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ffprobe

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Nächste Überarbeitung		Vorhergehende Überarbeitung
ffprobe [2016-03-27 15:11:50] – angelegt manfredffprobe [2024-05-12 22:14:11] (aktuell) – [ffprobe] manfred
Zeile 1: Zeile 1:
 +====== ffprobe ======
 +
 +  * [[http://www.ffmpeg.org/ffprobe.html]]
 +
 +  > ffprobe -v error -show_format -i Film.mkv
 +  > ffprobe -v error -show_packets -i Film.mkv
 +  > ffprobe -v error -show_streams -i Film.mkv
 +  
 +  > ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries stream=codec_type -of default=noprint_wrappers=1 -i Film.mkv
 +
 +**Zum auslesen der Video-Eigenschaften ist [[mediainfo]] deutlich besser geeignet! Es kann auch den Scan-Type (//Progressive// oder //Interlaced//) mit einer Ausnahme (manchmal gibt es anstelle von 50p, 50i aus) recht gut erkennen.**\\
 +
 +
 +===== Video-Eigenschaften auslesen =====
 +
 +Die wichtigsten Infos kann man mit diesem Kommando auslesen:
 +  ffprobe Film.wmv
 +  ...
 +    Duration: 00:02:10.00, start: 0.000000, bitrate: 442 kb/s
 +    Stream #0.0(heb): Audio: wmav2, 22050 Hz, 1 channels, s16, 16 kb/s
 +    Stream #0.1(heb): Video: wmv3 (Main), yuv420p, 640x480, 413 kb/s, 20 tbr, 1k tbn, 1k tbc
 +
 +Manchmal wird direkt vor "tbr" auch noch extra "fps" aufgeführt.
 +
 +FFmpeg verwendet drei verschiedene Zeitangaben:
 +  * http://ffmpeg-users.933282.n4.nabble.com/What-does-the-output-of-ffmpeg-mean-tbr-tbn-tbc-etc-td941538.html
 +  * http://stackoverflow.com/questions/3199489/meaning-of-ffmpeg-output-tbc-tbn-tbr
 +
 +  tbn = the time base in AVStream that has come from the container
 +  tbc = the time base in AVCodecContext for the codec used for a particular stream
 +  tbr = tbr is guessed from the video stream and is the value users want to see when they look for the video frame rate
 +
 +  25 fps  - Bilder/Sekunde
 +  25 tbr  - geratene Bildwiederholrate des Datenstromes
 +  90k tbn - Zeitbasis des AV-Kontainers
 +  50 tbc  - Zeitbasis im AV-Kodec-Kontext
 +
 +**Also ist die Angabe "tbr" im allgemeinen mit "fps" gleichzusetzen.**
 +
 +Man kann sich die Infos auch in einem anderen Format ausgeben lassen.
 +Eines, welches besser maschinenlesbar ist:
 +  > ffprobe -i Film.wmv -show_streams 2>/dev/null
 +  [STREAM]
 +  index=0
 +  codec_name=wmav2
 +  codec_long_name=Windows Media Audio 2
 +  codec_type=audio
 +  codec_time_base=0/1
 +  codec_tag_string=a[1][0][0]
 +  codec_tag=0x0161
 +  sample_rate=22050.000000 
 +  channels=1
 +  bits_per_sample=0
 +  r_frame_rate=0/0
 +  avg_frame_rate=250/81
 +  time_base=1/1000
 +  start_time=0.000000 
 +  duration=130.000000 
 +  TAG:language=heb
 +  [/STREAM]
 +  [STREAM]
 +  index=1
 +  codec_name=wmv3
 +  codec_long_name=Windows Media Video 9
 +  codec_type=video
 +  codec_time_base=1/1000
 +  codec_tag_string=WMV3
 +  codec_tag=0x33564d57
 +  width=640
 +  height=480
 +  has_b_frames=0
 +  pix_fmt=yuv420p
 +  r_frame_rate=20/1
 +  avg_frame_rate=0/0
 +  time_base=1/1000
 +  start_time=0.000000 
 +  duration=130.000000 
 +  TAG:language=heb
 +  [/STREAM]
 +
 +  > ffprobe -show_streams Film.mpg 2>/dev/null | sed 's/ /$/g' | tr -s '\n' ' ' | sed 's# \[/STREAM\]# [/STREAM]|#g' | tr -s '|' '\n' | fgrep codec_type=video | tr -s ' ' '\n' | sed 's/[$]/ /g' | egrep 'codec_time_base=|_frame_rate=|time_base='
 +  codec_time_base=1/50
 +  r_frame_rate=25/1
 +  avg_frame_rate=25/1
 +  time_base=1/90000
 +
 +weitere Infos kann man sich mit diesem Kommando anzeigen lassen:
 +  > ffprobe -show_format Film.wmv 2>/dev/null
 +  [FORMAT]
 +  filename=Film.wmv
 +  nb_streams=2
 +  format_name=asf
 +  format_long_name=ASF format
 +  start_time=0.000000 
 +  duration=130.000000 
 +  size=7197119.000000 
 +  bit_rate=442899.000000 
 +  TAG:WMFSDKVersion=10.00.00.3802
 +  TAG:WMFSDKNeeded=0.0.0.0000
 +  TAG:IsVBR=0
 +  [/FORMAT]
 +
 +  > ffprobe -show_format Film.mpg 2>/dev/null
 +  [FORMAT]
 +  filename=Du_bist_was_Du_isst.mpg
 +  nb_streams=3
 +  format_name=mpeg
 +  format_long_name=MPEG-PS format
 +  start_time=0.287267
 +  duration=0.928000
 +  size=4992397312.000000
 +  bit_rate=-2147483648.000000
 +  [/FORMAT]
 +
 +  > ffprobe -show_packets Film.mpg 2>/dev/null | fgrep stream_index= | head -n1000 | sort | uniq
 +  stream_index=0
 +  stream_index=1
 +  stream_index=2
 +
 +  $ du -k Avengers_4_-_Endgame.mpg
 +  7448081 Avengers_4_-_Endgame.mpg
 +  
 +  $ ffprobe -probesize 9223372036G -analyzeduration 9223372036G Avengers_4_-_Endgame.mpg
 +
 +Die Option ''-probesize'' funktioniert nicht alleine, es muss zusammen mit einem weiteren (''-analyzeduration'', ''-fpsprobesize'') verwendet werden.
 +  $ ffprobe -probesize 9223372036G -analyzeduration 9223372036G -i Avengers_4_-_Endgame.mpg
 +
 +__Die besten Ergebnisse erhält man, wenn die beiden Optionen ''-probesize'' und ''-analyzeduration'' zusammen verwendet werden (man kann hier ganz einfach immer den Maximalwert angeben):__
 +  $ ffprobe -probesize 9223372036G -analyzeduration 9223372036G -i Avengers_4_-_Endgame.mpg 
 +
 +
 +===== Show Streams =====
 +
 +<code>
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_streams -i "${1}"
 +[STREAM]
 +index=0
 +codec_name=mpeg2video
 +codec_long_name=MPEG-2 video
 +profile=Main
 +codec_type=video
 +codec_tag_string=[0][0][0][0]
 +codec_tag=0x0000
 +width=720
 +height=576
 +coded_width=0
 +coded_height=0
 +closed_captions=0
 +film_grain=0
 +has_b_frames=1
 +sample_aspect_ratio=16:15
 +display_aspect_ratio=4:3
 +pix_fmt=yuv420p
 +level=8
 +color_range=tv
 +color_space=unknown
 +color_transfer=unknown
 +color_primaries=unknown
 +chroma_location=left
 +field_order=progressive
 +refs=1
 +id=0x1e0
 +r_frame_rate=25/1
 +avg_frame_rate=25/1
 +time_base=1/90000
 +start_pts=25854
 +start_time=0.287267
 +duration_ts=146073600
 +duration=1623.040000
 +...
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_streams -show_data   -i "${1}"
 +[STREAM]
 +index=0
 +codec_name=mpeg2video
 +codec_long_name=MPEG-2 video
 +profile=Main
 +codec_type=video
 +codec_tag_string=[0][0][0][0]
 +codec_tag=0x0000
 +width=720
 +height=576
 +coded_width=0
 +coded_height=0
 +closed_captions=0
 +film_grain=0
 +has_b_frames=1
 +sample_aspect_ratio=16:15
 +display_aspect_ratio=4:3
 +pix_fmt=yuv420p
 +level=8
 +color_range=tv
 +color_space=unknown
 +color_transfer=unknown
 +color_primaries=unknown
 +chroma_location=left
 +field_order=progressive
 +refs=1
 +id=0x1e0
 +r_frame_rate=25/1
 +avg_frame_rate=25/1
 +time_base=1/90000
 +start_pts=25854
 +start_time=0.287267
 +duration_ts=146073600
 +duration=1623.040000
 +...
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_streams -show_format -loglevel warning -print_format json -i "${1}"
 +{
 +    "streams": [
 +        {
 +            "index": 0,
 +            "codec_name": "mpeg2video",
 +            "codec_long_name": "MPEG-2 video",
 +            "profile": "Main",
 +            "codec_type": "video",
 +            "codec_tag_string": "[0][0][0][0]",
 +            "codec_tag": "0x0000",
 +            "width": 720,
 +            "height": 576,
 +            "coded_width": 0,
 +            "coded_height": 0,
 +            "closed_captions": 0,
 +            "film_grain": 0,
 +            "has_b_frames": 1,
 +            "sample_aspect_ratio": "16:15",
 +            "display_aspect_ratio": "4:3",
 +            "pix_fmt": "yuv420p",
 +            "level": 8,
 +            "color_range": "tv",
 +            "chroma_location": "left",
 +            "field_order": "progressive",
 +            "refs": 1,
 +            "id": "0x1e0",
 +            "r_frame_rate": "25/1",
 +            "avg_frame_rate": "25/1",
 +            "time_base": "1/90000",
 +            "start_pts": 25854,
 +            "start_time": "0.287267",
 +            "duration_ts": 146073600,
 +            "duration": "1623.040000",
 +...
 +</code>
 +
 +
 +===== Show Entries =====
 +
 +<code>
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries format_tags=title -of compact=p=0:nk=1 -i "${1}"
 +Winnetou - Eine neue Welt (Originaltitel: Winnetou & Old Shatterhand)
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries format_tags=comment -of compact=p=0:nk=1 -i "${1}"
 +FSK 12 / 2016 / 117 Min. / imdb tt4893452 / Nik Xhelilaj, Wotan Wilke Möhring, Jürgen Vogel
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries format_tags=description -of compact=p=0:nk=1 -i "${1}"
 +Apachenhäuptling Winnetou schließt Freundschaft mit dem deutschen Eisenbahningenieur Karl May, der später Old Shatterhand genannt wird.
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries stream=codec_type -of default=noprint_wrappers=1 -i "${1}"
 +codec_type=video
 +codec_type=audio
 +codec_type=subtitle
 +
 +> ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -select_streams v:0 -show_entries stream=width,height,duration,bit_rate -of default=noprint_wrappers=1 -i "${1}"
 +width=720
 +height=576
 +duration=1623.040000
 +bit_rate=N/A
 +</code>
 +
 +Spuren zählen:
 +  > CODEC_TYPE="$(ffprobe -v error -probesize 9223372036G -analyzeduration 9223372036G -show_entries stream=codec_type -of default=noprint_wrappers=1 -i Film.mkv)"
 +  
 +  > echo "${CODEC_TYPE}" | grep -F 'codec_type=video'    | nl | awk '{sub("="," ");print $1,$3}' | tail -n1
 +  1 video
 +  
 +  > echo "${CODEC_TYPE}" | grep -F 'codec_type=audio'    | nl | awk '{sub("="," ");print $1,$3}' | tail -n1
 +  4 audio
 +  
 +  > echo "${CODEC_TYPE}" | grep -F 'codec_type=subtitle' | nl | awk '{sub("="," ");print $1,$3}' | tail -n1
 +  3 subtitle
 +
 +