[Libav-user] RTSP relay using not working
Andy Shaules
bowljoman at gmail.com
Sun Nov 22 01:58:37 CET 2015
On 11/21/2015 2:51 AM, Kiran wrote:
> Hi,
> I am implementing an RTSP relay using libavcodec (ffmpeg). Basically,
> it connects to an IP camera, which is an RTSP server, PULLs the stream
> and then PUSHes it to wowza. I am finding it very difficult to get any
> sample implementation for this in the internet. So I started
> implementing this using bits and pieces from here and there. I took
> code for code samples to a) read RTSP stream and write to file b)read
> from file and serve it over RTSP.
>
> This is the current state of the code:
> /
> /*
> * Copyright (c) 2010 Nicolas George
> * Copyright (c) 2011 Stefano Sabatini
> * Copyright (c) 2014 Andrey Utkin
> *
> * Permission is hereby granted, free of charge, to any person
> obtaining a copy
> * of this software and associated documentation files (the
> "Software"), to deal
> * in the Software without restriction, including without
> limitation the rights
> * to use, copy, modify, merge, publish, distribute, sublicense,
> and/or sell
> * copies of the Software, and to permit persons to whom the
> Software is
> * furnished to do so, subject to the following conditions:
> *
> * The above copyright notice and this permission notice shall be
> included in
> * all copies or substantial portions of the Software.
> *
> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
> EVENT SHALL
> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
> DAMAGES OR OTHER
> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> ARISING FROM,
> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> DEALINGS IN
> * THE SOFTWARE.
> */
>
> /**
> * @file
> * API example for demuxing, decoding, filtering, encoding and muxing
> * @example transcoding.c
> */
>
> #include <libavcodec/avcodec.h>
> #include <libavformat/avformat.h>
> #include <libavfilter/avfiltergraph.h>
> #include <libavfilter/buffersink.h>
> #include <libavfilter/buffersrc.h>
> #include <libavutil/opt.h>
> #include <libavutil/pixdesc.h>
>
> static AVFormatContext *ifmt_ctx,*temp;
> static AVFormatContext *ofmt_ctx;
> typedef struct FilteringContext {
> AVFilterContext *buffersink_ctx;
> AVFilterContext *buffersrc_ctx;
> AVFilterGraph *filter_graph;
> } FilteringContext;
> static FilteringContext *filter_ctx;
>
> static int open_input_file(const char *filename)
> {
> int ret;
> unsigned int i;
>
> ifmt_ctx = NULL;
> if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL,
> NULL)) < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n");
> return ret;
> }
>
> if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot find stream
> information\n");
> return ret;
> }
>
> for (i = 0; i < ifmt_ctx->nb_streams; i++) {
> AVStream *stream;
> AVCodecContext *codec_ctx;
> stream = ifmt_ctx->streams[i];
> codec_ctx = stream->codec;
> /* Reencode video & audio and remux subtitles etc. */
> if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
> || codec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
> /* Open decoder */
> ret = avcodec_open2(codec_ctx,
> avcodec_find_decoder(codec_ctx->codec_id), NULL);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Failed to open decoder
> for stream #%u\n", i);
> return ret;
> }
> }
> }
>
> av_dump_format(ifmt_ctx, 0, filename, 0);
> return 0;
> }
>
> static int open_output_file(const char *filename)
> {
> AVStream *out_stream;
> AVStream *in_stream;
> AVCodecContext *dec_ctx, *enc_ctx;
> AVCodec *encoder,*codec;
> int ret;
> unsigned int i;
>
> ofmt_ctx = NULL;
> avformat_open_input(&temp, "rtsp://localhost:8554/live", NULL,
> NULL);
> avformat_alloc_output_context2(&ofmt_ctx,
> temp->oformat,"rtsp", filename);
> if (!ofmt_ctx) {
> av_log(NULL, AV_LOG_ERROR, "Could not create output
> context\n");
> return AVERROR_UNKNOWN;
> }
>
>
> for (i = 0; i < ifmt_ctx->nb_streams; i++) {
> out_stream = avformat_new_stream(ofmt_ctx, NULL);
> if (!out_stream) {
> av_log(NULL, AV_LOG_ERROR, "Failed allocating output
> stream\n");
> return AVERROR_UNKNOWN;
> }
>
> in_stream = ifmt_ctx->streams[i];
> dec_ctx = in_stream->codec;
> enc_ctx = out_stream->codec;
>
> if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO
> || dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
> /* in this example, we choose transcoding to same codec */
> encoder = avcodec_find_encoder(dec_ctx->codec_id);
> printf("codec : %d",dec_ctx->codec_id);
> if (!encoder) {
> av_log(NULL, AV_LOG_FATAL, "Necessary encoder not
> found\n");
> return AVERROR_INVALIDDATA;
> }
>
> /* In this example, we transcode to same properties
> (picture size,
> * sample rate etc.). These properties can be changed
> for output
> * streams easily using filters */
> if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
> enc_ctx->height = dec_ctx->height;
> enc_ctx->width = dec_ctx->width;
> enc_ctx->sample_aspect_ratio =
> dec_ctx->sample_aspect_ratio;
> /* take first format from list of supported formats */
> enc_ctx->pix_fmt = encoder->pix_fmts[0];
> //enc_ctx->codec_id = AV_CODEC_ID_H264;
> /* video time_base can be set to whatever is handy
> and supported by encoder */
> enc_ctx->time_base = dec_ctx->time_base;
> } else {
> enc_ctx->sample_rate = dec_ctx->sample_rate;
> enc_ctx->channel_layout = dec_ctx->channel_layout;
> enc_ctx->channels =
> av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
> /* take first format from list of supported formats */
> enc_ctx->sample_fmt = encoder->sample_fmts[0];
> enc_ctx->pix_fmt =AV_PIX_FMT_RGB24 ;
> enc_ctx->time_base = (AVRational){1,
> enc_ctx->sample_rate};
> }
>
> /* Third parameter can be used to pass settings to
> encoder */
> //codec = avcodec_find_encoder(AV_CODEC_ID_H264);
> ret = avcodec_open2(enc_ctx, encoder, NULL);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot open video
> encoder for stream #%u\n", i);
> return ret;
> }
> } else if (dec_ctx->codec_type == AVMEDIA_TYPE_UNKNOWN) {
> av_log(NULL, AV_LOG_FATAL, "Elementary stream #%d is
> of unknown type, cannot proceed\n", i);
> return AVERROR_INVALIDDATA;
> } else {
> /* if this stream must be remuxed */
> ret = avcodec_copy_context(ofmt_ctx->streams[i]->codec,
> ifmt_ctx->streams[i]->codec);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Copying stream context
> failed\n");
> return ret;
> }
> }
>
> if (ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
> enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
>
> }
> av_dump_format(ofmt_ctx, 0, filename, 1);
>
> if (!(ofmt_ctx->oformat->flags & AVFMT_NOFILE)) {
> ret = avio_open(&ofmt_ctx->pb, filename, AVIO_FLAG_WRITE);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Could not open output file
> '%s'", filename);
> return ret;
> }
> }
>
> /* init muxer, write output file header */
> ret = avformat_write_header(ofmt_ctx, NULL);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Error occurred when opening
> output file\n");
> return ret;
> }
>
> return 0;
> }
>
> static int init_filter(FilteringContext* fctx, AVCodecContext
> *dec_ctx,
> AVCodecContext *enc_ctx, const char *filter_spec)
> {
> char args[512];
> int ret = 0;
> AVFilter *buffersrc = NULL;
> AVFilter *buffersink = NULL;
> AVFilterContext *buffersrc_ctx = NULL;
> AVFilterContext *buffersink_ctx = NULL;
> AVFilterInOut *outputs = avfilter_inout_alloc();
> AVFilterInOut *inputs = avfilter_inout_alloc();
> AVFilterGraph *filter_graph = avfilter_graph_alloc();
>
> if (!outputs || !inputs || !filter_graph) {
> ret = AVERROR(ENOMEM);
> goto end;
> }
>
> if (dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
> buffersrc = avfilter_get_by_name("buffer");
> buffersink = avfilter_get_by_name("buffersink");
> if (!buffersrc || !buffersink) {
> av_log(NULL, AV_LOG_ERROR, "filtering source or sink
> element not found\n");
> ret = AVERROR_UNKNOWN;
> goto end;
> }
>
> snprintf(args, sizeof(args),
> "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
> dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
> dec_ctx->time_base.num, dec_ctx->time_base.den,
> dec_ctx->sample_aspect_ratio.num,
> dec_ctx->sample_aspect_ratio.den);
>
> ret = avfilter_graph_create_filter(&buffersrc_ctx,
> buffersrc, "in",
> args, NULL, filter_graph);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot create buffer
> source\n");
> goto end;
> }
>
> ret = avfilter_graph_create_filter(&buffersink_ctx,
> buffersink, "out",
> NULL, NULL, filter_graph);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink\n");
> goto end;
> }
>
> ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
> (uint8_t*)&enc_ctx->pix_fmt, sizeof(enc_ctx->pix_fmt),
> AV_OPT_SEARCH_CHILDREN);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot set output pixel
> format\n");
> goto end;
> }
> } else if (dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
> buffersrc = avfilter_get_by_name("abuffer");
> buffersink = avfilter_get_by_name("abuffersink");
> if (!buffersrc || !buffersink) {
> av_log(NULL, AV_LOG_ERROR, "filtering source or sink
> element not found\n");
> ret = AVERROR_UNKNOWN;
> goto end;
> }
>
> if (!dec_ctx->channel_layout)
> dec_ctx->channel_layout =
> av_get_default_channel_layout(dec_ctx->channels);
> snprintf(args, sizeof(args),
> "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:channel_layout=0x%"PRIx64,
> dec_ctx->time_base.num, dec_ctx->time_base.den,
> dec_ctx->sample_rate,
> av_get_sample_fmt_name(dec_ctx->sample_fmt),
> dec_ctx->channel_layout);
> ret = avfilter_graph_create_filter(&buffersrc_ctx,
> buffersrc, "in",
> args, NULL, filter_graph);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer
> source\n");
> goto end;
> }
>
> ret = avfilter_graph_create_filter(&buffersink_ctx,
> buffersink, "out",
> NULL, NULL, filter_graph);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot create audio buffer
> sink\n");
> goto end;
> }
>
> ret = av_opt_set_bin(buffersink_ctx, "sample_fmts",
> (uint8_t*)&enc_ctx->sample_fmt,
> sizeof(enc_ctx->sample_fmt),
> AV_OPT_SEARCH_CHILDREN);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot set output sample
> format\n");
> goto end;
> }
>
> ret = av_opt_set_bin(buffersink_ctx, "channel_layouts",
> (uint8_t*)&enc_ctx->channel_layout,
> sizeof(enc_ctx->channel_layout),
> AV_OPT_SEARCH_CHILDREN);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot set output channel
> layout\n");
> goto end;
> }
>
> ret = av_opt_set_bin(buffersink_ctx, "sample_rates",
> (uint8_t*)&enc_ctx->sample_rate,
> sizeof(enc_ctx->sample_rate),
> AV_OPT_SEARCH_CHILDREN);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Cannot set output sample
> rate\n");
> goto end;
> }
> } else {
> ret = AVERROR_UNKNOWN;
> goto end;
> }
>
> /* Endpoints for the filter graph. */
> outputs->name = av_strdup("in");
> outputs->filter_ctx = buffersrc_ctx;
> outputs->pad_idx = 0;
> outputs->next = NULL;
>
> inputs->name = av_strdup("out");
> inputs->filter_ctx = buffersink_ctx;
> inputs->pad_idx = 0;
> inputs->next = NULL;
>
> if (!outputs->name || !inputs->name) {
> ret = AVERROR(ENOMEM);
> goto end;
> }
>
> if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_spec,
> &inputs, &outputs, NULL)) < 0)
> goto end;
>
> if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
> goto end;
>
> /* Fill FilteringContext */
> fctx->buffersrc_ctx = buffersrc_ctx;
> fctx->buffersink_ctx = buffersink_ctx;
> fctx->filter_graph = filter_graph;
>
> end:
> avfilter_inout_free(&inputs);
> avfilter_inout_free(&outputs);
>
> return ret;
> }
>
> static int init_filters(void)
> {
> const char *filter_spec;
> unsigned int i;
> int ret;
> filter_ctx = av_malloc_array(ifmt_ctx->nb_streams,
> sizeof(*filter_ctx));
> if (!filter_ctx)
> return AVERROR(ENOMEM);
>
> for (i = 0; i < ifmt_ctx->nb_streams; i++) {
> filter_ctx[i].buffersrc_ctx = NULL;
> filter_ctx[i].buffersink_ctx = NULL;
> filter_ctx[i].filter_graph = NULL;
> if (!(ifmt_ctx->streams[i]->codec->codec_type ==
> AVMEDIA_TYPE_AUDIO
> || ifmt_ctx->streams[i]->codec->codec_type ==
> AVMEDIA_TYPE_VIDEO))
> continue;
>
>
> if (ifmt_ctx->streams[i]->codec->codec_type ==
> AVMEDIA_TYPE_VIDEO)
> filter_spec = "null"; /* passthrough (dummy) filter
> for video */
> else
> filter_spec = "anull"; /* passthrough (dummy) filter
> for audio */
> ret = init_filter(&filter_ctx[i], ifmt_ctx->streams[i]->codec,
> ofmt_ctx->streams[i]->codec, filter_spec);
> if (ret)
> return ret;
> }
> return 0;
> }
>
> static int encode_write_frame(AVFrame *filt_frame, unsigned int
> stream_index, int *got_frame) {
> int ret;
> int got_frame_local;
> AVPacket enc_pkt;
> int (*enc_func)(AVCodecContext *, AVPacket *, const AVFrame *,
> int *) =
> (ifmt_ctx->streams[stream_index]->codec->codec_type ==
> AVMEDIA_TYPE_VIDEO) ? avcodec_encode_video2 :
> avcodec_encode_audio2;
>
> if (!got_frame)
> got_frame = &got_frame_local;
>
> av_log(NULL, AV_LOG_INFO, "Encoding frame\n");
> /* encode filtered frame */
> enc_pkt.data = NULL;
> enc_pkt.size = 0;
> av_init_packet(&enc_pkt);
> ret = enc_func(ofmt_ctx->streams[stream_index]->codec, &enc_pkt,
> filt_frame, got_frame);
> av_frame_free(&filt_frame);
> if (ret < 0)
> return ret;
> if (!(*got_frame))
> return 0;
>
> /* prepare packet for muxing */
> enc_pkt.stream_index = stream_index;
> av_packet_rescale_ts(&enc_pkt,
> ofmt_ctx->streams[stream_index]->codec->time_base,
> ofmt_ctx->streams[stream_index]->time_base);
>
> av_log(NULL, AV_LOG_DEBUG, "Muxing frame\n");
> /* mux encoded frame */
> ret = av_interleaved_write_frame(ofmt_ctx, &enc_pkt);
> return ret;
> }
>
> static int filter_encode_write_frame(AVFrame *frame, unsigned int
> stream_index)
> {
> int ret;
> AVFrame *filt_frame;
>
> av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n");
> /* push the decoded frame into the filtergraph */
> ret =
> av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
> frame, 0);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Error while feeding the
> filtergraph\n");
> return ret;
> }
>
> /* pull filtered frames from the filtergraph */
> while (1) {
> filt_frame = av_frame_alloc();
> if (!filt_frame) {
> ret = AVERROR(ENOMEM);
> break;
> }
> av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from
> filters\n");
> ret =
> av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
> filt_frame);
> if (ret < 0) {
> /* if no more frames for output - returns AVERROR(EAGAIN)
> * if flushed and no more frames for output - returns
> AVERROR_EOF
> * rewrite retcode to 0 to show it as normal procedure
> completion
> */
> if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
> ret = 0;
> av_frame_free(&filt_frame);
> break;
> }
>
> filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
> ret = encode_write_frame(filt_frame, stream_index, NULL);
> if (ret < 0)
> break;
> }
>
> return ret;
> }
>
> static int flush_encoder(unsigned int stream_index)
> {
> int ret;
> int got_frame;
>
> if
> (!(ofmt_ctx->streams[stream_index]->codec->codec->capabilities &
> AV_CODEC_CAP_DELAY))
> return 0;
>
> while (1) {
> av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n",
> stream_index);
> ret = encode_write_frame(NULL, stream_index, &got_frame);
> if (ret < 0)
> break;
> if (!got_frame)
> return 0;
> }
> return ret;
> }
>
> int main(int argc, char **argv)
> {
> int ret;
> AVPacket packet = { .data = NULL, .size = 0 };
> AVFrame *frame = NULL;
> enum AVMediaType type;
> unsigned int stream_index;
> unsigned int i;
> int got_frame;
> int (*dec_func)(AVCodecContext *, AVFrame *, int *, const
> AVPacket *);
>
> if (argc != 3) {
> av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <output
> file>\n", argv[0]);
> return 1;
> }
>
> av_register_all();
> avfilter_register_all();
> avformat_network_init();
>
> if ((ret = open_input_file(argv[1])) < 0)
> goto end;
> if ((ret = open_output_file(argv[2])) < 0)
> goto end;
> if ((ret = init_filters()) < 0)
> goto end;
>
> /* read all packets */
> while (1) {
> if ((ret = av_read_frame(ifmt_ctx, &packet)) < 0)
> break;
> stream_index = packet.stream_index;
> type =
> ifmt_ctx->streams[packet.stream_index]->codec->codec_type;
> av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of
> stream_index %u\n",
> stream_index);
>
> if (filter_ctx[stream_index].filter_graph) {
> av_log(NULL, AV_LOG_DEBUG, "Going to reencode&filter
> the frame\n");
> frame = av_frame_alloc();
> if (!frame) {
> ret = AVERROR(ENOMEM);
> break;
> }
> av_packet_rescale_ts(&packet,
> ifmt_ctx->streams[stream_index]->time_base,
> ifmt_ctx->streams[stream_index]->codec->time_base);
> dec_func = (type == AVMEDIA_TYPE_VIDEO) ?
> avcodec_decode_video2 :
> avcodec_decode_audio4;
> ret = dec_func(ifmt_ctx->streams[stream_index]->codec,
> frame,
> &got_frame, &packet);
> if (ret < 0) {
> av_frame_free(&frame);
> av_log(NULL, AV_LOG_ERROR, "Decoding failed\n");
> break;
> }
>
> if (got_frame) {
> frame->pts =
> av_frame_get_best_effort_timestamp(frame);
> ret = filter_encode_write_frame(frame, stream_index);
> av_frame_free(&frame);
> if (ret < 0)
> goto end;
> } else {
> av_frame_free(&frame);
> }
> } else {
> /* remux this frame without reencoding */
> av_packet_rescale_ts(&packet,
> ifmt_ctx->streams[stream_index]->time_base,
> ofmt_ctx->streams[stream_index]->time_base);
>
> ret = av_interleaved_write_frame(ofmt_ctx, &packet);
> if (ret < 0)
> goto end;
> }
> av_packet_unref(&packet);
> }
>
> /* flush filters and encoders */
> for (i = 0; i < ifmt_ctx->nb_streams; i++) {
> /* flush filter */
> if (!filter_ctx[i].filter_graph)
> continue;
> ret = filter_encode_write_frame(NULL, i);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Flushing filter failed\n");
> goto end;
> }
>
> /* flush encoder */
> ret = flush_encoder(i);
> if (ret < 0) {
> av_log(NULL, AV_LOG_ERROR, "Flushing encoder failed\n");
> goto end;
> }
> }
>
> av_write_trailer(ofmt_ctx);
> end:
> av_packet_unref(&packet);
> av_frame_free(&frame);
> for (i = 0; i < ifmt_ctx->nb_streams; i++) {
> avcodec_close(ifmt_ctx->streams[i]->codec);
> if (ofmt_ctx && ofmt_ctx->nb_streams > i &&
> ofmt_ctx->streams[i] && ofmt_ctx->streams[i]->codec)
> avcodec_close(ofmt_ctx->streams[i]->codec);
> if (filter_ctx && filter_ctx[i].filter_graph)
> avfilter_graph_free(&filter_ctx[i].filter_graph);
> }
> av_free(filter_ctx);
> avformat_close_input(&ifmt_ctx);
> if (ofmt_ctx && !(ofmt_ctx->oformat->flags & AVFMT_NOFILE))
> avio_closep(&ofmt_ctx->pb);
> avformat_free_context(ofmt_ctx);
>
> if (ret < 0)
> av_log(NULL, AV_LOG_ERROR, "Error occurred: %s\n",
> av_err2str(ret));
>
> return ret ? 1 : 0;
> }/
>
> When we run this we are getting this error:
>
> / Input #0, rtsp, from 'rtsp://localhost:8554/live':
> Metadata:
> title : Unnamed
> comment : N/A
> Duration: N/A, start: 5294.642467, bitrate: N/A
> Stream #0:0: Video: h264 (Constrained Baseline), yuv420p,
> 640x480 [SAR 1:1 DAR 4:3], 30 fps, 30 tbr, 90k tbn, 60 tbc
> [libx264 @ 0xe87c80] Specified pixel format -1 is invalid or not
> supported
> Cannot open video encoder for stream #0
> codec : 28 and pix :12
> Error occurred: Invalid argument/
>
> But I could see that the correct pixel format macro
> "AV_PIX_FMT_YUV420P" is provided.
>
> Thanks
>
>
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
May I suggest to use instead, Red5 which can restream into an flv live
on the server. It requires this plugin
https://github.com/Red5/red5-rtsp-restreamer which was written for axis
cameras specifically and can be modified to suit.
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