[Libav-user] decoding h264 RTP stream question

Assaf kave asafk at robo-team.com
Wed May 7 09:29:29 CEST 2014

Avformat_network_init() of course

From: libav-user-bounces at ffmpeg.org [mailto:libav-user-bounces at ffmpeg.org] On Behalf Of Assaf kave
Sent: Wednesday, May 07, 2014 10:24 AM
To: libav-user at ffmpeg.org
Subject: Re: [Libav-user] decoding h264 RTP stream question

I also try av_codec_network_init() , but without success.

From: libav-user-bounces at ffmpeg.org<mailto:libav-user-bounces at ffmpeg.org> [mailto:libav-user-bounces at ffmpeg.org] On Behalf Of pawelrutka
Sent: Tuesday, April 29, 2014 15:37 PM
To: libav-user at ffmpeg.org<mailto:libav-user at ffmpeg.org>
Subject: Re: [Libav-user] decoding h264 RTP stream question

You should register network at the beginning after av_register_all() I think.

Dnia 28 kwietnia 2014 17:51 Assaf kave napisał(a):

Hi there,

I am developing video player based on your FFmpeg libraries, I am trying to decode NAL units streamed from IP camera, but I get "Invalid data found when processing input" on the first SPS and the return code from "avcodec_decode_video2" is -1094995529.
Only if I concatante SPS,PPS IDR or SPS,PPS IDR I get decoded frame.
My first SPS looks like this:
00 00 00 01 67 64 00 28 ad 00 ce 50 28 0b fe 5c 04 40 00 03 84 00 00 af c8 38 00 00 03 01 7d 78 40 00 03 b9 ac a8 bd f8 c0 00 00 0b eb c2 00 00 1d cd 65 45 ef c1 b4 11 08 94 b0 00

The avcodec initlization :


video_dec_codec_ = avcodec_find_decoder(AV_CODEC_ID_H264);

video_dec_ctx_ = avcodec_alloc_context3(video_dec_codec_);

avcodec_open2(video_dec_ctx_, video_dec_codec_, NULL) ;

frame_ = av_frame_alloc();


can you help please?

Best Regards,

Asaf Kave
R&D, Software engineer.
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