The parameters I used as following:
oVcc = video_st->codec;
oVcc->codec_id = CODEC_ID_H264;
oVcc->codec_type = AVMEDIA_TYPE_VIDEO;
oVcc->bit_rate = 1000000;
oVcc->rc_min_rate = 1000000;
oVcc->rc_max_rate = 1000000;
oVcc->rc_buffer_size = 1000000;
oVcc->rc_initial_cplx = 0.5;
oVcc->rc_initial_buffer_occupancy = 0.9;
oVcc->width = 1280;
oVcc->height = 720;
oVcc->gop_size = 250;
oVcc->pix_fmt = vCodecCtx->pix_fmt;
oVcc->max_b_frames = 3;
oVcc->me_cmp = 2;
oVcc->me_sub_cmp = 2;
oVcc->mb_decision = 2;
oVcc->me_range = 16;
oVcc->me_method = 8;
oVcc->time_base.num = 1;
oVcc->time_base.den = 25;
oVcc->thread_count = 7;
oVcc->trellis = 2;
oVcc->me_subpel_quality = 7;
oVcc->qmin = 2;
oVcc->qmax = 31;
oVcc->i_quant_factor = 1.0 / 1.40f;
oVcc->b_quant_factor = 1.30f;
oVcc->chromaoffset = 0;
oVcc->max_qdiff = 4;
oVcc->qcompress = 0.6f;
oVcc->qblur = 0.5f;
oVcc->noise_reduction = 0;
oVcc->scenechange_threshold = 40;
oVcc->me_cmp = FF_CMP_CHROMA;
oVcc->keyint_min = 25;
//oVcc->level = 32;
oVcc->b_frame_strategy = 2;
oVcc->flags |= CODEC_FLAG_GLOBAL_HEADER;
Best regards,
Li
________________________________________
From: [email protected] [[email protected]] On Behalf
Of Alex Cohn [[email protected]]
Sent: Tuesday, March 20, 2012 11:26 AM
To: This list is about using libavcodec, libavformat, libavutil,
libavdevice and libavfilter.
Subject: Re: [Libav-user] What is the meaning of return value -1 for
av_interleaved_write_frame()
On Tue, Mar 20, 2012 at 12:21, Li Zhang <[email protected]> wrote:
>
> Hi ,
>
> I used av_interleaved_write_frame() to write frames into output. At first, it
> works well. After a while, it will fail and return value is -1.
> Actually, it only failed for video frame, and ffmpeg did not give out any
> message, i. e. it still gave out this information for the 701st frame:
> frame= 701 QP=24.73 NAL=2 Slice:P Poc:108 I:14 P:1310 SKIP:2276 size=5413
> bytes. In fact, this frame was not been written.
> Does there anyone know what is the meaning?
>
>
> Best regards,
>
> Li
What kind of output are you using? Is it a file or a stream? What
container format?
BR,
Alex
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