On Thursday, May 26, 2022, Andrew Randrianasulu <[email protected]> wrote:
On Thursday, May 26, 2022, Andrew Randrianasulu <[email protected]> wrote:
On Thursday, May 26, 2022, Andrew Randrianasulu <[email protected]> wrote:
On Thursday, May 26, 2022, Andrew Randrianasulu <[email protected]> wrote:
On Thursday, May 26, 2022, Phyllis Smith via Cin < [email protected]> wrote:
Checked these 2 into GIT after testing. About the following:
Instead "h264_vaapi.mkv" gives me error and no rendering.
Error message popup: "error rendering data"
On terminal: FFMPEG::encode_activate: write header failed /home/paz/vaapi_test.mkv err: Invalid data found when processing input Render::render_single: Session finished.
I added a message to the format to state that the mkv "only works on computer that has vaapi capable software and hardware". I got the same error message as Andrew on my AMD laptop that does not handle vaapi, but an old HP laptop has it working. Not exactly sure that is the correct reason but it is all I could think of. Correct me if I am wrong.
may be mkv muxer in ffmpeg more strict (or buggy)?
if you try to re-mux vaapi-encoded h264 mp4 into mkv with ffmpeg -i file.mp4 -c:v copy (..other params) file.mkv - does it work?
at least for some user it was not working in ~2020... may be AMD driver/firmware need some support?
ah, googling exact error showed up solution in this bug:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/2351
should be fixed if your mesa has commits from:
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4184/commits
but may be latest nesa reintroduced this bug...?
Also, you can try this bsf metadata option... (not sure how to use it yet)
https://www.ffmpeg.org/ffmpeg-bitstream-filters.html#toc-dump_005fextra
=== For example the following ffmpeg command forces a global header (thus disabling individual packet headers) in the H.264 packets generated by the libx264 encoder, but corrects them by adding the header stored in extradata to the key packets:
ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts
===
if modification of such command work for ffmpeg vaapi encoding and muxing into mkv on AMD hardware (!) we hopefully can add this to our newly-added profile?
It seems ffmpeg.C already supports adding bitstream filters at encoder side...
Successfully rebased and updated refs/heads/master. $ cd cinelerra/ $ grep av_bsf ffmpeg.C if( bsfc ) av_bsf_free(&bsfc); ret = av_bsf_send_packet(bsfc, pkt); if( (ret=av_bsf_receive_packet(bsfc, bs)) < 0 ) { ret = av_bsf_list_parse_str(bsfilter, &fst->bsfc); $ mcedit ffmpeg.C
---
you can look up av_bsf_list_parse_str documentation....
https://ffmpeg.org/doxygen/3.2/group__lavc__misc.html# gacc7bbd4bb41b36893f6ad971fd95f7fb
===
int av_bsf_list_parse_str ( const char * str, AVBSFContext ** bsf ) Parse string describing list of bitstream filters and create single AVBSFContext describing the whole chain of bitstream filters.
Resulting AVBSFContext can be treated as any other AVBSFContext freshly allocated by av_bsf_alloc().
Parameters str String describing chain of bitstream filters in format bsf1[=opt1=val1:opt2=val2][,bsf2]
[out] bsf Pointer to be set to newly created AVBSFContext structure representing the chain of bitstream filters Returns
=0 on success, negative AVERROR in case of failure
===
and try to have fun with h264_metadata (try rotation as example?) by modifying one from our h264 profiles (temporarily)
unfortunately cin on termux segfaults with this opt file: mp4 libx264 | h264_metadata=crop_left=20:crop_right=20 # use framerate for 1 keyframe/sec, needed for seeks keyint_min=25 x264-params keyint=25 Thread 113 "cin" received signal SIGSEGV, Segmentation fault. [Switching to LWP 18851] 0xf4511c30 in ?? () from /data/data/com.termux/files/usr/lib/libavcodec.so (gdb) bt full #0 0xf4511c30 in ?? () from /data/data/com.termux/files/usr/lib/libavcodec.so No symbol table info available. #1 0xf6eef496 in av_mallocz () from /data/data/com.termux/files/usr/lib/libavutil.so No symbol table info available. #2 0xe75f3140 in ?? () No symbol table info available. --- I hope it works better on desktop/with older integrated ffmpeg...