return ret;
}
}
+ if (ist && ist->dec->type == AVMEDIA_TYPE_SUBTITLE && ost->enc->type == AVMEDIA_TYPE_SUBTITLE) {
+ int input_props = 0, output_props = 0;
+ AVCodecDescriptor const *input_descriptor =
+ avcodec_descriptor_get(dec->codec_id);
+ AVCodecDescriptor const *output_descriptor =
+ avcodec_descriptor_get(ost->enc_ctx->codec_id);
+ if (input_descriptor)
+ input_props = input_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
+ if (output_descriptor)
+ output_props = output_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
+ if (input_props && output_props && input_props != output_props) {
+ snprintf(error, error_len,
+ "Subtitle encoding currently only possible from text to text "
+ "or bitmap to bitmap");
+ return AVERROR_INVALIDDATA;
+ }
+ }
if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
if (ret == AVERROR_EXPERIMENTAL)