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-target option patch by (Vidar Madsen <vidar at prosalg dot no>)

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this isnt complete or bugfree but its better than nothing

Originally committed as revision 2472 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vidar Madsen 2003-11-03 17:28:44 +00:00 committed by Michael Niedermayer
parent 89b9441aba
commit e059574132
1 changed files with 106 additions and 0 deletions
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ffmpeg.c
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@ -2708,6 +2708,111 @@ void opt_intra_matrix(const char *arg)
parse_matrix_coeffs(intra_matrix, arg);
}
static void opt_target(const char *arg)
{
int norm = -1;
if(!strncmp(arg, "pal-", 4)) {
norm = 0;
arg += 4;
} else if(!strncmp(arg, "ntsc-", 5)) {
norm = 1;
arg += 5;
} else {
int fr;
/* Calculate FR via float to avoid int overflow */
fr = (int)(frame_rate * 1000.0 / frame_rate_base);
if(fr == 25000) {
norm = 0;
} else if((fr == 29970) || (fr == 23976)) {
norm = 1;
} else {
/* Try to determine PAL/NTSC by peeking in the input files */
if(nb_input_files) {
int i, j;
for(j = 0; j < nb_input_files; j++) {
for(i = 0; i < input_files[j]->nb_streams; i++) {
AVCodecContext *c = &input_files[j]->streams[i]->codec;
if(c->codec_type != CODEC_TYPE_VIDEO)
continue;
fr = c->frame_rate * 1000 / c->frame_rate_base;
if(fr == 25000) {
norm = 0;
break;
} else if((fr == 29970) || (fr == 23976)) {
norm = 1;
break;
}
}
if(norm >= 0)
break;
}
}
}
if(verbose && norm >= 0)
printf("Assuming %s for target.\n", norm ? "NTSC" : "PAL");
}
if(norm < 0) {
fprintf(stderr, "Could not determine norm (PAL/NTSC) for target.\n");
fprintf(stderr, "Please prefix target with \"pal-\" or \"ntsc-\",\n");
fprintf(stderr, "or set a framerate with \"-r xxx\".\n");
exit(1);
}
if(!strcmp(arg, "vcd")) {
opt_video_codec("mpeg1video");
opt_audio_codec("mp2");
opt_format("vcd");
opt_frame_size(norm ? "352x240" : "352x288");
video_bit_rate = 1150000;
video_rc_max_rate = 1150000;
video_rc_min_rate = 1150000;
audio_bit_rate = 224000;
audio_sample_rate = 44100;
} else if(!strcmp(arg, "svcd")) {
opt_video_codec("mpeg2video");
opt_audio_codec("mp2");
opt_format("vcd");
opt_frame_size(norm ? "480x480" : "480x576");
opt_gop_size(norm ? "18" : "15");
video_bit_rate = 2040000;
video_rc_max_rate = 2516000;
video_rc_min_rate = 1145000;
audio_bit_rate = 224000;
audio_sample_rate = 44100;
} else if(!strcmp(arg, "dvd")) {
opt_video_codec("mpeg2video");
opt_audio_codec("ac3");
opt_format("vob");
opt_frame_size(norm ? "720x480" : "720x576");
opt_gop_size(norm ? "18" : "15");
video_bit_rate = 6000000;
video_rc_max_rate = 9000000;
video_rc_min_rate = 1500000;
audio_bit_rate = 448000;
audio_sample_rate = 48000;
} else {
fprintf(stderr, "Unknown target: %s\n", arg);
exit(1);
}
}
const OptionDef options[] = {
/* main options */
{ "L", 0, {(void*)show_license}, "show license" },
@ -2733,6 +2838,7 @@ const OptionDef options[] = {
{ "re", OPT_BOOL | OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate", "" },
{ "loop", OPT_BOOL | OPT_EXPERT, {(void*)&loop_input}, "loop (current only works with images)" },
{ "v", HAS_ARG, {(void*)opt_verbose}, "control amount of logging", "verbose" },
{ "target", HAS_ARG, {(void*)opt_target}, "specify target file type (\"vcd\", \"svcd\" or \"dvd\")", "type" },
/* video options */
{ "b", HAS_ARG | OPT_VIDEO, {(void*)opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },