On Tue, May 23, 2017 at 12:28:48 +0200, Stefano Sabatini wrote:
> - if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
> + if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO &&
> + s->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
> av_log(avctx, AV_LOG_ERROR,
> - "low delay forcing is only available for mpeg2\n");
> + "low delay forcing is only available for mpeg2, increase
> strict_std_compliance to force it\n");
Mathematically speaking, you need to decrease, not increase it (so that
it makes s->strict_std_compliance >= FF_COMPLIANCE_NORMAL false).
#define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to an older more
strict version of the spec or reference software.
#define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things
in the spec no matter what consequences.
#define FF_COMPLIANCE_NORMAL 0
#define FF_COMPLIANCE_UNOFFICIAL -1 ///< Allow unofficial extensions
#define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental
things.
The text is also confusing (while correct) in that you'll be "forcing
the forcing (of low delay)".
Perhaps something like:
"[...] set strict_std_compliance to 'unofficial' or lower in order to
allow it", or "enable it nevertheless". (I'm too lazy to check for
other wordings.)
Moritz
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