I often have problems reading AVI files with my TV's DVD player if they are not DivX or Xvid (e.g., DX50 is not readable).
I'd like to make a fast script to determine the video codec of these files before burning them to CD-ROM or DVD.
The command
ffmpeg -i file.avi
prints the "container" of the video stream (mpeg4, mpeg2, etc), not the codec.
Any hint?
Thanks
mediainfo --Inform="Video;%Codec%" video.mkv
will in my case return:
V_MPEG4/ISO/AVC
Answer made possible thanks to How to find duration of a video file using mediainfo in seconds or other formats?
Assuming your video has one video stream only:
ffprobe -v error -select_streams v:0 -show_entries stream=codec_name \
-of default=noprint_wrappers=1:nokey=1 video.mkv
Will in my case return:
h264
Answer made possible thanks to How to get video duration in seconds?
This method is easier to understand but messy.
To get the codec information without playing back the file, use ffprobe.
$ ffprobe video.mkv
[...]
Input #0, matroska,webm, from 'video.mkv':
Metadata:
ENCODER : Lavf56.25.101
Duration: 00:28:05.15, start: 0.000000, bitrate: 4353 kb/s
Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuv444p, 1280x960, SAR 1:1 DAR 4:3, 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
Metadata:
ENCODER : Lavc56.26.100 libx264
Stream #0:1: Audio: vorbis, 48000 Hz, stereo, fltp (default)
Metadata:
ENCODER : Lavc56.26.100 libvorbis
To extract the video codec information - since ffmpeg sends information to stderr - pipe and grep it:
$ ffprobe video.mkv 2>&1 >/dev/null | grep Stream.*Video
Stream #0:0: Video: h264 (High 4:4:4 Predictive), yuv444p, 1280x960, SAR 1:1 DAR 4:3, 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default)
To reduce the output even further, introduce sed:
$ ffprobe video.mkv 2>&1 >/dev/null |grep Stream.*Video | sed -e 's/.*Video: //' -e 's/[, ].*//'
h264
FFmpeg gives the codec too. Pull the Stream #0.0: Video line and you can see the codec. (Be aware that it could technically have a different stream number, like 0.1.) The below output uses the MS Video-1. This is different, like you desire, from the container which is denoted by Input #0, avi
E.g.:
FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --prefix=/opt/local --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-avfilter-lavf --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libfaac --enable-libfaad --enable-libxvid --enable-libx264 --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/gcc-4.2 --arch=x86_64
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 0 / 52.20. 0
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libavfilter 1. 4. 0 / 1. 4. 0
libswscale 1. 7. 1 / 1. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Jan 8 2010 15:34:15, gcc: 4.2.1 (Apple Inc. build 5646) (dot 1)
Input #0, avi, from 'Movies/fvss_demo.avi':
Duration: 00:02:00.30, start: 0.000000, bitrate: 719 kb/s
Stream #0.0: Video: msvideo1, rgb555, 160x120, 10 tbr, 10 tbn, 10 tbc
Stream #0.1: Audio: pcm_u8, 8000 Hz, mono, s16, 64 kb/s
At least one output file must be specified
manoa:~ stu$
Try MediaInfo instead.
It lists the codec for each stream and its output is simple enough to parse - there's also an XML output option if you prefer XPath like queries.
ffmpeg has it. On mac i did it this way :
first download ffmpeg like this:
brew install ffmpeg --with-fdk-aac --with-ffplay --with-freetype --with-frei0r --with-libass --with-libvo-aacenc --with-libvorbis --with-libvpx --with-opencore-amr --with-openjpeg --with-opus --with-rtmpdump --with-schroedinger --with-speex --with-theora --with-tools
and then run this on the command line:
ffmpeg -filter:v idet \
-frames:v 100 \
-an \
-f rawvideo -y /dev/null \
-i ~/Downloads/yourfile.mp4
then check for something like this in the output:
Duration: 00:00:05.48, start: 0.000000, bitrate: 952 kb/s Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 750x1334, 619 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
