diff options
Diffstat (limited to 'fftools/ffmpeg_filter.c')
| -rw-r--r-- | fftools/ffmpeg_filter.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c index 0165be8f77..634315fa34 100644 --- a/fftools/ffmpeg_filter.c +++ b/fftools/ffmpeg_filter.c @@ -1623,6 +1623,33 @@ int fg_transcode_step(FilterGraph *graph, InputStream **best_ist) InputFilter *ifilter; InputStream *ist; + if (!graph->graph && ifilter_has_all_input_formats(graph)) { + // graph has not been configured yet, but everything is ready; + // this can happen for graphs with no inputs, or when some input + // EOF'ed with zero frames and fallback parameters were used + ret = configure_filtergraph(graph); + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n"); + return ret; + } + } + + if (!graph->graph) { + for (int i = 0; i < graph->nb_inputs; i++) { + InputFilter *ifilter = graph->inputs[i]; + if (!ifilter->ist->got_output && !input_files[ifilter->ist->file_index]->eof_reached) { + *best_ist = ifilter->ist; + return 0; + } + } + + // graph not configured, but all inputs are either initialized or EOF + for (int i = 0; i < graph->nb_outputs; i++) + graph->outputs[i]->ost->inputs_done = 1; + + return 0; + } + *best_ist = NULL; ret = avfilter_graph_request_oldest(graph->graph); if (ret >= 0) |