find starting number for image sequences automatically

2019-02-26 10:58:55 -08:00
parent 8ba58acbc3
commit 1ae3b877a1
7 changed files with 54 additions and 13 deletions
@@ -781,12 +781,18 @@ void Cacher::OpenWorker() {
    const char* filename = ba.constData();
    const FootageStream* ms = clip->media_stream();

+    // for image sequences that don't start at 0, set the index where it does start
+    AVDictionary* format_opts = nullptr;
+    if (m->start_number > 0) {
+      av_dict_set(&format_opts, "start_number", QString::number(m->start_number).toUtf8(), 0);
+    }
+
    formatCtx = nullptr;
    int errCode = avformat_open_input(
          &formatCtx,
          filename,
          nullptr,
-          nullptr
+          &format_opts
          );
    if (errCode != 0) {
      char err[1024];