On 15/06/15 09:39, Christoph Gerstbauer wrote: > >>> 1.) Please can you tell me YOUR used syntaxes for IMX30/40/50 for PAL >>> and NTSC? I want to compare it to mine. >> Mine look remarkably similar to yours except for the ommission of 'ilme' >> which makes no sense for an I frame only format. > > Maybe the ffmpeg documentation is not correct? > "ILME: Force interlacing support in encoder (MPEG-2 and MPEG-4 only). > Use this option if your input file is interlaced and you want to keep > the interlaced format for minimum losses. The alternative is to > deinterlace the input stream with-deinterlace, but deinterlacing > introduces losses." > > Our IMX50 source will be always interlaced. But what does ILME have > to to with Intra frame encoding (I-frame)? Does ILME only works for
Hmmm. the docs describe 'ilme' twice; in Section 11 (Codec Options) it simply states:- ‘ilme’ Apply interlaced motion estimation. For an I frame only format motion estimation is not applicable. So I would say that ilme has nothing to do with Intra frame encoding. > GOP structures in MPEG2 and MPEG4? If yes, this should be explained > in the documentation, I think. But it isnt. > Unless the flag performs some other undocumented fuction as well it ought to be redundant. -- Tim. Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83 _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
