ffprobe for text files?

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ffprobe for text files?

Chad Davis
Hello-

Here's a newbie ffprobe question:

I noticed that ffprobe supports txt files.  For kicks, I created a sample text file titled "test.txt" that contained "Test."  I ran ffprobe (ffprobe -v error -show_format -show_streams test.txt) and got this:

[STREAM]
index=0
codec_name=ansi
codec_long_name=ASCII/ANSI art
profile=unknown
codec_type=video
codec_time_base=1/25
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
width=640
height=400
coded_width=640
coded_height=400
has_b_frames=0
sample_aspect_ratio=0:1
display_aspect_ratio=0:1
pix_fmt=pal8
level=-99
color_range=N/A
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=unspecified
field_order=unknown
timecode=N/A
refs=1
id=N/A
r_frame_rate=25/1
avg_frame_rate=25/1
time_base=1/25
start_pts=N/A
start_time=N/A
duration_ts=1
duration=0.040000
bit_rate=N/A
max_bit_rate=N/A
bits_per_raw_sample=N/A
nb_frames=N/A
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
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
[/STREAM]
[FORMAT]
filename=test.txt
nb_streams=1
nb_programs=0
format_name=tty
format_long_name=Tele-typewriter
start_time=N/A
duration=0.040000
size=5
bit_rate=1000
probe_score=50
[/FORMAT]

I guess I don't understand why ffprobe would support text files.  I also don't understand why a text file could have a width, height or duration.  Am I missing something?

Thanks!


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Re: ffprobe for text files?

Paul B Mahol
On 11/20/18, Chad Davis <[hidden email]> wrote:

> Hello-
>
> Here's a newbie ffprobe question:
>
> I noticed that ffprobe supports txt files.  For kicks, I created a sample
> text file titled "test.txt" that contained "Test."  I ran ffprobe (ffprobe
> -v error -show_format -show_streams test.txt) and got this:
>
> [STREAM]
> index=0
> codec_name=ansi
> codec_long_name=ASCII/ANSI art
> profile=unknown
> codec_type=video
> codec_time_base=1/25
> codec_tag_string=[0][0][0][0]
> codec_tag=0x0000
> width=640
> height=400
> coded_width=640
> coded_height=400
> has_b_frames=0
> sample_aspect_ratio=0:1
> display_aspect_ratio=0:1
> pix_fmt=pal8
> level=-99
> color_range=N/A
> color_space=unknown
> color_transfer=unknown
> color_primaries=unknown
> chroma_location=unspecified
> field_order=unknown
> timecode=N/A
> refs=1
> id=N/A
> r_frame_rate=25/1
> avg_frame_rate=25/1
> time_base=1/25
> start_pts=N/A
> start_time=N/A
> duration_ts=1
> duration=0.040000
> bit_rate=N/A
> max_bit_rate=N/A
> bits_per_raw_sample=N/A
> nb_frames=N/A
> nb_read_frames=N/A
> nb_read_packets=N/A
> DISPOSITION:default=0
> 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
> [/STREAM]
> [FORMAT]
> filename=test.txt
> nb_streams=1
> nb_programs=0
> format_name=tty
> format_long_name=Tele-typewriter
> start_time=N/A
> duration=0.040000
> size=5
> bit_rate=1000
> probe_score=50
> [/FORMAT]
>
> I guess I don't understand why ffprobe would support text files.  I also
> don't understand why a text file could have a width, height or duration.  Am
> I missing something?

You are missing big picture.
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