[FFmpeg-user] Slight blur on converted video

[Dave]

To answer your suggestions Chronek:

I tried encoding with your suggested command line it was still pretty much the same.

1) I downloaded a fresh copy of ffmpeg and compiled it and still had the same results
2) I am not really in a position to comment on
3) I assure you AME is using the same settings
4) Might be a possibility, I am a bit of a newbie when it comes to this. Below is the metadata for the original clip in case anything is lost in the cut down version.

The cut down version of the clip was created with QuickTime and you can download it here:

http://www.bit.st/screenshots/in.mp4


$ ./ffprobe -v error -show_format -show_streams in.mp4 
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=Main
codec_type=video
codec_time_base=1/50
codec_tag_string=avc1
codec_tag=0x31637661
width=1920
height=1080
coded_width=1920
coded_height=1080
has_b_frames=1
sample_aspect_ratio=1:1
display_aspect_ratio=16:9
pix_fmt=yuv420p
level=41
color_range=tv
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
is_avc=true
nal_length_size=4
id=N/A
r_frame_rate=25/1
avg_frame_rate=25/1
time_base=1/50000
start_pts=0
start_time=0.000000
duration_ts=13934000
duration=278.680000
bit_rate=9798319
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=6967
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2017-03-01T22:53:40.000000Z
TAG:language=eng
TAG:handler_name=Alias Data Handler
TAG:encoder=AVC Coding
[/STREAM]
[STREAM]
index=1
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
codec_type=audio
codec_time_base=1/48000
codec_tag_string=mp4a
codec_tag=0x6134706d
sample_fmt=fltp
sample_rate=48000
channels=2
channel_layout=stereo
bits_per_sample=0
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/48000
start_pts=0
start_time=0.000000
duration_ts=13376640
duration=278.680000
bit_rate=253386
max_bit_rate=319125
bits_per_raw_sample=N/A
nb_frames=13065
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2017-03-01T22:53:41.000000Z
TAG:language=eng
TAG:handler_name=Alias Data Handler
[/STREAM]
[FORMAT]
filename=/Users/dave/in.mp4
nb_streams=2
nb_programs=0
format_name=mov,mp4,m4a,3gp,3g2,mj2
format_long_name=QuickTime / MOV
start_time=0.000000
duration=278.719589
size=350280600
bit_rate=10053993
probe_score=100
TAG:major_brand=mp42
TAG:minor_version=0
TAG:compatible_brands=mp42mp41
TAG:creation_time=2017-03-01T22:53:40.000000Z
[/FORMAT]

/dave.


> On 24 Mar 2017, at 11:35 am, chronek <chronek at interia.eu> wrote:
> 
> If  "ffmpeg -i in.mp4 -acodec pcm_s16le -sws_flags full_chroma_inp+full_chroma_int+accurate_rnd+bitexact -sws_dither none -vcodec prores_ks -profile:v 1 -copytb -1 out.mov" not work as should then there are posibilities (1) you are using old ffmpeg (2) there is bug in ffmpeg decoder what deblock h264 when it shoud not (3) AME is encoding to different settings than prores_ks profile:v 1 (4) theres problem with timestamps and ffmpeg trying sanitize it by blending frames to keep framerate
> 
> 
> please provide a small part of your source video for testing
> 
> 
> W dniu 2017-03-23 o 19:59, Dave pisze:
>> ProRes is required because it is going into Final Cut Pro 7.
>> 
>> 
>>> On 24 Mar 2017, at 2:20 am, chronek <chronek at interia.eu> wrote:
>>> 
>>> Are you really need prores codec? If you concern quality then use some loseless codec like utvideo...
>>> 
>>> W dniu 2017-03-23 o 12:43, Dave pisze:
>>> 
> 
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