[Libav-user] Unable to find codec
francesco at bltitalia.com
francesco at bltitalia.com
Mon Jan 9 14:59:24 CET 2012
Hi to all
I compiled last release of ffmpeg with all codecs enabled. So I linked the
libraries to my project and opened a simple image composed with a single field.
The av_open_input_file, and av_find_stream_info(pFormatCtx) works correctly,
that is info contained into pFormatCtx are correct (video stream is a MPEG2
one).The problem arises when I attempt to detect codec. Here is the code:
videoStream=-1;
for(i=0; i<pFormatCtx->nb_streams; i++)
if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO) {
videoStream=i; break;
}
if(videoStream==-1) {Memo1->Lines->Add("Unable to detect stream type");
goto end_conv;}
// Get a pointer to the codec context for the video stream
pCodecCtx=pFormatCtx->streams[videoStream]->codec;
// Find the decoder for the video stream
pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
The pCodec is always null. Did anyone have an idea ? Attached you will
find the codec list included and the results of the -format option.
Best regards
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C:\Info\Mpeg\ffmpeg>ffmpeg -formats
ffmpeg version 0.8.7.git, Copyright (c) 2000-2011 the FFmpeg developers
built on Dec 22 2011 18:10:04 with gcc 4.6.1
configuration: --enable-shared --disable-yasm --prefix=/mingw
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 43. 0 / 53. 43. 0
libavformat 53. 24. 0 / 53. 24. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0
File formats:
D. = Demuxing supported
.E = Muxing supported
--
E 3g2 3GP2 format
E 3gp 3GP format
D 4xm 4X Technologies format
D IFF IFF format
D ISS Funcom ISS format
D MTV MTV format
DE RoQ raw id RoQ format
E a64 a64 - video for Commodore 64
D aac raw ADTS AAC
DE ac3 raw AC-3
D act ACT Voice file format
D adf Artworx Data Format
E adts ADTS AAC
D adx CRI ADX
D aea MD STUDIO audio
DE aiff Audio IFF
DE alaw PCM A-law format
DE amr 3GPP AMR file format
D anm Deluxe Paint Animation
D apc CRYO APC format
D ape Monkey's Audio
D applehttp Apple HTTP Live Streaming format
DE asf ASF format
E asf_stream ASF format
DE ass Advanced SubStation Alpha subtitle format
DE au SUN AU format
DE avi AVI format
E avm2 Flash 9 (AVM2) format
D avs AVS format
D bethsoftvid Bethesda Softworks VID format
D bfi Brute Force & Ignorance
D bin Binary text
D bink Bink
DE bit G.729 BIT file format
D bmv Discworld II BMV
D c93 Interplay C93
DE caf Apple Core Audio Format
DE cavsvideo raw Chinese AVS video
D cdg CD Graphics Format
E crc CRC testing format
DE daud D-Cinema audio format
D dfa Chronomaster DFA
DE dirac raw Dirac
DE dnxhd raw DNxHD (SMPTE VC-3)
D dsicin Delphine Software International CIN format
DE dts raw DTS
DE dv DV video format
E dvd MPEG-2 PS format (DVD VOB)
D dxa DXA
D ea Electronic Arts Multimedia Format
D ea_cdata Electronic Arts cdata
DE eac3 raw E-AC-3
DE f32be PCM 32 bit floating-point big-endian format
DE f32le PCM 32 bit floating-point little-endian format
DE f64be PCM 64 bit floating-point big-endian format
DE f64le PCM 64 bit floating-point little-endian format
DE ffm FFM (FFserver live feed) format
DE ffmetadata FFmpeg metadata in text format
D film_cpk Sega FILM/CPK format
DE filmstrip Adobe Filmstrip
DE flac raw FLAC
D flic FLI/FLC/FLX animation format
DE flv FLV format
E framecrc framecrc testing format
E framemd5 Per-frame MD5 testing format
DE g722 raw G.722
DE g723_1 raw G.723.1
D g729 G.729 raw format demuxer
E gif GIF Animation
D gsm raw GSM
DE gxf GXF format
DE h261 raw H.261
DE h263 raw H.263
DE h264 raw H.264 video format
D ico Microsoft Windows ICO
D idcin id Cinematic format
D idf iCE Draw File
DE image2 image2 sequence
DE image2pipe piped image2 sequence
D ingenient raw Ingenient MJPEG
D ipmovie Interplay MVE format
E ipod iPod H.264 MP4 format
D iv8 A format generated by IndigoVision 8000 video server
DE ivf On2 IVF
D jv Bitmap Brothers JV
DE latm LOAS/LATM
D lavfi Libavfilter virtual input device
D lmlm4 lmlm4 raw format
D loas LOAS AudioSyncStream
D lxf VR native stream format (LXF)
DE m4v raw MPEG-4 video format
E matroska Matroska file format
D matroska,webm Matroska/WebM file format
E md5 MD5 testing format
DE microdvd MicroDVD subtitle format
DE mjpeg raw MJPEG video
E mkvtimestamp_v2 extract pts as timecode v2 format, as defined by mkvtoolnix
DE mlp raw MLP
D mm American Laser Games MM format
DE mmf Yamaha SMAF
E mov MOV format
D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG-4/Motion JPEG 2000 format
E mp2 MPEG audio layer 2
DE mp3 MPEG audio layer 3
E mp4 MP4 format
D mpc Musepack
D mpc8 Musepack SV8
DE mpeg MPEG-1 System format
E mpeg1video raw MPEG-1 video
E mpeg2video raw MPEG-2 video
DE mpegts MPEG-2 transport stream format
D mpegtsraw MPEG-2 raw transport stream format
D mpegvideo raw MPEG video
E mpjpeg MIME multipart JPEG format
D msnwctcp MSN TCP Webcam stream
DE mulaw PCM mu-law format
D mvi Motion Pixels MVI format
DE mxf Material eXchange Format
E mxf_d10 Material eXchange Format, D-10 Mapping
D mxg MxPEG clip file format
D nc NC camera feed format
D nsv Nullsoft Streaming Video
E null raw null video format
DE nut NUT format
D nuv NuppelVideo format
DE ogg Ogg
D oma Sony OpenMG audio
D pmp Playstation Portable PMP format
E psp PSP MP4 format
D psxstr Sony Playstation STR format
D pva TechnoTrend PVA file and stream format
D qcp QCP format
D r3d REDCODE R3D format
DE rawvideo raw video format
E rcv VC-1 test bitstream
D rl2 RL2 format
DE rm RealMedia format
D rpl RPL/ARMovie format
DE rso Lego Mindstorms RSO format
DE rtp RTP output format
DE rtsp RTSP output format
DE s16be PCM signed 16 bit big-endian format
DE s16le PCM signed 16 bit little-endian format
DE s24be PCM signed 24 bit big-endian format
DE s24le PCM signed 24 bit little-endian format
DE s32be PCM signed 32 bit big-endian format
DE s32le PCM signed 32 bit little-endian format
DE s8 PCM signed 8 bit format
DE sap SAP output format
D sdp SDP
E segment segment muxer
D shn raw Shorten
D siff Beam Software SIFF
D smk Smacker video
D sol Sierra SOL format
DE sox SoX native format
DE spdif IEC 61937 (used on S/PDIF - IEC958)
DE srt SubRip subtitle format
E svcd MPEG-2 PS format (VOB)
DE swf Flash format
D thp THP
D tiertexseq Tiertex Limited SEQ format
D tmv 8088flex TMV
DE truehd raw TrueHD
D tta True Audio
D tty Tele-typewriter
D txd Renderware TeXture Dictionary
DE u16be PCM unsigned 16 bit big-endian format
DE u16le PCM unsigned 16 bit little-endian format
DE u24be PCM unsigned 24 bit big-endian format
DE u24le PCM unsigned 24 bit little-endian format
DE u32be PCM unsigned 32 bit big-endian format
DE u32le PCM unsigned 32 bit little-endian format
DE u8 PCM unsigned 8 bit format
D vc1 raw VC-1
D vc1test VC-1 test bitstream format
E vcd MPEG-1 System format (VCD)
D vfwcap VfW video capture
D vmd Sierra VMD format
E vob MPEG-2 PS format (VOB)
DE voc Creative Voice file format
D vqf Nippon Telegraph and Telephone Corporation (NTT) TwinVQ
D w64 Sony Wave64 format
DE wav WAV format
D wc3movie Wing Commander III movie format
E webm WebM file format
D wsaud Westwood Studios audio format
D wsvqa Westwood Studios VQA format
DE wtv Windows Television (WTV)
D wv WavPack
D xa Maxis XA File Format
D xbin eXtended BINary text (XBIN)
D xmv Microsoft XMV
D xwma Microsoft xWMA
D yop Psygnosis YOP Format
DE yuv4mpegpipe YUV4MPEG pipe format
-------------- next part --------------
/*******************************************************************\
* ing. Francesco Cuzzocrea
* company: BLT Italia srl web: http://www.blt.it
* address: via Rosselli, 91 city: Lido di CAMAIORE
* country: ITALY zip: 55043-i
* Tel. : +39 0584 904788 Fax: +39 0584 904789
* e-mail: francesco at bltitalia.com
\*******************************************************************/
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