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I have an issue that has me stumped. I have written a program than creates a flash video container (H.264 video and AAC audio streams) and writes it to a URL. If the URL is a file it is and playable and uploadable with no issues. But if the URL is a RTMP then
it is stream but with buffering waits. But if the URL is pipe:1 passed to ffmpeg -i - -acodec copy -vcodec copy -f flv rtmp://a.rtmp.youtube.com/live2/<key> works just fine.</p>
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Here is the setup code:</p>
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<span style="mso-tab-count:1"> </span>int status=0;</p>
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<o:p> </o:p><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">//</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">
</span><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);">setup format context and io context</span></p>
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//<span style="mso-spacerun:yes"> </span>tried with and without avformat_network_init();</p>
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//<span style="mso-tab-count:1"> </span>avformat_network_init();</p>
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<span style="mso-tab-count:1"> </span>if ((status = avio_open(&io_ctx, filename, AVIO_FLAG_WRITE)))</p>
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<span style="mso-tab-count:2"> </span>{</p>
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<span style="mso-tab-count:2"> </span>fprintf(stderr, "Could not open output file '%s' (error '%s')\n", filename, av_err2str(status));</p>
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<span style="mso-tab-count:2"> </span>return -1;</p>
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<span style="mso-tab-count:2"> </span>}</p>
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<span style="mso-tab-count:1"> </span>avformat_alloc_output_context2(&flv_frmtctx, NULL, "flv", NULL);</p>
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<span style="mso-tab-count:1"> </span>if (!flv_frmtctx) </p>
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<span style="mso-tab-count:2"> </span>{</p>
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<span style="mso-tab-count:2"> </span>fprintf(stderr, "Could not allocate output format context\n");</p>
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<span style="mso-tab-count:2"> </span>return -1;</p>
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<span style="mso-tab-count:2"> </span>}</p>
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<span style="mso-tab-count:1"> </span>flv_frmtctx->pb = io_ctx;</p>
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<span style="mso-tab-count:1"> </span>if (!(flv_frmtctx->url = av_strdup(filename)))
</p>
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<span style="mso-tab-count:2"> </span>{</p>
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fprintf(stderr, "Could not copy url.\n");</p>
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<span style="mso-spacerun:yes"> </span><span style="mso-tab-count:2"> </span>return -1;</p>
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<span style="mso-tab-count:2"> </span>}</p>
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<o:p> </o:p></p>
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The I understand the FFMPEG command is just a passthru with just copy of both streams and no changes to either stream or container but it streams just fine.</p>
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So any ideas what I am doing wrong or missing in my code that is being done by FFMPEG?</p>
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<o:p> </o:p></p>
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<o:p> </o:p></p>
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