler_name    : Core Media Video
      encoder         : AVC Coding
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 253 kb/s (default)
    Metadata:
      creation_time   : 2017-03-24T10:21:26.000000Z
      handler_name    : Core Media Audio
Output #0, mov, to 'out.mov':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp41mp42isom
    encoder         : Lavf57.56.101
    Stream #0:0(eng): Video: prores (prores_ks) (apcs / 0x73637061), yuv422p10le, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2017-03-24T10:21:26.000000Z
      handler_name    : Core Media Video
      encoder         : Lavc57.64.101 prores_ks
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2017-03-24T10:21:26.000000Z
      handler_name    : Core Media Audio
      encoder         : Lavc57.64.101 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> prores (prores_ks))
  Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
frame=  504 fps=4.8 q=-0.0 Lsize=  218002kB time=00:00:20.18 bitrate=88491.5kbits/s speed=0.192x    
video:214210kB audio:3784kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.003929%

The problem occurs with both the prores and prores_ks codecs and doesn’t occur with Adobe.

In the screenshots that I took the image is blown up 300%.  In regards to monitors being used 5K iMac, MacBookPro retina, Flanders broadcast monitor and a cheap Samsung 27”.

> On 25 Mar 2017, at 11:06 am, Lou <lou at lrcd.com> wrote:
> 
> On Sat, 25 Mar 2017 10:57:19 +1100
> Dave <dave at bit.st> wrote:
> 
>> Seranoe seems to be windows only? I am testing on a Mac at the
>> moment but the final install will be on a Linux box.
> 
> See http://ffmpeg.org/download.html for links to builds for macOS and
> Linux.
> 
> Please try to avoid top-posting on this mailing list.
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